Alternatives to Skiff
Compare Skiff alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Skiff in 2026. Compare features, ratings, user reviews, pricing, and more from Skiff competitors and alternatives in order to make an informed decision for your business.
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1
Proton Drive
Proton AG
Proton Drive is the all-in-one workspace for storing sensitive data and collaborating with your teams, clients, and partners. Collaborate securely without compromising control: Share client files, contracts, and sensitive business documents with full end-to-end encryption. You control who can access what. Set passwords, add expiry dates, or revoke access anytime. Protect all your business data: Plans come with 1 TB of storage allowance per user, giving your team enough space for all their files and docs. You can always add more storage later if needed. Simplify compliance across industries: Proton Drive supports GDPR, HIPAA, NIS2, DORA, and ISO 27001 compliance out of the box, and has been successfully audited for SOC 2 Type II. There's no need for custom configurations or third-party tools, as this helps you meet regulatory standards with minimal effort. -
2
Proton Mail
Proton AG
Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your business data confidential and under your control. With Proton Mail and Calendar, your team can securely manage their inbox and schedule, while your organization maintains a professional presence with support for custom email domains and personalized branding. And with the Easy Switch tool, migrating from Google or Microsoft is seamless, no IT expertise required. -
3
Files.com
Files.com
Files.com is a cloud-native Managed File Transfer (MFT) platform that unifies file transfers, sharing, and automation across any cloud, protocol, or partner. It connects 50+ storage systems — including Amazon S3, Azure, Google Drive, SharePoint, Dropbox, and Box — presenting them as a single seamless namespace. Files.com supports SFTP, FTP/FTPS, AS2, HTTPS, WebDAV, and REST APIs, making it compatible with virtually any system or partner. Automated workflows eliminate manual scripts and reduce admin overhead by up to 90%. Enterprise-grade security includes AES-256 encryption, SOC 2 Type II certification, HIPAA/GDPR compliance, full audit trails, SSO (Okta, Azure AD, and more), and 2FA. With a 99.99% uptime history and zero data breaches in 15 years, Files.com is trusted by IT teams in finance, healthcare, and technology. Available via web, desktop (Windows/macOS), mobile (iOS/Android), and on-premises agent (Windows/macOS/Linux) -
4
Tresorit
Tresorit
End-to-end encrypted file sync & sharing Tresorit is the ultra-secure place in the cloud to store, sync and share files easily from anywhere, anytime. Tresorit is powered by end-to-end encryption, therefore it seals your files away from internal data breaches and hackers. All the data is securely stored according to the GDPR in Europe in Microsoft Azure datacenters. Manage who can add, edit or only view the data you shared. Team members can securely access the updated files using their browser, desktop, or mobile device, wherever they are. Files can be shared with the same secure manners outside your company as well. Replace risky email attachments with ultra-secure share links. Thanks to end-to-end encryption, nothing leaves your device unencrypted, meaning only you and your recipient can open the files. Utilize the new Content Shield features for your Business to secure collaboration with external parties. Read more here: https://tresorit.com/tresorit-content-shieldStarting Price: $10.42/month -
5
PrivMX
PrivMX
PrivMX Fusion is privacy-by-design, all-in-one collaboration software for all kinds of teams, protecting all data with zero-knowledge encryption. With a Fusion of Tools integrated within one digital workspace, it helps teams in organising and managing daily tasks, files and communication in a fresh new way, making it easier to look at projects from various angels. It includes: * group, private an thematic communication within Chat channels; * video calls in private, ad hoc and thematic channels; * async communication with video and audio messages; * easy task management with to-do lists and Kanban boards; * private data storage with smart access policy; * buit-in editor for end-to-end encrypted text notes, mind maps and spreadsheets; * clear 2-dimensional UI architecture; * zero-knowledge encryption of all the content created, uploaded, stored and shared by the team - no third party can access your data; * GDPR compliance within the network of EU-located servers.Starting Price: €4 user per month -
6
Tuta
Tuta
Tuta offers a highly secure, encrypted email, calendar, and contacts service designed to give users complete control over their data. With end-to-end encryption powered by quantum-safe cryptography, Tuta ensures that all your communications are private and safe from surveillance. The platform is easy to use, supports mobile apps for Android and iOS, and is ad-free, offering a seamless experience across multiple devices. Tuta is committed to using renewable energy to power its servers, ensuring privacy while contributing to a greener future.Starting Price: €1.20 per month -
7
Open Web Systems
Open Web Systems
