Dev tools · alternatives · 2026

24 alternatives to Thunderbird Appointment

Free Your Inbox

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Thunderbird 115 Supernova▲175

   Make email easier

   2023 · its alternatives →

2. 2
   Mailbird▲111

   The best email client ever that syncs and unifies your life.

   2015 · its alternatives →

3. 3
   Meetingbird for Gmail▲333

   View your calendar and schedule meetings right from Gmail

   2017 · its alternatives →

4. 4
   Meetingbird▲388

   Supercharge your team's meetings

   2016 · its alternatives →

5. 5
   Meetingbird Meet▲228

   The easiest way to schedule a meeting with anyone

   2017 · its alternatives →

6. 6
   Meetingbird for Google Calendar▲225

   Superpowers for Google Calendar

   2017 · its alternatives →

7. 7
   Mailbird with Email Tracking▲121

   Email made easy and beautiful

   2020 · its alternatives →

8. 8
   Mailbird for Mac▲375

   Email the way you like it, now on Mac

   2024 · its alternatives →

9. 9
   Mozilla Thunderbird Backup Tool▲66

   Advanced solution to backup and migrate Thunderbird emails

   2022 · its alternatives →

10. 10
    Mailtrack.io▲282

    The best email tracking solution I've found. Free

    2014 · its alternatives →

11. 11
    Spark for Mac▲1,057

    Beautiful and intelligent email app

    2016 · sparkmailapp.com · its alternatives →

12. 12
    Twobird▲209

    Your emails, thoughts & to-dos all in one inbox

    2019 · its alternatives →

13. 13
    TabMail▲69

    An agentic email assistant for iOS and Thunderbird

    Apr 2026 · tabmail.ai · its alternatives →

14. 14
    Spark▲369

    A smart, fast and free email client for iPhone

    2015 · its alternatives →

15. 15
    All-new Spark▲354

    Smart. Focused. Email

    2022 · its alternatives →

16. 16
    SlideMail▲97

    An email app that can think

    2015 · its alternatives →

17. 17
    Cloudmagic▲123

    Compete Your Work Right From Your Email Inbox

    2014 · its alternatives →

18. 18
    Morning Mail▲302

    A new way to manage your mail. Tinder for email.

    2016 · its alternatives →

19. 19
    Sendbird▲227

    The simplest chat & messaging solution for your app

    2016 · its alternatives →

20. 20
    Letterbird▲134

    A free contact form on the web that’s good enough

    2024 · its alternatives →

21. 21
    Mailplane 4▲101

    The best way to use Gmail on your Mac

    2018 · its alternatives →

22. 22
    Thunderbird AI Email Assistant▲10

    Email-assistent for thunderbird – www.zanteres.com

    2025 · its alternatives →

23. 23
    Spark for Android▲296

    The much beloved email client now on Android

    2019 · its alternatives →

24. 24
    Inbox AI▲201

    AI-Powered Personal Productivity

    2024 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →