Alternatives to RelayFax
Compare RelayFax alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to RelayFax in 2026. Compare features, ratings, user reviews, pricing, and more from RelayFax competitors and alternatives in order to make an informed decision for your business.
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1
Greatmail
Greatmail
Dependable cloud based email hosting with spam filtering, antivirus protection, generous storage and webmail. Compatible with Outlook and all other POP3/IMAP clients. High volume SMTP service for responsible senders. Outbound relay service for transactional messages, email marketing campaigns, newsletters and other applications. Dedicated email servers, clustering and multiple IP load balancing for high volume senders. Fixed monthly cost with unlimited sending and reputation monitoring. Greatmail is an email service provider (ESP) specializing in business class email hosting, SMTP hosting and email servers. For ISPs, application programmers and cloud developers, we also provide custom solutions including dedicated IP servers and process specific, load balanced configurations with multiple servers. -
2
SMTP.com
Ziff Davis
Reliable SMTP relay and email delivery services. Powerful email delivery services that enable you to send and track high volume emails effortlessly. Integrate and start sending in minutes. All your transactional, email relay and email delivery needs under one roof. Whether you need a low-latency email delivery provider for your transactional emails, scalable infrastructure for high-volume sends or reliable backend solution for your marketing campaigns, SMTP is built to deliver. Reputation Defender is SMTP’s proprietary technology that uses big data to proactively monitor your email list health and safeguard your domain and IP reputation among ISPs by suppressing bad emails in your sends from hard and soft bounces. This ensures your delivery rates and inbox placement incrementally gets better over time.Starting Price: $25 per month -
3
Venta4Net
Venta Association
Venta4Net™ is a network version of the popular VentaFax software. Venta4Net products are intended for sending and receiving fax and voice messages via a fax modem (regular telephony) or the Internet (IP telephony). It enables users to send fax and voice messages from any computer in a local (or global) network with the client end software installed. Messages prepared by clients are sent through a server – one of the computers in the network with the server end of Venta4Net installed. This computer must be equipped with a modem (or several modems) connected to a phone line (lines) or connected to the Internet (VoIP telefpony). The server can work as an answering machine and receive fax and voice messages. Received messages (depending on the settings) can be forwarded to a specific user or several users. Later on, these messages can sent over to other recipients manually.Starting Price: $399 one-time payment -
4
Microsoft SMTP Service
Microsoft
Microsoft SMTP Service is a mail server software that enables Microsoft Windows Server operating systems to send and receive emails. It is a component of Internet Information Services (IIS) and is used to relay emails between mail servers. Microsoft SMTP Service is a popular choice for organizations that need a reliable and scalable mail server solution. It is easy to install and configure and can be used with a variety of email clients. Microsoft SMTP Service supports a number of features, including: Relaying emails between mail servers: Microsoft SMTP Service can relay emails between mail servers, which means that it can be used to send and receive emails for multiple domains. Supporting multiple email clients: Microsoft SMTP Service can be used with a variety of email clients, including Microsoft Outlook, Mozilla Thunderbird, and Apple Mail. Providing security features: Microsoft SMTP Service provides a number of security features, such as authentication and encryption -
5
GAO Research
GAO Research
GAO Research Inc. is your software solution provider for embedded modem software, fax modem software, speech codecs, and telephony software for electronics equipment, telecommunications and semiconductors for embedded engineering. GAO offers VoIP & FoIP solutions, V.92 and V.90 with any fallback softmodems required, Super G3 & G3 and standard fax software, and speech & video codecs – all of this on the industry's broadest range of DSPs and microprocessors. In addition to superior software, GAO provides unparalleled technical support, extensive platform expertise, and state-of-the-art testing facilities. GAO offers systems designers and engineers a complete VoIP packaged solution, which includes modules for fax and data over IP. This reduces development time and time to market. The typical components of an IP Telephony System are User Interface, Voice Processing, Network Protocols, Network Management, and System Services. -
6
Relay
Relay Technologies
Relay is a tech-enabled delivery network, empowers businesses to grow and elevate their ecommerce operations. Our technology-first delivery model is built for efficiency, scalability, and convenience. With an API-first technology platform, purpose-built for e-commerce, Relay’s platform is built to deliver optimal efficiency leveraging a data-driven approach. Thanks to the Relay solution, Retailers will be able to monitor parcel journeys from start to finish through live-tracking and routing optimization features, as well as our interactive performance dashboards. Discover what industry leaders partnering with Relay are saying about us and how they leverage our best-in-class delivery network to deliver results. With next-day delivery expertise, competitive pricing and a sustainability-focused core, find out how we can help you grow your business whilst delighting your customers. -
7
Firefox Relay
Mozilla