We will never sell your data to anyone else. Secure your data with powerful file access control, multi-layer encryption, machine-learning based authentication protection and advanced ransomware recovery. Enjoy constant improvements from a thriving and transparent, entirely open-source community development model, free from lockins, paywalls, advertising and covert surveillance. Open Web Systems is a collaboration between The Open Co-op and Collective Tools and is governed by its members as a cooperative. Together we are building the regenerative, commons economy. Your personal, customisable, welcome screen where you can place quick links to your most important tools and resources – and search across all of your files and applications at the same time. Create documents and spreadsheets and collaborate with others via desktop, mobile and web. Find files with powerful search, share your thoughts in comments or lock files until you are done with them.Starting Price: $4.94 per month -
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Atomic Mail
Atomic Mail
Atomic Mail is a secure and user-centric email hosting provider, dedicated to offering privacy-first email services. With features such as alias creation, robust security measures, and seamless account recovery, AtomicMail ensures your email experience is both private and hassle-free. Creation of Aliases (Hide-my-email): Maintain your privacy by creating multiple email aliases; Spam Free, No Ads; Email Password Protection; End-to-End Encryption: only you and your intended recipient can read the message; Zero Access Encryption: Atomic Mail cannot access your emails; Account Recovery with Seed Phrase: Recover access to your account with a unique seed phrase. Can regain control of your email account without compromising security.Starting Price: $0 -
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Letterbox
Letterbox
Who reads your mails? With regular mails you, the receiver, all mail providers and maybe others can read them. With end-to-end encrypted mails only the sender and the receivers can read them. Our iOS-App Letterbox makes end-to-end encryption easy to use, is compatible with most mail providers and supports the standard encryption protocol OpenPGP. Letterbox is similar to common mail apps but indicates the security state of incoming and outgoing mails. We disinguish between a confidential and insecure mails. Letterbox is a free open-source mail client on iOS and part of an ongoing research project at the Freie Universität Berlin, Germany. Letterbox is still under development but you can soon use the app on your device with Apple's TestFlight app.Starting Price: Free -
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Lavabit
Lavabit
Secure email for the world. Because everyone has the right to communicate privately. Flow is the most secure email solution for traditional email—compatible with most email clients. Volcano—our free, open source mail client—takes full advantage of the Dark Internet Mail Environment. Magma is our open source server for the Dark Internet Mail Environment—perfect if you need to host your own secure email. We're pioneers in encrypted email who believe all people have the right to private and secure communication. By establishing secure, end-to-end encryption standards and technologies, we're revolutionizing how the world communicates and protects its digital privacy. -
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RMail
RPost
RMail® is the e-security platform by RPost®, a global leader since 2000. RMail specializes in elegantly easy to use email encryption for privacy and compliance, e-signatures, legal e-delivery proof, secure file sharing, email impostor protection, document rights management, and AI-infused services to prevent data leaks and human e-security errors. RMail’s transmission e-security services are most often used by businesspeople or business systems that send important, sensitive, or consumer-regulated information. These RMail services are generally applied to those messages where the sender needs functionality beyond standard email in terms of (a) easier to use and more automated email encryption for privacy compliance, (b) returning a verifiable proof record of who said what to whom by email, (c) assurance and peace of mind related to delivery and open status of important and time-deadline email, (d) need a timestamped proof of content delivered, (f) need to share large files securely.Starting Price: $7/month/user -
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MsgSafe.io
MsgSafe.io
Instantly create as many email addresses as you need - each associated with their own group of contacts. Share addresses with anyone, but keep your real email address private. Stop telecom companies, governments, and hackers from seeing with whom you communicate. Each virtual mailbox is automatically set up with 4096-bit GPG and S/MIME encryption keys and certificates. All email stored at MsgSafe-io is encrypted. You can manage the encryption profile for each contact you communicate with. Protect your entire family or organization by managing all identities and email addresses with the domain you already own. If you don’t own a domain, you can use our domain registration services to purchase a domain integrated with MsgSafe-io and privacy protection. You don’t trust FaceTime, Skype, Duo, Hangouts and similar services hosted by companies like Apple, Microsoft and Google? Try our secure and private audio and video services. You can invite people to call you from a browser link.Starting Price: $5 per month -
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Cubbit for Teams
Cubbit
