Alternatives to Microsoft Outlook
Compare Microsoft Outlook alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Microsoft Outlook in 2026. Compare features, ratings, user reviews, pricing, and more from Microsoft Outlook competitors and alternatives in order to make an informed decision for your business.
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1
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. -
2
ToogleBox
ToogleBox
A secured platform helping Super Admins, IT Managers, Marketing Managers, and HR Managers automate, secure, and manage Google Workspace functionalities. Running natively on GCP, our modular suite bridges the gap between standard Google functionalities and enterprise governance. ToogleBox Core Capabilities: 1. Email Damage Control: Execute domain-wide queries to bulk-delete malicious phishing emails in real-time or recall internal mistakes. 2. User Directory Management: Centrally control your employees' data, corporate email signatures, vacation responders, and shared calendars. 3. Contacts & Groups: Use attribute-based automation to create and update distribution lists. Delete obsolete internal contacts and manage shared contacts. 4. InfoBox: Targeted corporate information management for your entire organization's ecosystem. Integrates via Google Workspace Marketplace APIs, Admin SDK, and Gmail API. Protected by Veracode SAST/DAST, CASA Tier 3, and GDPR compliance -
3
eM Client
eM Client
Boost your email and skyrocket your productivity with the best email client for Windows and macOS. eM Client is a fully-featured email client with a clean and easy-to-use interface. It also offers features for calendars, tasks, contacts, notes, and chat. eM Client's compatibility is unmatched. You can connect to any email service – it will work. This email client works seamlessly with Google Workspace, Office 365, Outlook, Exchange and virtually all conceivable email technologies. Integrates with Online meeting tools such as Zoom, MS Teams, Google Meet and more. eM Client enhances email communication for professionals and home users alike. It is the only email app on the market with the full support of server-side rules and search, instant message translation, "Snooze email" and “Watch for reply” features + easy to use email encryption (PGP and S/MIME). It also works perfectly with Gmail, including support for tags and signature synchronization.Starting Price: $59.95 one-time fee -
4
Bordio
Bordio
Bordio is a comprehensive project management software that integrates team management software, task management tools, and a project planning calendar all in one platform. It brings together everything teams need to get their work done, from setting up projects with a project planner and organizing tasks on a kanban board, to collaborating with team members using a task board. The platform provides a clear view of what needs to be done each day with its online calendar, making overwhelming to-do lists a thing of the past. With features for scheduling tasks on specific days and keeping track of progress with color-coded statuses, Bordio keeps teams focused and acts as an effective project tracker and task tracker. You can invite guests like clients or freelancers into projects at no extra cost and work together seamlessly. The inclusion of a team task planner and team tracker ensures that every member’s efforts are synchronized and visible.Starting Price: $5.99 per user per month -
5
DejaOffice CRM
CompanionLink Software
The perfect CRM Alternative for people who want to own their customer database and store it securely on-premise. DejaOffice PC CRM has all the classic features - Contacts, Calendar, Tasks, Notes, Histories, Projects, and Deals. Auto-dialer from your PC or phone. Outlook email integration. Easy migration from most common CRM systems like Business Contact Manager, Outlook Customer Manager, Act!, GoldMine, Monday, Salesforce and Hubspot. The DejaOffice Mobile CRM app is also free for Android and iPhone users, allowing you to call, text, map and navigate to your customers with ease. You can also plan and manage your day with the ability to create, prioritize and check off tasks, as well as write and store notes to yourself. And, with DejaOffice persistent alarms, you'll never miss a reminder!Starting Price: $69.95 one-time price -
6
Emailgistics
Emailgistics
Emailgistics is a team inbox management solution for Microsoft Office 365. Powerful workflow and analytics features improve team productivity and decision making. Plus, with Emailgistics you continue working in Outlook as your email never leaves Office 365. Route emails efficiently and keep agents focused on their assignments. Redirect time and energy away from manually assigning emails to actually answering them. Tracking to ensure your team replies to customers accurately and promptly. Automated message assignment and workflow rules will route hundreds of emails to the right team members in seconds. Individual agent folders appear within Outlook, helping to ensure your team never misses or duplicates efforts on an email. Prevent emails from falling through the cracks. Receive notifications before emails are at risk of falling behind team standards.Starting Price: $10 per user per month -
