Thunderbird Alternatives (September 2025)

Email made easy and beautiful. Manage multiple accounts with the best email client for Windows 2024. Download the #1 email client program free Now.

BlueMail is a modern, mobile and desktop, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP, Exchange,POP3.

Fast email client with full Gmail, Hotmail and other services synchronization. Best replacement for MS Outlook or Thunderbird. Free version for Home users.

Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more.

Discover your new all-purpose inbox. Write emails, create notes, set reminders and assign to-dos—your everyday tools, in Twobird.

Postbox is the power email app for busy professionals, like you.

Sylpheed - Sylpheed はシンプル、軽量かつ高機能で使いやすい、無料のメールソフトです。Sylpheed は Windows から Linux まで様々なプラットフォームに対応しています。

Mailtrim provides secure Free email client software with its unique team collaboration Feature and is designed to serve the mailing needs of all business

Zimbra: A Cloud-Hosted Collaboration Software and Email Platform That Integrates With Proprietary Business Solutions

Sign in to your Outlook.com, Hotmail.com, MSN.com or Live.com account. Download the free desktop and mobile app to connect all your email accounts, including Gmail, Yahoo, and iCloud, in one place.

EssentialPIM helps you manage your life with powerful tools for email, calendar, contacts, notes, password entries and tasks.

Canary learns how you email. It can write your emails, surface what needs attention, silence spam, and much more. Say hello to your Inbox Copilot.

Mailbutler is the email software extension plugin for Apple Mail, Gmail, and Outlook that helps you stay productive and professional.

You'll never look at email the same way again. Eight years ago, we first reimagined email. Now, we've done it again. Request early access today.

Hiri is the best email client for Managers on Windows, Mac and Linux.

TypeApp - The best Android and iOS email app ever created for mobile devices. Fast, simple and easy, TypeApp is the best email app for Android and iOS

Feature-rich browser for productive working on the web. Tab manager, multi-account sign-in, unified search, workspaces and more

Take back control of your email with this easy-to-deploy mail server in a box.

K-9 Mail is an open source email client focused on making it easy to chew through large volumes of email

EverDesk combines the best features of an Email Client, File Manager, Address Book and Calendar into one integrated interface, making it the most unique and comprehensive personal information manager on the market

Newton supercharges your email with powerful features like Read Receipts, Send Later, Snooze & more. Works with Gmail, Google Apps, Exchange, Outlook, Office365, iCloud, Yahoo & IMAP.

Tuta guarantees your data stays private for free & without ads. Quantum-resistant encryption makes Tuta the best secure technology solution to protect your privacy.

Gmail, Outlook, and Apple got complacent and took their eye off the ball. Then along came HEY.

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest.

Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

Clean and organize your messy mailbox with a bulk email cleaner app - Clean Email. Choose your email provider to start cleaning.

Reliable, secure, extensible, and customizable mail server software platform made for on-prem and cloud-native deployment; easily scalable, smart licensing.

It’s a web browser. But fun. It comes with a bunch of clever features built-in. It’s super flexible and does not track you. Get the Vivaldi browser for desktop, mobile, and your car!

RainLoop Webmail - Simple, modern & fast web-based email client.

Easy to Install and manage, carrier class Mail Server Software with modern fast WebMail interface, spam protection and much more.

Keep your team in sync – Attach emails to cards and reply from Trello. Cards move when you get a response. 100k+ installs. Free!

A powerful email server that blocks 99% of junk emails. It also enables encrypted emailing with large sized file sharing and helps in preventing IP leakages

Download a free trial of BlackBerry Hub+ apps for Android phones running Lollipop 5.0 or higher. Boost productivity with BlackBerry Hub+ Inbox, Calendar, Launcher and more.

The MDaemon Email Server is trusted by businesses in over 140 countries to provide a secure, reliable, and affordable alternative to Microsoft Exchange or Microsoft 365. IT professionals recommend MDaemon as an easy-to-use, reliable, and secure mail server that does not require expensive administration or impose high per-user costs. On-premise or hosted email deployment.