Cubbit for Teams is a SaaS distributed cloud storage that provides businesses with complete security. Thanks to the distributed zero-knowledge network, not even the service provider can access the uploaded files, meaning Cubbit goes beyond the facade of regulatory compliance. Cubbit for Teams reimagines the concept of security by providing an easy-to-use platform: zero-knowledge and end-to-end encryption protects the user as he saves, syncs and shares its data. Information can be accessed from anywhere at any time through the web-app, while employee permissions are managed with the click of a button. Files are shared with no size limit and unsecured email is replaced by Cubbit Private Links: a 100% secure sharing method that matches an encryption key to the folder. Relying on a distributed architecture instead of traditional data-centers allows Cubbit to be cost-effective and provide a significantly cheaper service than the competition. Plus, you will save CO2 per file stored.Starting Price: €6 per user, per month -
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SendSafely
SendSafely
The end-to-end encryption platform for modern business. SendSafely lets you easily exchange encrypted files and information with anyone on any device. Let us take the headache out of secure file exchange. Trusted by leading brands that understand the importance of keeping customer information safe. SendSafely works natively with all major browsers. No software to install, no encryption keys to manage. Use SendSafely for compliance with regulations like HIPAA (BAA available), GDPR, CCPA and more. Use one of our pre-built platform connectors or easily create your own integration with our developer API. Features designed for businesses such as user administration, single sign on and custom branding. SendSafely integrates with many popular third party systems, adding end-to-end encryption to the platforms your users already know and love. Extend the capabilities of your existing apps and infrastructure by seamlessly adding encryption to your existing workflows.Starting Price: $11.50/user/month -
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NordLocker
Nord Security
Leading-edge encryption at your fingertips. We use the most advanced ciphers and principles, featuring Argon2, AES256, ECC (with XChaCha20, EdDSA and Poly1305), and other creations of modern cryptography to guarantee ultimate security of your files. Think of all the personal files you’d rather keep private. Prevent them from ending up in the wrong hands and being exploited in malicious ways. Finances, IDs, passwords. Getting this info compromised may lead to identity theft or loss of money. NordLocker ensures top-notch security for your sensitive data. Whether it’s your diary or a secret music collection, NordLocker protects it from prying eyes so you don’t have to worry about someone trying to snoop on you. Use NordLocker to ensure secure file access and make your professionalism shine when sharing your work with clients.Starting Price: $1.49 per month -
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Mailprotector
Mailprotector
Mailprotector delivers award-winning email experiences exclusively through our amazing partner resellers. Easy to use encrypted email with no plugins or apps. Bracket has turned using email encryption from dread to delight. Just wrap brackets around the [subject] in any email client on any device, and Bracket handles the rest. Total email security that filters all the junk people don’t want. CloudFilter delivers full-stack protection from annoying spam and crippling email-based virus and phishing attacks in a way that’s effective, efficient, and easy to use. Prevents spam proliferation and keeps damaging or sensitive data from being leaked via email. SafeSend expands beyond CloudFilter’s outbound filtering by giving greater control over outbound email traffic with custom content rules and more. -
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CounterMail
CounterMail
CounterMail is a secure and easy to use online email service, designed to provide maximum security and privacy without any unnecessary complexity. You can access your email account at any time, from anywhere in the world. Your account will always be encrypted and anonymous. CounterMail's encryption works automatically and transparently, it requires no specialized computer skills or knowledge. If you are comfortable using services like Hotmail or Gmail, you will be comfortable using CounterMail's secure email! We are using a strong encryption protocol called OpenPGP, with 4096 bits encryption keys to protect your data. To the best of publicly available information, there is no known method which will allow a person or group to break OpenPGP:s encryption by cryptographic or computational means. -
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SalaX Secure Mail is an easy-to-use and highly secure email encryption solution that can be embedded in your existing email services to protect confidential email communications. Verify all users (senders and recipients alike) with various authentication methods (including strong authentication bank ID, SMS OTP, mail OTP, and password). Ensure security with monitoring features, like audit trails and various reporting options. Protect your communications with end-to-end encryption, all the way from sender to recipient. Secure Mail supports various email security protocols (DMARC, DKIM, SPF) as well as S/MIME-based encryption. You are in control of your data, flexible deployment is possible in the cloud or on-premises. Secure Mail also offers multiple configuration options (APIs, web interfaces). Classify confidential data and adjust security levels according to your policies. Stay compliant with data privacy laws and regulations (e.g. GDPR) thanks to government-grade security.