7
Microsoft 365
Microsoft
Microsoft 365 for Individuals is a complete productivity suite that combines powerful applications, secure cloud storage, and AI-driven tools to help users achieve more in their daily lives. It integrates popular apps like Word, Excel, PowerPoint, Outlook, OneNote, and OneDrive, all enhanced with Copilot—Microsoft’s intelligent AI companion. The platform enables seamless collaboration, creativity, and organization across devices, including PC, Mac, iPhone, iPad, and Android. With Microsoft Designer, users can create stunning visuals, while Clipchamp adds professional-grade video editing capabilities. Built-in Microsoft Defender provides advanced security for personal data and devices. Microsoft 365 empowers individuals to imagine, create, and accomplish with greater efficiency and confidence.Starting Price: $9.99/month -
8
Google Workspace
Google
G Suite just got better — introducing Google Workspace (formerly G Suite). Everything you need to get anything done, now in one place. An integrated workspace that’s simple to use, Google Workspace lets you spend less time managing your work and more time actually doing it. Address what’s important and let Google handle the rest with best-in-class AI and search technology that helps you work smarter. Work from anywhere, on any device – even offline – with tools to help you integrate, customize, and extend Google Workspace to meet your team’s unique needs. Similar to G Suite, all Google Workspace plans provide a custom email for your business and includes collaboration tools like Gmail, Calendar, Meet, Chat, Drive, Docs, Sheets, Slides, Forms, Sites, and more. We have a variety of plans that are designed to meet your unique business needs. Discover which plan best fits your business needs on our plans and pricing page.Starting Price: $6 per user per month -
9
monday.com
monday.com
Simplify the way your team works with monday.com, a cloud-based project management platform that provides customizable no-code solutions for a wide range of use-cases such as marketing, sales, operations, IT, HR, and more. monday.com allows businesses of all sizes to work in an efficient environment where every team member can assign tasks, automate repetitive work, collaborate in real-time, and share files. With this platform, you can manage everything from simple to complex projects and ensure seamless communication between team members. Customizable dashboards give quick high-level overviews of every project, visual boards help organize tasks, and thanks to integrations with third-party applications such as Outlook, Zoom, Gmail, Google Drive, Dropbox, Excel you can continue working with all your existing tools within the platform. monday.com also offers dedicated solutions, such as monday dev and monday sales CRM, designed to answer the needs of specific industries and verticals.Starting Price: $39/month for 5 users -
10
Apple Calendar
Apple
Calendar is an app from Apple that comes standard on iPhone, iPad, and Mac devices. Calendar from Apple integrates with Apple Mail and can be used as a calendar, and for scheduling.Starting Price: Free -
11
Apple Mail
Apple
Apple Mail is an email client that is included on iPhone, iPad, iPod, and Mac devices by default. You can link it to your Gmail account, or use it instead of Microsoft Outlook. There are two ways you can set up an email account in the Mail app on your iOS device — automatically or manually. Apple may collect and use your domain address (for example, yahoo.com, gmail.com, etc.) in order to improve our products and services. Beyond this, your full email address will not be stored, and will not be used or shared with third parties by Apple. There are two options for setting up an email account in the Mail app on your iPhone, iPad, or iPod touch: automatically or manually. Learn about which option is best for you. Learn what to do if you need help. For example, changes you made to Contacts, Calendars, or Reminders on one device didn't appear on all devices. How to control your inbox and more easily focus on the messages that are important to you. -
12
Aqua Mail
MobiSystems
The most customizable email client for Android. Over 300 settings for full customization. Sync your Exchange contacts and calendar. Format emails with our rich text editor. Rest your eyes with our dark theme. -
13
Airmail
Airmail
Airmail 3 — This fully accessible mail client was designed specifically for iOS, macOS and watchOS. Email workflow is optimized with extensive customizations, custom actions and deep integration with a wide range of apps and services. Airmail is designed from the ground up to be a powerful mail client which allows you to customize it to meet your needs. Integrate your favorite apps, and create custom actions to make your life easier. Whether you're using your Mac, iPad, iPhone or even your Apple Watch, Airmail can be wherever you need. Add as many email accounts of any type your like to Airmail. (Gmail, GSuite, iCloud Mail, Exchange, Office 365, Microsoft Outlook, IMAP and POP3). See all of the email in all of your inboxes at once with the unified inbox feature. You can even exclude accounts from this view if you want to. When you just want to see the important emails, the smart inbox is here for you.Starting Price: $2.99 per month -