Ad-free Business Email Hosting with a clean, easy-to-use interface. Integrated Business Calendar, Contacts, Notes, Tasks. Free for up to 5 users.

The smarter, faster way to clean out your inbox. Remove hundreds (or even thousands) of messages from your inbox all at once. You'll be amazed at how fast you can approach Inbox Zero!

Secure Windows or Linux mail server that includes chat, calendaring and contacts and offers a cost-effective alternative to Microsoft Exchange.

Emails, calendars, contacts, tasks, chat and more

Choose from Desktop, iOS, Android, or let us email you a mobile download link.

Create your own marketing strategy Send in seconds Send & analyze email marketing campaigns. Start your free plan with unlimited credit. Free for a lifetime! Sign up for free See pricing INBOX is an email marketing tool with more powerful features and flexibility than any other Easy To Use Create a campaign in | Create email marketing your subscribers will admire INBOX

Looking for a great Gmail app for Mac? Connect your Calendar, Keep and Contacts within one app.

Business communication and team messaging software. Unlimited users, direct and group messages, and unlimited message history.

Windows mail server software with webmail, caldav, carddav, antivirus, spam filtering - Fast, secure email server software for windows. Download free mail server trial.

Forget searching through junk, spam, and unsolicited emails to find what you actually need. Bulletproof turns your open-access inbox into a permission-based one.

Fast, secure, and sustainable email services provided by email professionals. Powerful Email and Domain Hosting for businesses and organizations.

Inbox Zero is your AI personal assistant for email and the quickest way to reach inbox zero. Automate your email, bulk unsubscribe from newsletters, block cold emails, and view your email analytics. Open-source.

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases. MantisBT has been installed on Windows, Linux, Mac OS, OS/2, and others. It is released under the terms of the GNU General Public License (GPL).

Shared inbox for a transparent workspace—Zoho TeamInbox lets you manage team emails efficiently, gives you clutter free inboxes and helps attain Inbox Zero easily.

Easily block distracting websites and apps on any device. The original and best website blocker, Freedom helps you be more focused and productive.

totle is the all-in-one add-in solution for Outlook that helps you boost your email productivity and enhances your overall work experience.

Cut your team's email management time in half & get started on the road to a cleaner inbox and more productive day with SaneBox. Start your free trial now!

OX Cloud Email - Easy, Fast, Secure - Powerful email built for business

MaxBulk Mailer is a bulk email software and email marketing tool for macOS and Windows that allows you to send out customized press releases, price lists or any kind of text or HTML messages to your customers.

Our email contact management software Chaos Intellect can share your data across your network, organize your telephone book, appointment calendar and task list. Easy to work with and no expensive server software required!

Exchange business-class email helps increase user productivity while protecting your data. Get it as a hosted service or run it on your servers.

10K+ teams trust Hiver to streamline shared inbox management and run multi-channel help desks from their Inbox. Try Hiver free for 7 days.

Polymail is the best email platform designed to make the work-life of any professional much easier. Offering tools and features that benefit you. Visit us now!

Mailman is an email assistant that helps you get your inbox to zero. It acts as a tool for time management and productivity by shielding you from unimportant emails.

Email, group chat and tasks for productive teams. One app for all your internal and external communication. Work management at its best. Try it free!

Secure hosted email with custom domain. Shared calendars, chat, storage, documents & apps. The only solution integrated and working together in one screen.

Free desktop project scheduling and management app with Gantt chart for Windows, Linux and macOS

Get up to date contact information with a simple & free cross-platform contact manager app that sync across multiple accounts and devices automatically.

Host your professional email on a secure, privacy-guaranteed, and ad-free email hosting service built-in with features like email marketing services can do.

Aryson Thunderbird Backup Tool is a magnificent & risk-free utility that allows you to take email backup from Thunderbird and save Thunderbird Backup Emails to External Hard Drive.

Cuckoo Sandbox is the leading open source automated malware analysis system.