Firefox Relay email aliases protect your real email address from public view, automatically forwarding emails to your real inbox. Now you can receive only the emails you want in your inbox. Sign up with your Firefox account to get started. Share Relay email aliases instead of your real email address to protect your email inbox, as well as your identity. As you browse, the Relay icon will appear where sites ask for your email address. Sign in to the Relay dashboard to keep track of the aliases you’ve created. Relay will forward messages to your email address. If an alias gets spam or unwanted messages, you can block all messages or even delete the alias, right from the dashboard.Starting Price: $0.99 per month -
8
Relay
Relay Network
Relay Network is redefining customer engagement through its innovative Business Feed Platform, a personalized B2C communication channel inspired by the familiar scrolling feed experience. By combining the interactivity of mobile feeds with the immediacy of SMS, Relay connects businesses with customers in a timely, relevant, and secure way—no logins or app downloads required. The platform supports multimedia content, forms, e-signatures, and two-way chat, giving users countless ways to interact directly within their personalized feed. Relay’s solution is fully HIPAA, SOC 2, TCPA, and HITRUST compliant, making it ideal for industries that handle sensitive information such as healthcare, finance, and membership organizations. Businesses using Relay see major improvements in engagement, conversions, and digital adoption compared to traditional communication channels like email and portals. Overall, Relay helps organizations deliver the right message at the right time. -
9
Selectron Relay
Selectron Technologies
Relay is a powerful self-service application suite. With a single platform, governments can connect the work of their agencies in one location, coordinating and amplifying their impact through automation, data analysis, and engagement. For agencies, Relay’s centralized, connected approach to automated customer service frees up staff time, lowers costs, and increases the quality of customer service. For citizens, they receive the convenience and ease of accessing their data when, where, and how they want. Relay Portal is a powerful administrative and data management tool that provides real-time health statistics, detailed reports, outbound campaign management, configuration options, and more, all through a user-friendly dashboard. Payments for agencies using our solutions are PCI compliant and PA-DSS validated. By meeting the highest standards for payment security, agencies and their customers can feel confident knowing their data is protected. -
10
Relay
Relay
Relay is the cloud platform for frontline teams. Tailored for frontline teams, Relay is an innovative platform that combines hardware, cloud software, and mobile connectivity. Relay bridges the gaps between devices and languages, offering a seamless communication experience nationwide, making it easier than ever to connect with others. Relay’s platform ensures frontline team safety with emergency alerts, real-time location, two-way communication, and a commitment to brand safety compliance. Relay’s platform is your path to team optimization, offering operational insights that enable your team to work smarter and achieve greater efficiency. Bulky and slow, radios can only communicate with other radios and range limitations can leave team members out of reach. Distracting and sometimes dangerous, phones require your head down, focused on a screen, and cannot communicate with two-way radios. -
11
Relay
Relay
Expand your reach without sacrificing your margins! Relay delivers orders from all your platforms so that you can keep using third-party apps for your restaurant’s marketing, while cutting your delivery commissions. Stop letting third-party apps eat your margins while overcharging your customers. With Relay as your fulfilment partner, you could reduce your commissions by up to 75%. No more juggling multiple apps and devices. We can set you up with a unified management system that aggregates phone-orders, orders from your website, and integrates with all the most popular delivery apps overnight! Talk to one of our specialists about your restaurant's needs, and they will walk you through Relay’s technology and services. Unselect the delivery option from third-party platforms. Continue to receive orders from 3rd party delivery platforms but use Relay for a more affordable and consistent delivery option. -
12
Relay
Relay Financial
Relay is an online business banking and money-management platform that gives small businesses full control over their cash flow by combining banking, expense management, bill pay, invoicing, and financial automation. With Relay, businesses can create up to 20 separate checking accounts and two savings accounts, issue physical and virtual debit or credit cards (with spend controls), and accept or send payments via ACH transfers, wires, and checks, including deposits from platforms like PayPal, Stripe, or Square. It lets businesses organize income and expenses across different categories, automate transfers between accounts by dollar or percentage, and allocate funds to taxes, payroll, savings, or profit automatically. Relay also supports billing workflows and vendor payments: you can upload or email bills (or sync from accounting software), approve them with customizable approval rules, and pay via ACH, wire, or check directly from the platform.Starting Price: $30 per month -
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The only reliable and decentralized RPC network in the world governed by a high-performing DAO with the most contributor-friendly ecosystem. High availability with 99.9% uptime. Low latency through optimized nodes. Free and flexible payment options, converting users to owners. Get an endpoint in seconds. Thousands of active apps, hundreds of billions of relays served, and 40 blockchains to service, get rewarded for your work. DApps need to provide blockchain data for end users, but developers don't want to deal with the hassle of running their own nodes to do this. Our protocol incentivizes a decentralized network of remote procedure call (RPC) nodes to relay data from any of our supported blockchains to the DApp users who need it. DApps send their RPC requests to our global network of nodes, which relay the requested blockchain data back to those DApps. For providing this service, our node runners earn $POKT rewards.
