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AI · alternatives · 2026

24 alternatives to Nylas CLI

Email, calendar, and contacts for AI agents

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

    World's first open source AI scheduling assistant

    2023 · cal.com · its alternatives →

  2. 2

    Create mailboxes and calendars that your AI agent owns

    Jun 2026 · nylas.com · its alternatives →

  3. 3
    April▲664

    Reach Inbox Zero by speaking with your email & calendar

    2025 · apps.apple.com · its alternatives →

  4. 4
    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 →

  5. 5
    Nylas▲6

    Communications APIs for Developers

    2019 · nylas.com · its alternatives →

  6. 6

    The prototype of ambient agents

    2025 · agentinbox.ai · its alternatives →

  7. 7
    Meet-Ting▲271

    Free AI assistant for email scheduling in early access

    Jan 2026 · meet-ting.com · its alternatives →

  8. 8

    The extensible, open source mail client.

    2015 · nylas.com · its alternatives →

  9. 9
    Nylas Pro▲375

    The extensible, open source mail app.

    2016 · nylas.com · its alternatives →

  10. 10

    Smartly plan & sync life in seconds on your messaging app

    2024 · its alternatives →

  11. 11

    Turn any email inbox into a native interface for AI agents

    Apr 2026 · blog.cloudflare.com · its alternatives →

  12. 12

    The most powerful and extensible email client

    2017 · nylas.com · its alternatives →

  13. 13
    FranzAI ▲106

    The free AI email assistant

    2024 · gpt.franzai.com · its alternatives →

  14. 14
    Mayday▲188

    Your AI scheduling co-pilot

    2023 · mayday.am · its alternatives →

  15. 15
    Astro▲67

    AI meets email for Mac, iPhone, and Android

    2018 · its alternatives →

  16. 16

    Email based AI scheduling assistant

    2025 · dule.ai · its alternatives →

  17. 17

    Modern developer platform for email, contacts, & calendar

    2015 · nylas.com · its alternatives →

  18. 18

    Connect your Mac's Mail, Calendar, and more to AI

    Apr 2026 · claunnector.com · its alternatives →

  19. 19
    Decoded▲114

    AI assistants you can email for deep research and more

    2025 · bubble.io · its alternatives →

  20. 20AE

    Hey HN, we're Haakam, Michael, and Adi. We're building AgentMail (https://agentmail.to/), an API to give AI agents their own email inboxes. We’re not talking about AI for your email, this is email for your AI. We started building email agents because they can converse with users in their inboxes, automate email-based workflows, and authenticate with third-party applications. Given these unique capabilities, we think email will be a core interface for agents. But we were building on top of Gmail, which was a struggle: poor API support, expensive subscriptions, rate limits,…

    2025 · chat.agentmail.to · its alternatives →

  21. 21
    Scheduled▲102

    Open source AI calendar scheduler that lives in Gmail

    Mar 2026 · tryscheduled.com · its alternatives →

  22. 22
    Qex AI▲99

    Smart email capable AI assistants

    2023 · qexai.com · its alternatives →

  23. 23

    Generate, translate, summarize & improve emails

    2023 · chatgptservices.app · its alternatives →

  24. 24

    Team CRM on Gmail/Outlook & Slack always up-to-date using AI

    2019 · its alternatives →

Also compare

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 →