Enterprise-strength tool for automating both mass-mailing and single email processing jobs.

Free Email tracking for Gmail & Google Inbox without branding. Real-time notifications and link tracking. Works in Chrome, Firefox and Opera.

Create an email signature with MySignature for major email clients such as Outlook, Gmail, Apple Mail, Yahoo Mail, and more

Share Microsoft Outlook calendar and contact folders

More than 250,000 professionals use Right Inbox every day to increase their email productivity. 12 powerful features to supercharge your Gmail account.

Email Mailing List Manager. Easy To Use and Extendable

Award Winning Mail Backup / Archiving & Migration Tool for Mac & Windows PC. Mac Mail, Outlook for Mac , Office 365, Thunderbird, Postbox, Gmail, Yahoo, gmx.de.

Tabby is a free and open source SSH, local and Telnet terminal with everything you'll ever need.

Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Cost-effective, secure hosted email: mailboxes, calendar and address book

In our contact management app you can store fast and easily name, phone numbers, birthdays, address, company name, city, mobile numbers, insurance and loan info, e-mail addresses.

Best box office platform for reserved seating events, robust multi-venue options for all seating types makes ThunderTix the

Cold email software that is easy to use, with automated follow-ups when there is no response. Customizable outbound email tracking software for sales.

Office 365 Backup Solution to backup Microsoft Office 365 cloud emails to PST, EMLX, MSG, EML files and restore Office 365 Mailboxes from backup.

Set up email forwarding in seconds and start receiving and sending emails with your domain name. Absolutely free. No registration. 24/7 Support.

Cigati GoDaddy Email Backup Tool is the most powerful and advanced utility that can help users to Backup GoDaddy Emails to a Local Hard Drive, and Export Emails to Office 365, Gmail, Yahoo, Outlook, PST, PDF, MBOX, MSG, etc.

HCL Notes is the email client software that supports social collaboration. Integrates enterprise applications in a single workspace with agile security from the core.

Cleanfox is the fastest Email Cleaner for Gmail, Outlook, and More. Clean your inbox efficiently and stop spam emails.

The software solution designed to drive software development Bugzilla lets you plan, organize and release software on your own teams' schedule...

DataVare Hotmail Backup tool takes backup of Hotmail account Emails with attachments, Contacts, and Documents etc. Windows Hotmail Backup software converts all mailbox into PST, EML, MSG and MBOX file format.

Free email tracking trial! Instantly track emails. Find out when, where & how long recipients read your sent emails. Receive email message read receipts.

Gist is an all-in-one growth software that serves as a central source of truth through the entire customer journey. Get started for free!

Cigati Yahoo Email Backup Software is a risk-free utility to take the Backup of Yahoo Mail to Computer and Save Yahoo emails to PDF, PST, MSG, MBOX, EML file formats and Various Other Email Clients.

Download Yahoo Backup Tool latest version for Windows free to try. Yahoo Backup Tool latest update: July 1, 2022

Create, access and manage mail from all your emails accounts in one place. Add images, scan documents, create sketches and attach files using the handy Format B…

Mailfence is the only secure and private email service that gives you control. A free, interoperable encrypted email service protected by Belgian privacy law.

Automate Scheduling and Eliminate Back & Forth emails typically involved in finding suitable time slots.

HelpSite is easy-to-use hosted knowledge base software for creating an awesome support & FAQ site for your business. Get started for free!

Test new user signups, transactional emails, spam scores, and more. Get started on our free forever plan with unlimited email addresses and mailboxes.

The ultimate email marketing software and marketing automation platform that will not break your bank. Try Moosend for free!

Get more donations by embedding our optimized donation form, donate now button. Nonprofit donation software powering 80,000 organizations.

The easiest way to add authentication and user management to your application. API-first & purpose-built for developers. Get started for free.

Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

Aryson Gmail Backup Tool is a professional Gmail Email Backup Software helps to backup Gmail Accounts into multiple file formats and email clients.