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14
marketRelay
MarketRelay
marketRelay℠ is a simple cloud-based solution for managing product line content and pricing, distributing it to your downstream channels, and publishing it across any number of digital platforms. Simply enter or upload your product information into marketRelay℠, connect to your preferred platforms and partners, and it’s ready to go. Whenever you make a change, now you can easily make updates and keep it current everywhere. Through an array of marketRelay℠ tools, now you can maintain ultimate control over your product line content and post it anywhere and everywhere you want it to be. Post it in a few places, or a thousand. The marketRelay℠ platform enables manufacturers, distributors, chains, and franchises to distribute product line content to and through their entire distribution chain, ALL from one place. With your permission, reps, resellers, locations, and franchisees simply subscribe to receive your product line. -
15
Polyhedra
Polyhedra
Bringing interoperability and scalability with cutting-edge zero-knowledge proof systems. zkBridge uses zkSNARKs to enable a prover to efficiently convince the receiver chain that a certain state transition happened on the sender chain. zkBridge consists of a block header relay network and an updater contract. The block header relay network retrieves the block headers from the sender chain, generates proofs of the validity of the block headers, and sends the headers along with the proofs to the updater contract (set up on the receiver chain). The updater contract maintains a light-client state. It automatically adds block headers of the sender chain once the associated proofs are verified, and updates the current main chain of the sender chain. Polyhedra Network implements infrastructures for interoperability across heterogeneous systems which guarantee strong security without extra trust assumptions. -
16
nostr
nostr
The open protocol that creates a censorship-resistant global "social" network is based on cryptographic keys and signatures, making it tamperproof. It does not rely on any central server or P2P techniques and is resilient as a result. Everyone runs a client, which can be a native or web version, to publish posts that are signed with their key and sent to multiple relays. Updates from other users are requested by asking multiple relays if they have any information about those users. Any individual can run a relay, which simply accepts and forwards posts without requiring trust. Verification of signatures occurs on the client side.Starting Price: Free -
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Esker VSI-FAX
Esker
Esker VSI-FAX is a comprehensive, multi-platform fax server solution that enables businesses to send and receive faxes directly from desktop applications and enterprise systems across Linux, Unix, and Windows environments. By integrating seamlessly with existing Voice over IP (VoIP) networks through Fax over IP (FoIP) technology, it eliminates the need for traditional fax hardware, reducing operational costs by up to 40%. The solution supports high-volume production faxing and offers features such as automated document delivery, native file imaging, and flexible routing options, enhancing efficiency and reliability in fax communications. -
18
BlueRelay
Indellient
Enhance customer experience in Client Communications by improving document accuracy and processing time. Blue Relay makes Client Communications Management easy by Automating Workflows and Business Processes. Blue Relay also provides total visibility with Resource Management featuring customizable dashboards and reports. Compliance and SLA Adherence are improved by powerful features supporting the exchange of detailed requests that include inline annotations, comments, document compare, and checklists. A Large Customer Communications Service Provider used these capabilities and more to significantly reduce operational cost, effort, and errors. Proof of the value of Blue Relay to our clients has been demonstrated by their growing adoption of the product, empowering increased portions of their workforce. Custom checklists make sure critical processing steps are followed consistently and uniformly across the team.Starting Price: $10.00/month/user -
19
Snappy Fax Server
John Taylor & Associates
Our software was originally designed to send and receive faxes using your telephone line and your fax modem, and of course, we continue to support that “real time” mode. Several years ago, we recognized the value of online faxing. While we do not provide an online fax service directly, Snappy Fax and Snappy Fax Server both support FaxAge and SRFax online fax services. We chose these two and only these two online services after much research and testing, which included about two dozen services. They are absolutely the best choice in terms of cost, security and HIPAA compliance. Eliminating a cumbersome web interface, streamlining the fax process and receiving new faxes completely unattended in the background, Snappy Fax is the perfect front-end for FaxAge and SRFax.Starting Price: $29.99 one-time payment -
20
DIgSILENT StationWare
DIgSILENT
