Compare the Top Email Clients as of November 2025

What are Email Clients?

Email clients are software applications used to send, receive, organize, and manage email messages on desktops, mobile devices, or web browsers. They provide user-friendly interfaces to access multiple email accounts, support features like contact management, calendar integration, message filtering, and offline access. Email clients can be standalone applications or web-based. They often include security features such as spam filtering, encryption, and phishing protection to safeguard communications. Email clients are essential tools for personal and professional communication, enhancing productivity and organization. Compare and read user reviews of the best Email Clients currently available using the table below. This list is updated regularly.

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    Proton Mail

    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.
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    Starting Price: $6.99/user/month
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  • 2
    Mailtrim

    Mailtrim

    Mailtrim

    Reinventing email to live in your inbox! A powerful standout mail tool to send and receive organised email communications. Sync all your emails Manage all your emails and contacts from multiple accounts easily in one unified inbox. Best free email client. Highly customisation. Give a new look to your email with the finest outlook alternative, the mailtrim. Choose from a ton of customizations to send a unique type of business email. Best free email client. Secure and private. Have round-the-clock control on the emails you send and receive! Acquire this secure email client and apply pgp encryption to hide the contents of your emails. Sophisticated and slick UI. Have high user-experience with a minimally designed interface. Find everything fast! Have this best free email client for personal and professional use that has an easy-to-navigate immersive user interface. The quick to use email client for windows and mac allows the users to send smart emails.
    Starting Price: Free
  • 3
    Helpwise

    Helpwise

    Helpwise

    Shared Inbox for your Team Email, SMS & WhatsApp accounts. Sharing email account login among team members is not scalable. Helpwise is an easy to use shared inbox for your team email accounts like help@, sales@, jobs@ etc. As business grows, it becomes a struggle to manage customer, sales or internal emails (billing, hiring) across the company. And, then we make a blunder by sharing email logins among team members. We understand the chaos that it creates because we have been through the same pain during our previous gigs & businesses. So, this is exactly why we built Helpwise - the shared inbox that really works! We all love Gmail, Outlook & other awesome email clients. So, we have made sure that Helpwise feels as easy as these common email services. Basically, you won't miss them here. Every team member will get own separate login to access same email address. So, no more password sharing. Better security with higher productivity!
  • 4
    Loop Email

    Loop Email

    Loop Email

    Its hard being productive when you spend half your time reading emails, and the other half flipping between platforms to tell your team about said emails. You need a single app thats going to help you move faster and keep everything and everyone on the same page. As a collaboration hub, Loop Email connects your team so you can chat, exchange files, and manage shared inboxes easily. It brings messages, emails and files in one app. Loop Email helps teams connect, collaborate and communicate all in one place. Available for Mac, Windows, iOS & Android.
    Starting Price: $8 per user per month
  • 5
    SmarterMail

    SmarterMail

    SmarterTools

    SmarterMail is the ideal Microsoft Exchange alternative. It’s the only business email server on the market that offers native support for Exchange protocols: MAPI, EWS, and EAS, without requiring any additional software or plug-ins for Microsoft Outlook or other desktop or mobile clients. It delivers all the features of Exchange at a fraction of the cost. SmarterMail also includes audio/video group chat and Online Meetings for team collaboration at no extra charge. Its newest feature, the SmarterMail Marketplace, enables seamless integration with platforms like OnlyOffice, Collabora, and AI tools such as OpenAI’s ChatGPT. Available for both Windows and Linux, SmarterMail has lower hardware requirements, superior stability, and reduced maintenance costs. It’s the perfect solution for businesses of any size or industry seeking Exchange-level functionality, without the high costs.
    Starting Price: $500.00/one-time
  • 6
    MailAI

    MailAI

    MailAI

    MailAI is an AI-powered email-automation platform that deploys personal AI agents that run 24/7 in secure, isolated sandboxes to manage, respond to, and automate workflows in your inbox and calendar. Your agent can auto-respond to customer inquiries, monitor invoices via Stripe, coordinate meeting schedules, generate daily summaries of unread emails, and carry out custom tasks, all triggered by simple plain-English instructions. Built for enterprise-grade data security, MailAI integrates deeply with tools like Gmail, Google Calendar, and Stripe, and supports conversational interaction where you can ask your agent to “find all emails from Sarah about the Q4 deadline” or “schedule a check-in meeting and send the invite.” The system includes powerful features like inbox management, invoice and task tracking, email templates, performance-based workflows, and built-in compliance protections (CASA-verified sandboxes, encryption, GDPR/CCPA support).
    Starting Price: $25 per month
  • 7
    Zimbra

    Zimbra

    Synacor

    Zimbra 9 : Extensibility for Collaboration Superheroes! Users move seamlessly between desktop, mobile and tablet browsers with a consistent email and collaboration experience. Designed for extensibility and features best- in-class, out-of-the-box integrations with Slack, Dropbox and Zoom, with many more underway. Zimlet framework and APIs let you customize Zimbra to meet your specific requirements. Zimbra’s dependable server infrastructure for the security, privacy and data sovereignty Zimbra customers expect. Expect an easy upgrade process moving to Zimbra 9 — with no data migration. Zimbra 9's modern, responsive UI is built on Zimbra's dependable server infrastructure for the security, privacy and data sovereignty you expect from Zimbra. Unlike competitors with closed platforms, Zimbra 9 is flexible and extensible. Break free from Microsoft and Google and integrate with the 3rd party collaboration services you use today—Slack, Zoom, Dropbox and more.
    Starting Price: Varies
  • 8
    GroupWise

    GroupWise

    OpenText

    GroupWise gives users a dynamic, flexible interface that’s intuitive and easily configured to conform to the organization’s requirements. GroupWise runs on cutting-edge data center technology providing modern email, calendaring, and contact management functionality. Create, view, and manage your tasks, appointments, and reminders via the GroupWise task management system. GroupWise provides convenient and centralized access to your contacts, groups, organizations and resources. Secure messaging gateway provides zero-hour antivirus and anti-spam protection on-premises or in the cloud. Bad things happen, but your email and collaboration data can still be safe and sound. Protect against data loss with enterprise-grade archiving. GroupWise provides robust messaging, calendaring, task management, and contact management with a web-based, on-the-go administrative dashboard.
  • 9
    IceWarp

    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
  • 10
    Kiwi for Gmail

    Kiwi for Gmail

    Kiwi for Gmail

    Kiwi enhances Gmail and makes Google Apps like Docs, Sheets and Slides work together seamlessly like a full-featured desktop office productivity suite. Use Gmail and Google's office suite outside the browser as a standalone application with powerful enhanced features. Gmail's a powerful application. The browser is a general-purpose tool. If you need to do serious work, here is your edge. Distinct from what Gmail uses in the browser, we designed a powerful engine that allows multiple accounts to be used together with 100% fidelity and no conflicts. It works with Google Drive, Docs, Sheets, and Slides as well. Redefine your inbox on the fly to see what's come in today, or the past 2 days, or past week. Further whittle those down to only emails marked Important with Google AI, Unread, Attachments and Starred. Combine them to keep your inbox limited to a short list of your most relevant emails. Need to see your other emails? All it takes is a click to mix it up or turn it off.
    Starting Price: $29.99 per year
  • 11
    AOL Mail
    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.
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