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MailHippo
MailHippo
HIPAA compliant email made easy and affordable. MailHippo is the easiest way to securely send and receive sensitive information and attachments by email. There's no setup or configuration required. Just sign up and start sending and receiving HIPAA-compliant emails right away. End-to-end encryption means your sensitive emails and attachments are always secure, both in transit and at rest. MailHippo works with your current email address, and with any email provider. MailHippo looks and works great on any smartphone or tablet. Get a unique link that empowers you to receive totally-secure emails from anyone. Get our HIPAA-compliant email platform with secure encrypted email messaging for FREE during our limited-time Beta program!Starting Price: $4.95 per month -
20
Kolab Now
Apheleia IT AG
Secure and private email, calendars and more. 100% Free & Open Source Software (FOSS). Open standards and formats used for all storage and communication. No vendor lock-in. All data stored under Swiss jurisdiction. User data never transmitted to any third party without explicit consent. GDPR, HIPAA and PCI compliant. Built secure from the ground up. Supports perfect forward secrecy (PFS). End-to-end encryption available. No back doors. Our documentation contains answers to most frequently asked questions and much more. Are you looking for an instant answer to your question or a quick solution for your problem, our Knowledgebase is where you will likely find it. If you can’t find the answer in our documentation, you can always contact support.Starting Price: $9.90 per month -
21
Ente Auth
Ente
Ente Auth is a free, open-source two-factor authentication app that helps users generate and manage time-based one-time passwords to secure logins for online accounts with an extra layer of verification beyond just a password, offering end-to-end encrypted backups so you never lose your codes and they remain private even to the service itself. It syncs codes across mobile, desktop, and web clients using fully encrypted channels, lets users import existing 2FA tokens by scanning QR codes or manual entry, and provides features like offline code generation, tagging and searching of codes, pinning favorites, icon identification, and quick “next code” display for faster logins. Backups are encrypted with audited cryptography, giving users peace of mind that only they can decrypt and access their 2FA secrets, and codes can be shared securely with teammates via encrypted links with optional expirations.Starting Price: Free -
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Mailfence
Mailfence
Mailfence is an encrypted email service that offers OpenPGP based end-to-end encryption and digital signatures. Mailfence comes with a plethora of features that boost collaboration without compromising security and convenience. Mailfence documents allow you to safely store and edit documents, you can also share docs with your team with the push of a button. Mailfence calendar will keep your tasks, meetings, and events all in one secure place. Mailfence contacts will store your contacts and it will give you the ability to create mailing lists to maximize efficiency. We designed Mailfence to be a fully interoperable suite, which means you can synchronize Mailfence with most services out there. Mailfence business offers fully customizable whitelabel versions of the Mailfence interface. To put the cherry on top, Mailfence donates 15% of revenues of PRO subscriptions to IFF and EDRI to bolster the fight for Online privacy.Starting Price: $2.50/month/user -
23
IceIT
Quantum Knight
IceIT is an always-free desktop utility for encrypting files quickly and easily using quantum-strength encryption. In addition to the community edition, IceIT includes available commercial upgrades for creating always-on sharing and private networks that allow securing files and folders across multiple users and groups, without the need for a centralized cloud account. IceIT frees you to confidently use your email, text message, and legacy communication mediums without worry. Got backups that you want to protect? Just IceIT!Starting Price: $0 -
24
Proton Calendar
Proton AG
Your calendar is a record of your life. Proton Calendar helps keep it private. Proton Calendar automatically secures all your events with end-to-end encryption. Events received from people who use other calendars are secured with zero-knowledge encryption. In both cases, event details, including the title, description, location, and people invited, are encrypted so not even we can see them. Proton Calendar makes staying on top of your schedule simple while keeping your information secure. Proton Calendar was built by the team behind Proton Mail, the world’s largest encrypted email service. Over 50 million people and some of the world’s largest organizations have signed up with Proton. Proton Calendar comes with a Proton Mail email address that you can use to securely send event invites. You can also add events to Proton Calendar directly from your Proton Mail inbox.Starting Price: Free -
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PBHS SecureMail
PBHS
Achieve and maintain data privacy compliance. PBHS Secure Mail is a mature HIPAA encrypted messaging solution for doctors, dentists, hospitals and other healthcare providers. Compliancy made easy! There is no software to install, configure or maintain. PBHS Secure Mail works on any device, from any location. It’s simple to share. Documents, Radiographs, CT Scans, and Messages are organized and available to all colleagues working on a case. Account initiation is as simple as logging in with your ADA Membership ID. Our optional Outlook Plug-in enables users to send and receive messages directly via Microsoft Outlook on your PC. Treatment Letters and private communications that are delivered from your practice management software to Outlook are now encrypted. Radiographs that are delivered from your digital x-ray systems to Outlook are now encrypted. No need to change how you email your colleagues and patients. Continue to use Outlook without violating HIPAA.Starting Price: $10 per month per account -
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Mimecast Advanced Email Security
Mimecast
Mimecast Advanced Email Security is a robust solution designed to protect organizations from a wide range of email-based threats, including phishing, malware, impersonation attacks, and spam. Leveraging cutting-edge AI and machine learning, Mimecast provides real-time threat detection and prevention to safeguard sensitive information and ensure business continuity. It offers advanced filtering and scanning of incoming and outgoing emails, reducing the risk of data breaches, and helps organizations comply with regulatory requirements. With comprehensive reporting and management tools, Mimecast enables IT teams to efficiently monitor and respond to potential threats, making it a trusted choice for businesses seeking enhanced email security. -
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SalaX Secure Collaboration is an all-in-one solution that makes it easy to encrypt emails, messages, chat rooms, and audio/video communications for privacy, compliance, and record-keeping. It includes SalaX Secure Messaging and SalaX Secure Mail, providing secure channels for sharing confidential, restricted, or secret information. Developed with a security-first mindset, SalaX Secure Collaboration offers full audit trails and flexible deployment options, allowing organizations to maintain control over their data. Encrypted video conferencing, files and file sharing, calls, and messages. We secure all your critical communications. Meet data sovereignty requirements with public cloud, private cloud, or on-premises deployments. Send messages without leaving a trace on public servers. Control your own encryption keys. Regular email or chat services allow attachments with up to 30MB of data to be sent. With our solution, the limit is 1GB.
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Spike
Spike
Spike brings your entire workspace into your Inbox: email, chat, calendar, calls, team collaboration, tasks — to one powerful Inbox. Everything you need to get your work done is in a single feed, so you can finally give the app-switching a rest. Spike’s conversational email fuses traditional email with instant messaging — eliminating cluttered email threads. With real-time conversations and live collaboration, have better interactions and a more human communication experience. Spike is available on iOS, Android, Mac, Windows & Web.Starting Price: Free -
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Cryptshare
Cryptshare
Cryptshare is innovation to protect your information when most at risk. We all need to send messages and data in our daily business. However, we face many limitations, as soon as data is in transit: 1. Protection of data 2. File size limitations Our solution solves these in a very effective and user-friendly way. It brings many other benefits including: *Detailed audit trail *Compliance with central data protection regulations *Great potential for automating business communication *It is also inexpensive, easy to implement, and accessible from any kind of device with a browser. Cryptshare complies with ISO 27001 and GDPR. Cryptshare keeps your information secure all the way.Starting Price: €5 per user per month -
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Canary Mail
Canary Mail
Email, meet AI. Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!Starting Price: $20/month -
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ZixMail
Zix Corporation
ZixMail is the desktop email encryption solution that provides individuals with a high level of security in their email communications. It's an easy-to-use service that lets users encrypt and decrypt emails and attachments with a single click. Trusted by key figures in Government, Financial, Healthcare, and Legal fields, ZixMail is a unique Email Encryption application that differentiates itself from other solutions by focusing on both the sender and receiver experience. Combining best-in-class encryption technologies with easy to use interfaces, ZixMail is the perfect fit for your organization's email security needs. -
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gpg4o
Giegerich & Partner
Preserve the privacy of your electronic correspondence. Send confidential email in Microsoft® Outlook® 2010/2013/2016 safely once and for all with gpg4o®, developed by Giegerich & Partner, based on OpenPGP, one of the most widely used and safest cryptographic techniques worldwide. gpg4o® is suitable both for private and enterprise use. gpg4o® by Giegerich & Partner guarantees the privacy of your electronic correspondence by mail encryption. gpg4o® enables the integration of one of the most widely used and safest email encryption systems into Microsoft® Outlook® 2010, Microsoft® Outlook® 2013, Microfost Outlook 2016 and for Microsoft® Outlook® 2019. Easy installation and an intuitive user experience help you preserve the privacy of your email. With the gpg4o® product maintenance, you will always get the latest features for more security and even better user experience.Starting Price: $93 one-time payment -