DIgSILENT StationWare is a reliable central protection settings database and asset management system, based on the latest .NET technology. StationWare stores and records all settings in a central database, allows modelling of relevant workflow sequences, provides quick access to relay manuals, interfaces with manufacturer-specific relay settings and integrates with PowerFactory software, allowing powerful and easy-to-use settings coordination studies. DIgSILENT StationWare is a centralised asset management system for primary and secondary equipment. The large number of individual settings for numerical relays nowadays requires careful management in order to function reliably. Handling data from networks containing devices from various manufacturers can be problematic from an IT perspective, with each manufacturer requiring installation of its own software. -
21
Elastic Email
Elastic Email
Tens of thousands of companies already send their emails with Elastic Email. An amazing Email Marketing platform, built on the most cost-effective Email API. Deliverability, reliability and scalability matter. Easily connect and send your email via our HTTP API or SMTP relay and scale to 100+ million emails per month on our ultra-fast global infrastructure. Build better relationships with your recipients with every campaign you send. Elastic Email provides all the marketing tools you need to help your contacts feel connected. Deliverability, reliability, and scalability matter. Easily connect and send your email via our HTTP API or SMTP relay and scale to 100+ million emails per month on our ultra-fast global infrastructure. Get the most out of your email marketing. Create beautiful emails, send newsletters, and automate your campaigns in a flash.Starting Price: $5 one-time payment -
22
SendVerify
SendVerify
Email API and SMTP relay to not just send and measure email sending, but also alert and optimize. We provide you with the tools, expertise, and support needed to reliably deliver emails to your customer's inboxes on time, every time. Powerful email marketing software to send campaigns, build your list, and automate your marketing. Improve the deliverability of your email list by automatically cleaning all emails before sending them. -
23
Relay
Relay.app
Relay automates more of your work than any other tool by combining AI assistance, human-in-the-loop collaboration, and a multiplayer experience. Embed AI in any workflow, no prompts needed. Generate content for templated messages, extract information from incoming emails, summarize user feedback, classify customer support tickets, and more. Some workflows shouldn’t be 100% automated–you need a human in the loop. Relay makes it easy to involve your team when you need it. Approve critical automation before it runs, review the work of AI, and add a personal touch to outgoing communications.Starting Price: $9 per user per month -
24
Happy Coder
Happy Coder
Happy, also known as Happy Coder, is a free, open source mobile and web client that lets users spawn, view, and control multiple Claude Code AI coding agent sessions on any device, phone, tablet, laptop, or desktop, by syncing them in real time using an encrypted relay architecture so that a session started on one device can be continued seamlessly on another without losing context. It comprises three coordinated components, a CLI program that runs locally to launch and monitor Claude Code, a mobile app or web app that connects securely to the CLI session using end-to-end encryption so nobody (including the relay server) can read your data, and a relay server that simply passes encrypted blobs between devices without access to the contents; this design lets developers maintain their existing tools, editors, and workflows while adding remote control capability.Starting Price: Free -
25
Box Relay
Box
Empower your users and teams to automate repeatable work in their own way. Relay's simple, code-free design allows anyone to create workflows in minutes. That frees up IT to spend more time on what matters most. A flexible interface and a variety of powerful features help you automate simple tasks and sophisticated processes. The result: better workflows such as streamlined content review, standardized employee onboarding, and accelerated contract approvals. Automation means nothing without visibility into work in progress. Relay shows the progress of each running workflow with an exportable audit history. By tracking and optimizing business processes, work gets done even faster and no one is missing a beat. Since Relay inherits all the benefits of our content platform, you get more for your money. Manages content review processes, agency collaboration, and product and press releases.Starting Price: $130 per month -
26
Joy Fax Server
Joyhong Software
Joy Fax Server allows you to send and receive faxes in a network environment by using a public phone line. Our easy-to-use Fax software also can offer you the ability to manage your group faxing and the fax contact lists. The Fax server receives incoming faxes, then prints them or emails them to your mail box automatically. Outgoing fax jobs are submitted to the server from Joyfax Client running on the workstations or terminal server clients(i.e. Citrix Client). Network clients are automatically notified when incoming faxes are received and of the results of outgoing fax jobs. Fax to Email. Automatic fax routing. Fax over IP (FoIP), save Up to 90% on calls. SMS notification for Outgoing and Incoming Fax. Blacklist to stop Junk/Spam faxes. Simple faxing just as fast printing. Integrated with 3CX Phone System PBX. Compatible with all Windows and Windows Server versions, both 32bit and 64bit.Starting Price: $19.95 one-time payment -