14
AOL Mail
AOL
AOL Mail provides a safe and delightful email experience for millions of people around the world. AOL is a global media and technology company, representing the best of all worlds: premium content and innovative technology. Our continued growth and evolution is the product of nearly a decade of careful cultivation of our internal strengths, coupled with thoughtful acquisitions and rigorous integration of the very best technologies and talents on the market. Today, AOL utilizes its four pillars of video, mobile, ad technology and platforms, and open ecosystems both within our own properties such as The Huffington Post, TechCrunch, Mapquest, and MAKERS as well as when working with brands to reach new audiences and drive compelling narratives in ways never done before. AOL is a subsidiary of Verizon. Follow us on twitter @AOL_Inc. -
15
Amazon WorkMail
Amazon
Amazon WorkMail is a secure, managed business email and calendar service with support for existing desktop and mobile email client applications. Amazon WorkMail gives users the ability to seamlessly access their email, contacts, and calendars using the client application of their choice, including Microsoft Outlook, native iOS and Android email applications, any client application supporting the IMAP protocol, or directly through a web browser. You can integrate Amazon WorkMail with your existing corporate directory, use email journaling to meet compliance requirements, and control both the keys that encrypt your data and the location in which your data is stored. You can also set up interoperability with Microsoft Exchange Server, and programmatically manage users, groups, and resources using the Amazon WorkMail SDK. Amazon WorkMail features simple, low, monthly per-user pricing and costs $4 per user per month which includes 50GB of storage per user.Starting Price: $4 per user month -
16
Any.do
Any.do
Millions rely on Any.do, the world's #1 to-do list, to stay organized and get more done. It's the simplest most powerful to-do list app ranked best-in-class by Apple, Google, The Verge, Forbes, and more. Set reminders to make sure important things don’t slip away. With powerful one-time, recurring and location-based reminders, you can be sure critical things don’t get forgotten. Wherever you are, take your to do list with you. Access Any.do on mobile, laptop, desktop, tablet and even your watch! Your tasks are automatically synced across all of your devices, giving you ultimate control.Starting Price: $35.99 per year -
17
BlackBerry Hub+
BlackBerry
Up your game with BlackBerry apps on your Android phone. Give your phone a productivity boost from BlackBerry®. Whether it’s integrating all your messages and social notifications into one place or giving you a really smart Calendar, BlackBerry makes sure doing stuff on your Android™ phone is effortless. Keep organized with BlackBerry® Hub+ Inbox. Inbox consolidates all your email, calendar events and social notifications from apps like Facebook, WeChat, Twitter, LinkedIn and WhatsApp in one unified app. You can also sync your BlackBerry Hub+ Inbox with Wear OS by Google devices to receive notifications and respond directly from your watch. BlackBerry® Hub+ Calendar allows you to schedule appointments and create events with ease. Use the Agenda, Day, Week, or Month view to quickly glance at your events and respond to meeting invitations directly from the BlackBerry Hub+ Inbox. You can also call into meetings directly from your event reminder with just one tap. -
18
BlackBerry Work
BlackBerry
BlackBerry® Work is a multi-OS, all-in-one mobile productivity app designed for business users. It integrates email, calendar, contacts, and more, so enterprises can effectively mobilize their workforce. BlackBerry Work also streamlines business workflows by integrating document access and full fidelity editing of Microsoft® Office documents, so mobile work is never limited. With a fresh modern design, consistent interface across devices, and fast performance optimized for mobile interactions, users get a rich, seamless experience wherever they are, making them as productive – if not more productive – as on desktops. But BlackBerry Work isn’t simply built for the business user. It also meets the most stringent security requirements. BlackBerry Work is part of BlackBerry® Spark™, a comprehensive endpoint-to-endpoint approach to security. Through next-generation containerization, IT can separate business data and personal information, eliminating the risk of corporate data leakage. -
19
BlueMail
Blix