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StartMail
StartMail
StartMail is a secure, private email provider designed to protect your privacy. With StartMail, you can create disposable email addresses anytime, keeping your real inbox safe from spam. We believe privacy is a fundamental human right, and we’ve made it simple for you to protect yours. Even when your recipient doesn’t use encryption, you can still send password-protected messages with just one click. Our service complies with Dutch privacy laws—some of the strictest in the world—and adheres to European privacy standards. For professionals, StartMail also provides the option to secure your own domain with custom email addresses. No software downloads or installations are required; our easy setup gets you up and running in minutes.Starting Price: $35.93 per year -
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Hushmail
Hushmail
Hushmail protects your clients by adding encryption to your emails, web forms and e-signatures. It’s secure, HIPAA-compliant, and trusted by healthcare professionals worldwide. Best of all, Hushmail is easy to set up and use. Send your first encrypted email today, and set up a secure online intake form in minutes. Your Hushmail account works just like a regular email account, with added security features to help keep your data safe. Send and receive encrypted email on the web and iPhone. Access your account using Outlook, Apple Mail or your Android smartphone. Move your forms online in minutes. Hush™ Secure Forms is our secure alternative to old-fashioned paper forms and includes online signing for your most important digital forms. Switching from pen and ink to e-signatures has never been easier.Starting Price: $9.99/month/user -
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Z1 SecureMail Gateway
Zertificon
25% of the 100 German companies with the highest turnover choose Zertificon. Z1 SecureMail Gateway is our highly automated Enterprise Email Encryption solution for effortless, secure communications with anyone, anywhere. Your entire organization encrypts and decrypts, just as well manages & verifies email signatures smoothly in the background. Z1 SecureMail Gateway requires minimal maintenance. And the browser-based admin interface needs no special skills. Keys are managed automatically & central policies enforce security. Integration is fast into your Cloud or On-premises email infrastructure. Your workflows and business are uninterrupted — no employee training needed plus frictionless experience for recipients. With Z1 SecureMail Gateway, encryption is centrally configurable and proofed against human error. You easily achieve and maintain compliance and the highest security standards. You also own all encryption keys and attain German-engineered data sovereignty with no backdoors.Starting Price: from $ 1.50 per user/per month -
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Developermail
Developermail
You should be in full control over your mailbox. Developermail provides mailboxes that can be configured as if they were self-hosted. Including things like forwards, aliases, catchalls and sieve filters. So start thinking about optimizing your mailbox and forget about time consuming server adminstration. Every mailbox comes with calendars, an address book and reminders. Developermail integrates perfectly into your daily developer life. All configuration is done in YAML files which are stored in your private git repository on our servers. Simply "git clone" and "git push" to update configration settings. We value security and privacy like you do. Developermail uses battle tested encryption technologies in order to keep your data safe. We will never sell your private data nor share it with third-parties for marketing purposes. -
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Internxt
Internxt
Internxt is a secure cloud storage company committed to redefining how individuals and businesses manage their data. With a strong focus on security, privacy, and innovation, Internxt offers a range of innovative and safe storage solutions designed to empower users with flexible and user-friendly data management tools. Our open-source, end-to-end encrypted, zero-knowledge cloud storage services and a commitment to user privacy make Internxt a trusted partner for safeguarding digital assets. We pride ourselves on delivering top-quality products and services, prioritizing data security and accessibility. With a global presence and a dedication to excellence, Internxt is at the forefront of the digital data revolution, providing reliable and innovative solutions for the modern age. Internxt Drive offers up to 1GB of free storage space with up to 10TB of paid monthly, annual, or lifetime plans.Starting Price: €4.99 per month -
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Tuta Calendar
Tuta
Tuta Calendar is a zero-knowledge calendar with quantum-safe encryption, ensuring that all your events are protected from snooping and prying eyes. Whether you schedule events, receive event invitations, or share your calendar with others, all steps in the Tuta Calendar are automatically encrypted end-to-end. This means your data belongs to you, and no one else can access it. The intuitive, clean design allows for easy organization of appointments, business meetings, and repeating tasks. Push notifications are sent securely, so no third party can track you. Two-factor authentication can be enabled to protect your login credentials from malicious attacks. Tuta Calendar is available with free and open source desktop clients. You can share calendars and events with your family, organization, or company with a few taps.Starting Price: €3 per month -