27
Bulk Response
Bulk Response
BulkResponse is the only Bulk Email Program along with Mass Email Marketing services that allow it's users to import unlimited contacts. Established Since 2009, BulkResponse has helped thousands of customers till date achieved their Email Marketing goals. If you want to send transactional emails and email marketing campaigns, then bulk response is all you need. You come across a lot of options when it comes to SMTP Relay Service Providers, but BulkResponse is the cheapest in price yet equally good in service quality. With BulkResponse, you can send marketing and transactional emails to millions of people in your mailing list while bypassing your own email server. With BulkResponse SMTP Relay Service, you can have Real-Time Email Tracking, Advanced Analytics for your email campaigns, Detailed Logs to Diagnose Email Delivery Failures, Increased Deliverability Features that help in reducing bounce rates and spam complaints as well as Email Address Validation Service.Starting Price: $35 per month -
28
Image Relay
Image Relay
Image Relay changes the way you go to market. We combine the best of Digital Asset Management (DAM), Product Information Management (PIM), and creative operations tools in one holistic and easy-to-use solution, so you have complete control over your brand at every step. Your marketing gets to market faster than ever before. Managing content and information for thousands of products is hard. Really hard. Your sales team and partners always need up-to-date, accurate material to keep the business running, and it’s your job to deliver. Marketing Delivery from Image Relay gives you the tools to get the right content and information in the right hands at the right time. Get everyone working together on the right assets. And get everything ready for delivery with fully automated workflows. Introducing the Marketing Delivery Lifecycle, powered by Image Relay. It unifies every step of the process, accelerating time-to-marketing and driving limitless opportunity. -
29
Applied Relay
Applied Systems
Your business requires a technology foundation that can support all your day-to-day operations for all of your staff. Applied Relay is a management system that is an extension of your team, supporting all policy and servicing workflows, including eTrading activity across all personal lines and the efficient administration of all commercial lines products in a single application. The application also delivers a range of partner integrations and extended customer self-service capabilities, so data can easily move through your technology stack for more efficient employee operations and better customer service. By increasing automation and connectivity with Applied Relay, your brokerage can more effectively grow your book of business, reduce costs, and provide the best coverage and differentiated service to your customers.Starting Price: $100.00/one-time/user -
30
KumoMTA
Kumo Corp
KumoMTA is an Open-Source, enterprise-grade email message transfer agent (MTA) software for sending high-volume, business-critical emails. KumoMTA is typically chosen by high-volume email users looking to replace PowerMTA, Momentum, or traditional Open Source MTAs. KumoMTA offers high-performance message relay to the tune of millions of messages per hour per server, combined with extreme flexibility and configurability through its use of a Lua scripting engine for configuration and message management. For more information on KumoMTA see our Sourceforge project page.Starting Price: $0 -
31
TIMER
Hot Time Software
Timer is the perfect timing software for computer control hydroponics, relays, solenoids or lights from a computers printer/parallel port. This program enables the PC to connect to the outside world by using the parallel or printer port LPT1. Controls in real time via computer with ON, OFF and Auto modes. A click of the mouse and your sprinklers can be watering, turn a light on, the options are endless. Save money with unbreakable software compared to expensive timer controllers. Connect an old computer with a relay card, a few solenoids and a printer cable to end the frustration of timers. Save on water and power bills. Be able to fine tune the exact amount of time a solenoid or relay turns on or off saving you valuable water and power. 24 hour cyclic timing range with day scheduling using 1 second to 12 hour switching for ON times. Timer can take control of Ventilation, Pumps, Heating and Cooling, and Light Cycles (e.g. 16-18 hrs light, 6-8 hrs dark) depending on your needs.Starting Price: $49.95/one-time/user -
32
Serverless360
Kovai