BlueMail by Blix a free, beautifully designed, universal email app, capable of managing an unlimited number of mail accounts from various providers, allowing for smart push notifications and group emailing while enabling personalization across multiple email accounts. The BlueMail app connects directly to your mail server and is the perfect replacement for your stock email app. With a wide range of visual and technical customizations, swipe actions and menus, action bars and buttons, colors and themes – BlueMail delivers powerful capabilities for your Team. Whether you go Pink or Blue. Go BlueMail. Available on Windows, Mac, Linux, Android, iOS, and Amazon. With the people-centric mailbox, you can focus your attention on emails from only people at the flip of a switch by using People Mode. BlueMail’s navigation picker helps you access any account: IMAP, Exchange or POP3 in a breeze. Each account can be identified by a service provider avatar.Starting Price: $5.99 per user per month -
20
Fantastical
Fantastical
A single subscription unlocks all features in both Fantastical and Cardhop across all your devices. Your calendars, tasks, and contacts will be more powerful, more productive, and more fun. Fantastical and Cardhop were both designed to eliminate frustration and make your life more productive. Quickly upload files or images directly from Fantastical to your iCloud, Google, or Exchange events. Attachments are accessible across all devices that sync with your calendar accounts. No matter what device you're using, Fantastical will give you the view you want. See a quick overview of your calendar with the Fantastical DayTicker and Calendar views, and browse comprehensive full screen views of your day, week, month, or year when you need more detail. -
21
EssentialPIM
Astonsoft Ltd.
EssentialPIM is the award-winning email client and complete information management solution. It handles all your email messages, appointments, contacts, tasks, notes and password entries with easy-to-use, intuitive tools.Starting Price: $39.95 -
22
Fastmail
Fastmail
Email you can feel good about. features you’ll love. You get 100% of our efforts and expert support when you need it. Email holds the details of your life. Here, your story is protected, not monetized. Thoughtful and speedy email, calendars, and contacts; all ad-free. Built with you in mind, you’ll love our intelligent features. Internet companies use your data as a way to get rich. But it doesn’t have to be this way. Take back your privacy and get a better email experience. With your email on your side, you spend more time doing what you love. Use Fastmail in your web browser, on mobile devices, and on desktop apps (Outlook, Thunderbird, Mac Mail). Breeze through your day with email, calendars, and contacts all in one app. Seamlessly import your data. Keep your life organized with a full-featured inbox. Bring all your calendars together. Share with your favorite people. Use your custom domain, and own your email address forever.Starting Price: $3 per user per month -
23
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 -
24
Clyton
Gammadyne Corporation
Clyton is an email client with advanced security and spam filtering features. The spam filter is highly configurable and supports DNS blacklist checking (DNSBL). Expect 85% of spam to be eliminated with the default configuration. Email that is suspicious but not obviously spam is quarantined for 24 hours and then retested, providing the blacklist enough time to react to new spam sources. The built-in address book supports personalized mass-mailings. Received email cannot run scripts, download multimedia, or use embedded objects without your approval. Other features include encrypted storage, whitelisting, powerful HTML editor, attachment viewer, message drag and drop, custom message templates, SSL encryption, USB flash drive installation, and much more.Starting Price: $29 -
25
Front
Front
Front’s powerful customer service platform makes five-star service attainable for over 9,000 businesses like yours. We bring together your core support channels in one intuitive, AI-powered workspace where your team can build collaborative workflows across the entire customer lifecycle. As your customer base and their needs grow, Front AI and customer intelligence serves up the efficiency and insights needed to keep your entire organization customer-first, every day. Plus, we care as much about our customers as you do yours: we provide industry-leading service to our entire customer base, regardless of your team size.Starting Price: $19.00/month/user -
26
Edison Mail
Edison Software
We spend most of our time in mail, often reading about innovation and productivity. Somewhere along the way, mail got lost. So, we set out to build the best mail experience in the world for mobile. Get organized with categories. The app's assistant will automatically categorize messages for you to make it easier to find. Like peanut butter and jelly, some things go together. Get alerts for flight status changes including delays, cancellations and gate changes. Monitor the price protection window on recent purchases and get notified if the price drops. Get the forecast for my upcoming trips in the assistant to help me pack. Get notified when packages are out for delivery, and view details right in the assistant. Newsletters and mailing lists you don't read and may want to unsubscribe from. Surface directions to the airport for your next flight or your hotel for quick one tap access. -