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Mailock
Beyond Encryption
Mailock secure email empowers companies to exchange sensitive information with customers, without risking their data. It combines award-winning encryption technology with multi-factor identity authentication to protect confidential emails from cyber risk and keep customer information protected. Compose a secure email from your desktop, browser, or use rules and keywords to initiate the encryption. Set authentication challenges to verify your recipients’ identity so only the right people gain access. Keep audit trails for every message and track your recipients’ activity with real-time read notifications. Recipients can encrypt their replies for free. Empower your customers with a secure thread to your business. Deliver confidential documents to your customers at high volume with automated secure email delivery.Starting Price: $9.30 per user per month -
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Posteo
Posteo
Posteo is a secure and sustainable email service based in Berlin that focuses on privacy and environmental responsibility. With 100% green energy powering their operations, Posteo offers ad-free email accounts that are built to ensure user data remains private. It provides features like email encryption, calendar syncing, and an address book, all accessible from multiple devices. The service prides itself on not collecting personal data, protecting user identity, and offering a simple and intuitive user experience for just €1 per month. -
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Echoworx
Echoworx
Echoworx is a fully managed, cloud-based SaaS email encryption solution trusted by businesses worldwide. It offers 8 secure delivery methods, supports 28 languages, and features 9 authentication options, enabling secure communication anywhere, on any device. Key Features: • Multiple Secure Delivery Methods: Web Portal, S/MIME, PGP, Secure PDF, Certificate Encryption, Secure Attachment (PDF, Office, ZIP), TLS with fallback • Free Proof of Concept (POC): Experience full functionality with a risk-free trial • 24/7 Technical Support • Extensive Branding Options • Message Tracking & Recall • End-to-End Deployment: Seamless integration and setup across platforms • Advanced Authentication: Full OAuth Access, Self-Registration, SMS, Shared Secret Passphrase, SSO, System-Generated Verification Codes, Passwordless, and Multi-Factor Authentication (MFA) • Accessibility by Design • Self-Service Account Management -
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FortKnoxster
FortKnoxster
One-stop E2E encrypted platform made by cybersecurity experts. Crypto Suite™ is all you need in the jungle of crypto apps. The safest app available for all your crypto needs. All your valuable and private stuff in one secure place. Communications, cryptocurrencies and private files. End-to-end encryption and blockchain integration to ensure that only you are in control. We make it easy to handle your crypto. FortKnoxster is a true one-stop secure platform. Easy to share crypto and easy to invite your friends and contacts. The wallet in FortKnoxster is entirely non-custodial – only you have access to your funds. We don't have access - or anybody else. Only you hold the private encryption keys to your funds. Store all your coins and tokens in a single, secure mobile wallet. We support multiple blockchains and thousands of assets. BTC, ETH, FKX, ERC20, BEP20, NFT collectibles and other assets totally on your terms. -
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OpenText Core Email Message Privacy
OpenText
OpenText Core Email Message Privacy enables organizations to securely send emails and attachments, up to 100 GB per message, through a browser or Outlook without relying on insecure cloud-sharing tools. It uses AES-256 encryption at rest, and messages are uploaded to a secure portal; as the sender, you can set and manage permissions such as view, reply, and forward, even revoking rights after delivery. Recipients receive a secure link and can access messages via web or mobile without installing extra software. It includes built-in e-signature support, allowing recipients to add legally binding signatures directly within the secure message flow. Every interaction, delivery, opening, download, and signature is tracked in real time and logged for full auditability. It supports large file transfers while avoiding infrastructure complexity; it’s SaaS-based, requires no extra servers, and integrates with single sign-on (SSO). -
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ZevaCrypt
ZevaCrypt
Increase return on investment of existing PIV infrastructure for cross-agency encryption through ZevaCrypt™ intuitive and true end-to-end encryption solution. Email communication over secure channels has always been one of the most difficult-to-solve security challenges, especially those struggling to enforce the use of high assurance credentials such as PIV and CAC. Meanwhile, email is our primary form of communication for both sensitive and non-sensitive information. While encrypting within the same organization is simple, email encryption across organizational boundaries is challenging and often manual. Existing PKI encryption systems don’t ensure the required level of protection, and currently none of the encryption systems validate certificate policies the way they were designed to be used. In general, strong encryption must combine strong identity with strong cryptography. PKI encryption is the only means of achieving this intersection of goals.Starting Price: $9.90 per month -
