AI · alternatives · 2026

Caspy is an AI assistant designed to help manage email communications. It uses artificial intelligence to streamline email-related tasks and improve productivity. The tool is intended for anyone looking to work more… 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. Caspy – AI Assistant for Emails launched in 2017; newer entries below may have overtaken it.

1. 1
   Caspy▲167

   AI assistant for your email 🤖📧

   2017 · its alternatives →

2. 2
   Cal.ai Email Assistant▲918

   World's first open source AI scheduling assistant

   2023 · cal.com · its alternatives →

3. 3
   Caspy▲8

   Your AI Assistant for Emails

   2017 · caspy.com · its alternatives →

4. 4
   Slashy▲474

   The AI assistant that does email for you

   Jun 2026 · slashy.com · its alternatives →

5. 5
   Shortwave AI Assistant▲163

   Your AI-powered executive email assistant

   2023 · shortwave.com · its alternatives →

6. 6
   Revo AI Email Assistant▲338

   AI with accurate replies that tackle the next-step tasks

   Feb 2026 · revo.ai · its alternatives →

7. 7
   Warmy.io▲417

   Boost your email deliverability with an AI driven algorithm

   2024 · warmy.io · its alternatives →

8. 8
   AI Emailyfree tier, from $14.99/mo▲165

   Your AI inbox that writes like you + replies on autopilot

   Jul 2026 · aiemaily.com · its alternatives →

9. 9
   MailBunny.ai▲86

   Email based AI assistant, collaborate, summarize & more

   2023 · its alternatives →

10. 10
    AIMail▲51

    Your AI email assistant for faster email communication

    2024 · its alternatives →

11. 11
    Folderly AI▲235

    AI-generated emails that hit the inbox and get replies

    2025 · generate.folderly.com · its alternatives →

12. 12
    Shortwave AI Email Assistant 2.0▲214

    The ultimate search, analysis, and productivity companion

    2024 · shortwave.com · its alternatives →

13. 13
    Lavender▲233

    A complete AI toolkit for amazing 1:1 emails in your inbox.

    2020 · lavender.ai · its alternatives →

14. 14
    Inbox AI▲201

    AI-Powered Personal Productivity

    2024 · its alternatives →

15. 15
    Mail AI▲70

    A powerful communications toolset powered by GTP3

    2022 · its alternatives →

16. 16
    CXassist▲136

    Put your inbox on autopilot with AI

    2023 · cxassist.io · its alternatives →

17. 17
    CalBot▲115

    Carly lets you create custom AI agents with 120+ integrations. Give each agent an inbox, instructions, and tool access for email, CRM, scheduling, research, and operations.

    2025 · calbotservice.com · its alternatives →

18. 18
    Sendster AI▲96

    AI enabled newsletter software for Amazon SES, SMTPs

    2023 · getsendster.in · its alternatives →

19. 19
    Letty▲88

    Craft perfect emails faster with your personal AI assistant

    2023 · useletty.com · its alternatives →

20. 20
    Free AI Email Assistant▲121

    Forward, add context, generate 👉 no more boring replies

    2024 · its alternatives →

21. 21
    FranzAI ▲106

    The free AI email assistant

    2024 · gpt.franzai.com · its alternatives →

22. 22
    Qex AI▲99

    Smart email capable AI assistants

    2023 · qexai.com · its alternatives →

23. 23
    BeC▲70

    Organize and prioritize your emails through AI

    2023 · bec-ai.com · its alternatives →

24. 24
    Lola AI▲116

    AI-powered emails in seconds

    2021 · 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 →