27
Daybridge
Daybridge
Manage your time, not your calendar. Daybridge is a calendar built for people, not companies. Unlike most calendars, Daybridge doesn’t confine you to a half-empty grid. So you’re free to structure your day exactly how you like. Mix events, tasks, and notes together in the same place. Daybridge asks a few questions when you sign up. By learning about your personal situation, we’ll drastically cut down the amount of time you spend adding things to your calendar. Each of your Spaces has its own timeline. It scrolls infinitely in both directions. So you can look back, and plan ahead. Smart cards live on your timeline. They put helpful, relevant information and actions right at your fingertips. Manage life, work, and everything in between. But keep it all neatly stowed in different Spaces. Create a Space just for your trip. Daybridge sorts out an itinerary, and even helps you minimise jetlag. -
28
Calendly
Calendly
Calendly is a scheduling automation platform that helps individuals, teams, and enterprises book meetings without the back-and-forth emails. Share custom booking links, set availability preferences, and automate reminders, follow-ups, and calendar syncing. Calendly supports one-on-one, group, collective, and round robin scheduling, with smart features like buffer times, time zone detection, and meeting caps. Integrate with Google, Outlook, Office 365, Zoom, Microsoft Teams, HubSpot, Salesforce, Slack, and more to embed scheduling into your existing workflow. Calendly helps entrepreneurs, sales, marketing, recruiting, customer success, and professional services teams save time, reduce no-shows, and improve the client experience. Built for flexibility and scale, Calendly offers admin controls, reporting, and enterprise-grade security. Sign up for free and simplify your scheduling today—no credit card required.Starting Price: $10 per user per month -
29
Google Calendar
Google
Make the most of every day. The new Google Calendar app helps you spend less time managing your schedule and more time enjoying it. A Schedule with a View. Schedule View brings your schedule to life and makes it easy to see what's ahead with images and maps. Everything you need. Various views of your day, week and month, invitations, web calendar and much more. Backup everything. Your events are always saved on the Web. If you lose your phone, you don't lose your address book. Different ways to view your calendar - Quickly switch between month, week, and day views. Events from Gmail - Flight, hotel, concert, restaurant reservations, and more are added to your calendar automatically. Tasks - Create, manage, and view your tasks alongside your events in Calendar. Video conferencing - Easily add video conferencing to calendar events. Quick event creation - Smart suggestions for event titles, places, and people save you time when creating events.Starting Price: $0 -
30
Hiri
Hiri
An incredibly easy way to manage your inbox. Built for the Microsoft email ecosystem. We also support: outlook.com, hotmail.com, live.com and msn.com. Email doesn’t have to be ugly. A cluttered inbox is like a cluttered desk - it makes it difficult to get in the right headspace. We’ve used the UX principle of progressive disclosure throughout Hiri so you only see what you need when you need it. Good design is at the heart of what we do. For example, regardless of what resolution or what size monitor you use the center pane in Hiri will always remain the same width. This is because the optimum readable length of a sentence is about 96 characters. Any longer and it can be difficult to find the beginning of the next sentence. Any shorter and your eyes need to work harder, causing fatigue.Starting Price: $39 per year -
31
Newton Mail
CloudMagic
Email app with space-age features for modern-day business communication. Designed to delight, for all your email accounts, on all your devices: iPhone, iPad, Android, Mac & Windows. Read Receipts comes baked in with Newton, with all your sent emails tracked without you having to do anything. Apart from giving you instant gratification, it also makes your follow-ups timely and effective. Recap automatically brings back conversations that are waiting for your reply or that need following up. It also covers other mails with due dates, reminders etc., so that nothing slips through the cracks. Tidy Inbox helps you stay clear of unwanted emails by automatically removing newsletters and other distractions from inbox. Focus on the emails that actually matter and make your inbox distraction-free. Most of us are assigned tasks via email. But some of us like to manage them outside our Inbox. Newton lets you save emails to Todoist, Evernote, OneNote, Trello or Asana in a single click.Starting Price: $49.99 per year -