A portal focused on Operations and Support for Microsoft Azure Serverless resources. Complementary tool to Azure portal in supporting Azure Serverless Application. Manual and Automated message processing, way beyond Service Bus Explorer. Detect failure, autocorrect state, correlate run resubmission, Azure portals gaps addressed. Detect anomalies, autocorrect state, achieve what are not possible through Application insights. View and process dead-letters in Event Grid subscriptions along with extensive monitoring. Simulate test environment, monitor partitions, check for active clients and much more. Auto clean blobs. Monitor storage account components on their state and properties. Monitor Products, Endpoints and Operations at multiple perspectives. Auto manage APIM state. Manage and monitor Azure Relays including Hybrid relays along with analytics. Detect HTTP errors, CPU time, Garbage collection and health of the Azure Web Apps. -
33
Relay
RelayChain
RELAY is a multi cross-chain platform developed to bring BaaS (Bridging as a Service) to help the often fragmented DeFi liquidity space. What is really unique to our bridge is that when a new ecosystem is created, our bridge connects that asset and ecosystem to all the other ones we support. At launch we currently support bridging to Ethereum, BSC, Avalanche, Polygon (Matic), and Heco — with more coming soon. Relay's bridges were first to introduce the bridge gas token faucet to Defi where the bridge itself airdrops the native gas token to new users to reduce friction for people starting out on new chains. We have built many products during our tenor in DLT but during the last 6 months and after completing the first brdige to Avalanche we realized that safe and secure briding will be a corner stone of DeFi and we dropped everything to bring this reality to our users. -
34
PageGate
NotePage
PageGate is an SMS messaging server application that sends SMS and text messages to: mobile phones, cell phones and other wireless devices. Messages can be sent a variety of different ways including: networked computers, e-mail, Internet web pages, command line executables, text files, a serial port, and from within other applications. Messages can be sent to the telecom provider via: the Internet (SNPP, WCTP, SMTP), modems (TAP, UCP, GSM, TONE), or direct serial connections (TAP). PageGate is a high capacity software application, with built in redundancy and fail over capabilities ensuring that urgent text messages are sent in a timely manner. NotePager Pro sends text or SMS messages to wireless devices, mobile phones, and cell phones using an easy to use desktop application. NotePager Pro sends SMS messages or text messages through an Internet connection, modem or a cellular modem.Starting Price: $250 one-time payment -
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GFI FaxMaker
GFI Software
GFI FaxMaker is a leading fax server that provides digital faxing without the need for traditional equipment. Users can send and receive faxes electronically through a web interface, email or integrated application from any location, on any device. Send and receive faxes from a computer, tablet or smartphone. Fax using email (such as Microsoft Exchange or Gmail) or a web interface. Send faxes directly from applications using APIs and print-to-fax. Ensure faxes reach the right recipients with automatic inbound routing via email. Save time and resources compared to manually transmitting with a fax machine. Reduces the risk of confidential faxes being mis-dialed, lost or read by unauthorized individuals. Uses faxing protocols, which are more secure than email. Provides security features such as Active Directory and data encryption. Enables you to back up and maintain an archive of all fax communications.Starting Price: $109 one-time payment -
36
Eudora Internet Mail Server
Eudora Internet Mail Server
Completely rewritten relay restrictions with an easier to use interface that gives finer control over relay security. New domain name resolver (DNR), EIMS now has it's own DNR, which works around bugs in the Open Transport DNR and performance problems with the OS X DNR. The new DNR does not currently support non-recursive DNSs. SMTP Submit port, this is a second SMTP port running on TCP port 587 by default. It currently works exactly the same as the standard SMTP port. This is handy for clients that are stuck behind an ISP that blocks port 25 access. Sending Setup option for maximum recipients per message. Expand SMTP Addresses option, you can now turn this off, with EIMS 3.1 and earlier it was always on. The SMTP server (both port 25 and 587) now reports Telnet connections and connections that look like port scans (connections where no data is sent and it doesn't time out).Starting Price: Free -
37
Reson8
Unique Computer Systems
Reson8 SMS. Reson8 Messaging Server is a complete text Messaging solution enabling organizations to provide SMS messaging facilities to their personnel and corporate information systems using existing messaging infrastructure and line of business applications. Reson8 Messaging Server runs on the latest Windows, and Linux platforms. The system provides multiple channels, GSM Modem, HTTP or SMPP, for broadcasting messages. Reson8 features. A Network or GSM Modem based 2-Way SMS solution for sending and receiving messages from employees and customers. Message processing infrastructure to allow Client to operate a Short Message Service directly between Client's IP network and GSM mobile phones. A middleware system to receive and process SMS requests, "pull messaging" from mobile phones. The messaging routes can easily and quickly switch between the GSM, IP Gateway, or SMSC channel to send messages using different transports. The transports can be selected programmaticallyStarting Price: $165 per user per month -