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Document GPS
ShelterZoom
The only platform for tokenizing your digital files from inside your email account. Protect documents, videos, audio files, and more in one click. Digital content ownership and control are now easier than ever. End-to-end encryption without changing email attachment workflow. Control who can download, share, and view your attachments. Track who has downloaded, shared, or viewed your attachments in real time. Effortlessly manage, track, and monitor your email attachments in one library. Send clients a secure link to enable them to exchange files with you securely. Block your device screen to prevent unauthorized screenshots and copying. Unlimited e-sign directly in your email, providing unprecedented convenience and security. Prevents data breaches, ransomware, wire fraud, and more. End-to-end protection from desktop to mobile to external devices. Originator-controlled, always know who created the files and IP.Starting Price: $5 per month -
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black.com
black.com
Encrypted email hosting service. Emails are zero-access encrypted (AES-GCM-256 with RSA-OAEP-4096 key sharing) with a password-derived key, which means that not even we can access the contents of your emails at rest. Our system encrypts subjects, headers, message contents, attachments, email drafts and push notifications. Unparalleled commitment to data security with our Austrian-based company, leveraging Swiss-based infrastructure. In a landscape dominated by US tech providers, we utilize the world's most robust privacy protection laws. You start with 25 GB and get 2 GB of additional storage every year - forever. With normal usage, you will never run out of space. -
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ownCloud
ownCloud
ownCloud develops and provides open-source software for content collaboration, allowing teams to easily share and work on files seamlessly regardless of device or location. More than 100 million users worldwide already use ownCloud as an alternative to public clouds – and thereby opt for more digital sovereignty, security and data protection.Starting Price: 1.63€/user/month -
48
Despite the rise in text messaging, instant messaging, and social networking, email continues to be the predominant business collaboration tool. The unsecured nature of email, however, exposes sensitive information to malicious attacks. The Cisco Secure Email Encryption Service (formerly Cisco Registered Envelope Service) provides enhanced security and reliable controls for traditional email tools. It is fully integrated into most common email technologies and into a user's daily email routine. Encryption is triggered by policy or by data loss prevention tools. Cisco Secure Email creates an encryption key then wraps the email in an HTML envelope and delivers it to the recipient. When Envelope Storage is enabled, the key and message are stored temporarily in the Secure Email Encryption Service. The recipient clicks on the link to open the message on any device. Secure Email Encryption Service is based on technology that uses the most reliable email encryption algorithms available.
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49
Aurora Files
Afterlogic Corp
Your files in your cloud on your rules. Aurora Files is an open-source file storage platform for small teams and personal users. Self-hosted on your infrastructure, you stay in control over your data. Share files and folders with your teammates. As a backend, can use server's local or remote S3-compatible storage. Access your data with any WebDAV client, including the standard Windows Explorer. Rebrand Aurora Files with your colors, styles and images (including mobile apps). Access your files from any device, iOS or Android. Enables two-way sync of a user's local folders and the cloud, for both personal and corporate storage. Enable access to folders and files for everyone with the link. Handy for developers, makes it easier to customize code, perform integration with other systems, create and maintain your plugins. Aurora Files includes Paranoid Encryption module which provides strong AES-256 browser-based encryption.Starting Price: $499 per year -
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EncryptTitan
TitanHQ
EncryptTitan is a 100% cloud based encryption system for MSPs & Enterprises that allows users to exchange information securely via email. EncryptTitan provides organizations with the tools needed to adhere to state and federal privacy regulations while protecting their organization. EncryptTitan has pre-built DLP policies and settings that will look for regular content in the message body or attachment to automatically encrypt messages. Meet compliance requirements for protecting sensitive, private information. Providing data breach protection and avoiding costly fines and penalties. The outlook plug in can be used with our keyword encryption deployment, where the user can select which emails to be encrypted for the add in. EncryptTitan helps the safeguarding of private information & avoidance of litigation & bad press which can impact customer trust. Book your demo today and learn more about EncryptTitan.