32
Nili
Nili
Nili is the love of Canadian email addresses. Nili offers Canadian-hosted Business email, website and domain. Made by Canadians for Canadians. A business email address is a significant factor for any sole businessperson, partnership or corporation because it creates a professional image. It will appeal to existing and prospective clients, suppliers and investors more so than the type of standard email addresses we use for personal, every day. Setting up a .ca business email address It is really easy to set up a business email account. The process is the same as setting up any other email address. It will enable you to distinguish between your personal and business-related email messages clearly. You can set up a Canadian email account for your personal use on Nili.ca. However, creating a more professional email account through a custom domain name is better. This means you can set up a branded email address with a custom .ca domain extension for your business.Starting Price: $4 per month -
33
Microsoft Exchange
Microsoft
Work smarter with business-class email and calendaring. Exchange helps you collaborate on your critical documents and gives you a focused inbox that prioritizes important messages and adapts to your work style, so you can get more done–faster. Get access to a more personalized inbox with helpful features and a smarter, more organized way to view and interact with email. Search enhancements give you faster and more complete results. With Add-ins, get powerful customization and extensibility, which connect you to modern services and internal line-of-business applications. Organize your time with a calendaring system that goes beyond basic scheduling of appointments and commitments. Automatically capture events from email such as flights and hotel reservations, and get suggestions about where to meet based on your location. Microsoft Exchange Online offers a hosted email service for business. Exchange Online helps protect your information with advanced capabilities. -
34
Microsoft Office 2021
Microsoft
For customers who aren’t ready for the cloud, Office 2021 is the next on-premises version of Word, Excel, PowerPoint, Project, Visio, Access, and Publisher. Create presentations, data models, and reports with tools and capabilities like PowerPoint Morph, new chart types in Excel, and improved inking across apps. Manage your time, email, and contacts more easily with features like Focused Inbox, travel and delivery summary cards in Outlook, and Focus Mode in Word.Starting Price: $249.99 -
35
Microsoft To Do
Microsoft
Focus, from work to play. Accomplish what’s meaningful to you each day with My Day, intelligent and personalized suggestions to update your daily to-do list. Quickly capture and retrieve your lists and tasks across devices to help you stay organized at work, home, or on the go. From consulting a simple grocery list to planning for a big day, shared lists help you stay connected with family, friends, and colleagues. Break tasks down into simple steps, add due dates, and set reminders to keep you on track. -
36
Mail.com
Mail.com
Choose your email address from our huge selection of domains – from @elvisfan.com to @consultant.com – to suit all your needs. At mail.com you can create a personal and unique email address to express who you are, entirely for free. Start by choosing your username and desired email domain from the 200 domains which are listed below. Become a premium user to benefit from exclusive features. Once you register as a free user, you can easily upgrade your account. mail.com is a free webmail client based in the United States. It offers a wide range of unique email domains, a customizable user interface, as well as numerous useful features integrated in each email account. Purchased in 2010 by the German United Internet Group, Europe's leading internet specialist and one of the world's largest web hosting provider.Starting Price: Free -
37
Mailbird
Mailbird
Mailbird is a fast, modern email client for Windows and macOS, trusted by millions with over 4 million downloads. It brings all your accounts—Gmail, Outlook, iCloud, IMAP, Exchange—into one unified inbox with smart features like Snooze, Undo Send, Quick Reply, Send Later, email snippets, and drag-and-drop organization. Customize your workspace with themes, custom avatars, and flexible layout options. Stay productive with sidebar integrations for Google Calendar, WhatsApp, Slack, Trello, Asana, and more—no app switching needed. Built natively for each platform and optimized for both Windows 11 and Apple Silicon, Mailbird delivers speed, simplicity, and seamless control. Available in a Free version with an optional Premium upgrade. Backed by top-rated customer support.Starting Price: Free -
38
Mailscale
Mailscale