38
Lokinet
Lokinet
Lokinet is a decentralized onion router that enables anonymous internet access by leveraging the Oxen service node network as relays, providing market-based Sybil attack resistance through the Oxen blockchain. It supports web browsing, onion-routed real-time voice communications, and other applications without requiring specialized software or custom patches. Unlike Tor, Lokinet operates on the network layer, allowing it to onion-route any IP-based protocol, including TCP, UDP, and ICMP, facilitating activities such as media streaming and video conferencing. Lokinet's infrastructure is built on the Low-Latency Anonymous Routing Protocol (LLARP), designed to address issues present in other networks like Tor and I2P. The Oxen Name System (ONS) provides human-readable, globally unique mappings to cryptographically secure long-form .loki addresses, stored and indexed on the Oxen blockchain. Lokinet clients are available for Windows, Linux, and macOS.Starting Price: Free -
39
Amethyst
Amethyst
Amethyst brings the best decentralized social network to your Android phone. Just insert your Nostr private key and start posting. Nostr is the most decentralized social network on the internet. Instead of a single website, it’s a network of thousands of users posting to each other's relay servers that can all interact with one another, seamlessly.Starting Price: Free -
40
Migomail
Migomail
Using an SMTP relay service like Miogmail is the simplest way to get started sending marketing and transactional emails. Send emails as per specific action or send series based bulk email relentlessly. Design creative customize email templates using drag-drop editor or use readymade responsive template. Security is Security is first priority, secure email infrastructure integration with SSL, DKIM, DMARC, SPF, SSL, TLS. Increase your email delivery with advanced management tools and Dedicated IP address. Create professional-looking personalized transactional, promotional and newsletter email. Utilize transactional/promotional SMTP or SMTP API to send bulk email. -
41
Relay
Boomtown Network
Relay makes it simple to sell, activate and service business technology products at scale. With a single Smart Inbox, an integrated knowledge base and seamless collaboration, your team is more efficient and can focus on helping customers instead of dealing with multiple and disconnected workflows. It’s time for a system that gets smarter every time you use it. Relay uses machine learning and universal technology data to drive intelligent automation that creates more powerful agents while reducing the number of questions they get from customers. Who said you can’t be personal at scale? Let your customers talk with you however and wherever and give your agents the complete context they need to respond quickly and treat every customer as an individual, not a ticket.Starting Price: $200.00/month -
42
PickPro WCS
ScottTech
Keeping track of your inventory helps to eliminate inefficiencies. Hospitals need medical equipment, retail stores need clothes, and automotive centers need parts. That entire inventory has to be accounted for every day to ensure those respective industries have the necessary equipment, clothes, and parts they need to fulfill orders. ScottTech Integrated Solutions’ flagship product, PickPro warehouse management software (WCS/WMS) was developed specifically for this process. Our warehouse management software (WCS/WMS), also known as PickPro WCS/WMS, is a software system that manages inventory and controls both operators, orders, and automation equipment inside the four walls of a warehouse or distribution center. It acts as a traffic cop would in the middle of a busy intersection. The software talks to the hardware and relays directions to it. It keeps an inventory of all of the storage devices and relays instructions to operators. -
43
AgentWebhook
AgentWebhook
AgentWebhook is a secure webhook relay built for pull-based delivery. Instead of exposing public endpoints, external services like Stripe, GitHub, Shopify, or Slack send webhooks to AgentWebhook. Your environment then pulls payloads securely over HTTPS when ready. This removes the need to open inbound ports, configure reverse proxies, or expose automation servers to the internet. Designed for n8n, OpenClaw, Zapier, internal workers, and private automation environments, AgentWebhook gives you control over timing, retries, and processing. Includes REST API and CLI access, with built-in deduplication. AgentWebhook is ideal for teams running Docker, VPS, or firewall-restricted infrastructure who want secure, controlled webhook ingestion without public exposure.Starting Price: $29/month -
44
Whiteboard Fox
Springbok Solutions
Simple online whiteboard. Share a virtual whiteboard in real-time using any modern web browser. Just email a link to the web page to let others view and edit your whiteboard. Changes you make are relayed to other participants within a few seconds. Use pinch-to-zoom gestures and your tablet's stylus pen if available. -
45
Doble PowerBase
Doble
Doble PowerBase™ (PowerBase) is the premier application for administrators to manage and report on protection asset testing, settings, maintenance and engineering records. It helps simplify NERC PRC-005 compliance and trending. PowerBase lets you organize and consolidate test and settings data from disparate applications, spreadsheets and files. Use PowerBase to store, trend and report on relay testing data from software programs such as Doble RTS™ and Protection Suite. You can also track maintenance on CTs/VTs, breakers, transformers, batteries and any other asset. PowerBase uses import and export modules for data transfer with other systems and testing tools. Customize dashboards for snapshots of key testing and maintenance performance indicators needed for your compliance officers, supervisors, technicians and additional stakeholders. ata storage system for relay test, settings, maintenance and engineering records. -
46
OutboundSMTP
OutboundSMTP
DKIM Signing improves the inbox placement of mailbox providers like Gmail, Office365. Multiple Servers in the USA and Europe for increased reliability. No more headaches of managing and maintaining your own email server and IP reputation. Create SPF and DKIM records for your domain names, no prior experience required. If you are suffering from an IP blacklisting our SMTP relay service can solve your reputation problems. 24×7 technical support via phone, chat or email. We are here to ensure your mail gets delivered. you’ll be able to deliver your mail reliably to the inbox. We optimize our sending routes and closely monitor our IP reputations to ensure you the best possible service. We have a Zero Spam Policy that allows us to block or restrict messages that would damage our reliability or the reputation of our customers. You may send from an unlimited number of “From” addresses or domains after you have verified your domain ownership via DNS.Starting Price: $4 per 2,500 messages -
47
AutoSend
AutoSend
AutoSend is a lightweight, cloud-based email delivery platform built to send and track transactional messages (like magic links, verification codes, and confirmations) and marketing campaigns with reliable deliverability and strong inbox placement; it provides a simple RESTful Email API with SDKs for multiple languages, SMTP relay support, and webhooks for event-driven workflows that let developers integrate email into apps quickly and reliably. It also offers tools for reusable templates, contact lists, and segmentation, campaign creation, email automations, real-time logs, deliverability analytics, and engagement tracking so teams can monitor delivery status, opens, clicks, bounces, and suppressions. AutoSend integrates intuitive dashboards that modernize both developer and marketer workflows with features such as migration support from other providers, dynamic suppression lists, personalization, and automation builders, helping organizations streamline email communication.Starting Price: $1 per month -
48
SendHealth
SendHealth
We generate an extensive report on sending IP, domain, their blacklist data, Content spam score, DNS records alignment for inboxing your emails. Once you have sent the email, start the diagnosis and we generate the report for you to understand and debug your email lords. Use your email marketing tool, ESP, API, or your GSuite/Zoho workspace to send an email to the recipient provided by us. The blacklist looks for domains in the email body that have been a known source for spammers. These domains will not be just in an initial link but in the final redirected link too. RBL and DNSBL are used to identify whether the IP of the sending server is an open relay that has been used by spammers or is by an ESP that allows spammers to use their infrastructure. -
49
Netmaker
Netmaker
Netmaker is an open source tool based on the groundbreaking WireGuard protocol. Netmaker unifies distributed environments with ease, from multi-cloud to Kubernetes. Netmaker enhances Kubernetes clusters by providing flexible and secure networking for cross-environment scenarios. Netmaker uses WireGuard for modern, secure encryption. It is built with zero trust in mind, utilizes access control lists, and follows leading industry standards for secure networking. Netmaker enables you to create relays, gateways, full VPN meshes, and even zero trust networks. Netmaker is fully configurable to let you maximize the power of Wireguard. -
50
Digital Florists
Digital Florists Ltd
Our mission is to give florists the freedom to focus on what they love most — creating beautiful arrangements and delighting their customers. Digital Florists was born from a unique partnership between a florist who understands the challenges of floristry and a software developer with a passion for building practical, user-friendly tools. Together, they designed software that simplifies operations, allowing you to spend more time doing what inspired you to become a florist in the first place Plan and route deliveries with ease. Create delivery runs, send them directly to the driver’s phone, and open with your preferred Maps app. Share delivery pictures in real time to keep everyone informed. Connect your website seamlessly to Digital Florists. Manage your Relay Orders in one place, and integrate with popular payment providers and couriers for a streamlined workflow.Starting Price: £75/month
