AI · alternatives · 2026

24 alternatives to Thunderbird AI Email Assistant

Email-assistent for thunderbird – www.zanteres.com

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.

1. 1
   Boomerang Respondable▲687

   Write perfect emails with Artificial Intelligence

   2016 · boomeranggmail.com · its alternatives →

2. 2
   Shortwave AI Email Assistant 2.0▲214

   The ultimate search, analysis, and productivity companion

   2024 · shortwave.com · its alternatives →

3. 3
   Thunderbird 115 Supernova▲175

   Make email easier

   2023 · thunderbird.net · its alternatives →

4. 4
   EzMail.AI▲115

   Reply to emails 10X faster with pre-filled drafts by AI

   2023 · its alternatives →

5. 5
   Ovy▲268

   One click AI-generated email replies for Gmail

   2022 · chromewebstore.google.com · its alternatives →

6. 6
   Sendbird AI agent for customer service▲544

   Delightful customer experiences with omnichannel AI

   2025 · sendbird.com · its alternatives →

7. 7
   Free AI Email Assistant▲121

   Forward, add context, generate 👉 no more boring replies

   2024 · its alternatives →

8. 8
   Jason AI▲470

   Write and respond to your business emails with ChatGPT

   2023 · reply.io · its alternatives →

9. 9
   Revo AI Email Assistant▲338

   AI with accurate replies that tackle the next-step tasks

   Feb 2026 · revo.ai · its alternatives →

10. 10
    AI Sales Email Assistant by Reply▲342

    Generate human-like emails and follow-ups with GPT-3

    2021 · reply.io · its alternatives →

11. 11
    MailBunny.ai▲86

    Email based AI assistant, collaborate, summarize & more

    2023 · its alternatives →

12. 12
    AIMail▲51

    Your AI email assistant for faster email communication

    2024 · its alternatives →

13. 13
    Shortwave AI Assistant▲163

    Your AI-powered executive email assistant

    2023 · shortwave.com · its alternatives →

14. 14
    FranzAI ▲106

    The free AI email assistant

    2024 · gpt.franzai.com · its alternatives →

15. 15
    AI Emailyfree tier, from $14.99/mo▲165

    Your AI inbox that writes like you + replies on autopilot

    Jul 2026 · aiemaily.com · its alternatives →

16. 16
    AI Mail Assistant▲63

    Generate, translate, summarize & improve emails

    2023 · chatgptservices.app · its alternatives →

17. 17
    Mailr - AI Email Writer▲133

    Write and reply to emails using ChatGPT

    2023 · mailr-ai.com · its alternatives →

18. 18
    Langchain AI Email Assistant▲164

    The prototype of ambient agents

    2025 · agentinbox.ai · its alternatives →

19. 19
    TextCraft AI▲181

    Smart inbox, smart emails - AI at your service

    2023 · chromewebstore.google.com · its alternatives →

20. 20
    Spark +AI▲181

    Your email productivity, supercharged with AI

    2023 · sparkmailapp.com · its alternatives →

21. 21
    Email AI by Snov.io▲190

    Generate reply boosting emails in seconds

    2023 · snov.io · its alternatives →

22. 22
    EzMail.AI Extension▲84

    ChatGPT for Gmail Chrome extension that generates emails

    2023 · its alternatives →

23. 23
    GMPlus▲154

    Transform your gmail communication with ChatGPT AI

    2023 · gmplus.io · its alternatives →

24. 24
    Auto-Gmail▲132

    AI to draft answers to all your inbound emails

    2023 · tinymagic.app · 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 →