Mailscale is a software that helps you generate up to 1000 email accounts. As a result, you can send cold emails at scale and get more clients than you can handle. The simple reason you’re not getting enough clients is that you’re not being seen. Your next 100 clients are literally an email away. Sending cold emails at scale is a hassle, to not land in the spam, you need to create dozens of them. Mailscale automates email account creation faster & cheaper. We can help you create your virtual sales force of 50 or 1000 email accounts in minutes. Manually set up domains, email accounts, DMARC, DKIM, SPF, domain forwarding, and email forwarding. Let Mailscale generate email accounts for you, then add them to your email-sending tool with a single click. Mailscale helps more than 500 agency owners, freelancers, and software founders to get more clients. Buy secondary domains inside of Mailscale, fill out a 5-minute form, and get your CSV of ready-to-use email accounts by tomorrow.Starting Price: $79 per month -
39
Mailspring
Foundry 376
Boost your productivity and send better email with Mailspring, the best mail client for Mac, Linux, and Windows. Multiple accounts (IMAP & Office 365), touch and gesture support, advanced shortcuts, lightning-fast search, undo send, unified inbox, read receipts, link tracking, and more, mac, windows, and linux support, themes and layouts (including dark mode), localized into 9 languages. Mailspring indexes your mail so you can use advanced, Gmail-style search queries and search message contents across all your connected accounts. Never lose an email again. Understand your audience. Send timely follow-up. Turn clicks and opens into actionable insights. Mailspring Pro is your unstoppable email sidekick for sales and business. Mailspring Pro removes the limits in the free version, so you can snooze messages, schedule reminders, and send later an unlimited number of times and conquer your inbox. Understanding your contacts and customers is the key to connecting with them.Starting Price: $8 per month -
40
OpenText GroupWise
OpenText
OpenText GroupWise is a secure, enterprise-grade messaging and collaboration platform that combines email, calendaring, contacts, and scheduling into a single, flexible system. It is built for organizations that require strong security, compliance, and reliability across highly regulated industries such as government, education, utilities, and healthcare. The platform enables teams to customize the user interface, integrate with systems like Microsoft Exchange and Active Directory, and centrally manage contacts, address books, and shared calendars. GroupWise includes intelligent scheduling tools, travel-time adjustments, and collaboration features that help streamline workflows and improve daily productivity. Its security measures—such as multifactor authentication, encryption, and gateway protection—ensure that sensitive communications stay protected. -
41
HCL Notes
HCL Software
Integrate social collaboration, messaging and business applications into a single workspace. HCL Notes is the email client software that gives teams access to email, calendar, and contact management capabilities, and seamlessly integrates other collaboration tools and HCL Domino business applications. With an improved user experience and enhancement of essential mail features, HCL Notes transforms your everyday email into an operational center and becomes even more essential to how your team’s work. Integrate social collaboration, messaging and business applications into a single workspace with Notes. Now, with an improved user experience and enhancement of essential mail features. From leading logistics companies to powerful banks and fashion houses, thousands of the smartest businesses in the world rely on Notes to help run their everyday. -
42
Kerio Connect
Aurea
Secure, enterprise-style email, calendar & collaboration without the high cost. Kerio Connect delivers all the features and functionality for collaboration and messaging solution without the complexity and high price tag of other systems. Email is integrated with shared calendars and scheduling, contacts management, tasks, notes, shared and public folders, and instant messaging. Synchronize messages by direct push to your choice of mobile device via Microsoft ActiveSync. Instant Messaging is XMPP-compatible and can be used from various 3rd party chat/IM applications on desktop and mobile phones. You can install Kerio Connect in 10 minutes and users can be up and running in just 10 minutes more. Kerio Connect can be deployed on-premises or in partner-hosted cloud environments. Deploy for users on Mac, Windows, or Linux; plus full support for Outlook (Windows and Mac) and many other IMAP or POP compliant email clients.Starting Price: $36.50 -
43
IceWarp
IceWarp
The only office rule is, there is no office. Business email, TeamChat for project teamwork, real-time office document collaboration and online meetings. All in our secure cloud and for half the usual cost. Chat in teams organized around projects, upload files, mention coworkers, comment on posted emails, pin important posts. Integration with email enables sharing received messages directly to TeamChat room for colleagues‘ attention. Skyrocket your office work effectivity with Desktop Client and Desktop Office documents on Windows as well as Linux devices. Get the complete Suite, or choose only the app you need.Starting Price: $312.00/year/user -
44
Hexamail Flow
Hexamail
Hexamail Flow is a full email client, with calendaring, tasks and contacts. It operates with Office 365, Gmail, including modern authentication methods (OAUTH) works with Exchange on premises and all IMAP and POP3 servers. The GDPR data protection module offers email and office document redaction features including full PST file import, eml and msg file import, office document import and printing output or PDF generation of redacted content.Starting Price: Free -
45
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 -
46
Spark Mail
Readdle
Love your email again. The best personal email client. Revolutionary email for teams. Intelligent email prioritization, noise reduction, and the most advanced email tools at your disposal. Reach Inbox Zero for the first time. Spark intelligently prioritizes your email. It bubbles important messages from real people to the top. Pin and reply to those, and batch archive the rest. Spark reduces the noise by only notifying you about emails from people that you know. Reclaim your space for creativity and get peace of mind. We do our best work as part of a team. Spark allows you to create, discuss, and share email with your colleagues. Take your team collaboration to the next level. Collaborate with your teammates using real-time editor to compose professional emails. Invite teammates to discuss specific email and threads. Ask questions, get answers, and keep everyone in the loop. Save time when you regularly send similar email messages to people.Starting Price: $6.39 per user, per month -
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Shortwave
Shortwave
Email connected the world, but it lost its magic along the way. We believe it deserves better, and we're on a mission to bring email up to speed (literally) with modern messaging apps. Email should prioritize people, not advertising. Getting through your inbox shouldn't require busywork, and sending an email should be as fast as typing a text message. That's why we're building Shortwave: to recapture the magic of email with a beautifully designed product that works for everyone. Create channels to keep your team on-topic and make past conversations searchable. Instant delivery, typing indicators, and emoji reactions make conversations with other Shortwave users come to life. Use @-mentions to push notify the right people when you need them to join in. Shortwave connects to your existing Gmail account. Sign in today to get your inbox organized in minutes. You'll have the option to invite your teammates later. -
48
Roundcube
Roundcube
Browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an email client, including MIME support, address book, folder manipulation, message searching and spell checking. Drag-&-drop message management. Full featured address book with groups and LDAP connectors. Canned response templates. Responsive skin (multi-device support).There are thousands of services that make use of Roundcube to provide webmail to millions of users. We love to see our application in so many hands and believe it is essential for society at large to have Open Source software available for a crucial task such as communication. Below is a list of services that not only use, but actively contribute to Roundcube and where usage of those services helps to improve and further develop Roundcube webmail. These are the services that make it possible for us to continue improving our software and to make it freely available for everybody. -
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Postbox
Postbox
All your email accounts in one place, innovative features, easy organization, fast search, and a beautiful UI. Fast, sleek and powerful, Postbox is guaranteed to give you email superpowers. Let our email organizational features declutter your inbox and your mind. Pixel-perfect, intuitive interfaces that act like real Mac and Windows apps, not webpage experiments. Build your own theme using our powerful Theme Editor, or add a professionally-designed Theme Pack that you can customize any way you like.Starting Price: $49 per user lifetime license -
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Thunderbird
Mozilla Foundation
Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features! Thunderbird makes email better for you, bringing together speed, privacy and the latest technologies. Focus on what matters and forget about complexity. Multiple features, such as built-in Do Not Track and remote content blocking, work together to ensure your safety and privacy, so you can have peace of mind. With Add-ons (Extensions & Themes) and many more features you can change the look and feel of Thunderbird in an instant. Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars. Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users.
