Growth · alternatives · 2026

24 alternatives to Contacts Inbox

Gmail CRM add-on to integrate Google Contacts & Stripe

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Contacts Inbox launched in 2021; newer entries below may have overtaken it.

1. 1
   Clearbit Connect▲716

   Rapportive on steroids. See data about contacts in Gmail.

   2016 · clearbit.com · its alternatives →

2. 2
   Streak 2.0 Contacts▲211

   CRM inside Gmail, now with contacts

   2016 · its alternatives →

3. 3
   Streak▲363

   CRM in your inbox - for Gmail

   2014 · its alternatives →

4. 4
   Inbox by Google▲1,147

   Next generation inbox

   2014 · google.com · its alternatives →

5. 5
   Interseller▲174

   Find an email, send a message, and sync your CRM in a click

   2017 · its alternatives →

6. 6
   FullContact for Gmail▲380

   Your Gmail Contacts. On steroids.

   2014 · its alternatives →

7. 7
   FullContact for Chrome▲211

   Context for your contacts without leaving your inbox.

   2017 · its alternatives →

8. 8
   Stripe for Gmail▲95

   Display customers Stripe information within inbound emails

   2015 · its alternatives →

9. 9
   Right Inbox▲163

   Superpowers for Gmail

   2019 · its alternatives →

10. 10
    InboxSDK▲508

    First usable API to write Gmail Apps for 1B active users

    2015 · its alternatives →

11. 11
    FollowUp Personal CRM▲205

    The personal CRM for Gmail

    2017 · its alternatives →

12. 12
    InboxPurge▲100

    The fastest way to a cleaner Gmail inbox

    2023 · its alternatives →

13. 13
    InboxCRM▲127

    Track your sales pipeline without leaving your inbox, free

    2023 · its alternatives →

14. 14
    Inbox Zero Tabs▲400

    Split inbox tabs for Gmail. 100% private. 100% free

    2025 · chromewebstore.google.com · its alternatives →

15. 15
    Inbox by Gmail Chrome Extension▲207

    Save links for later and share with one click

    2016 · its alternatives →

16. 16SE
    Signal – Edit emails in your Gmail inbox▲151

    2013 · trysignal.com · its alternatives →

17. 17
    Clean Inbox for Gmail™▲150

    A privacy-oriented Gmail add on against marketing email

    2024 · cleaninboxforgmail.com · its alternatives →

18. 18
    Gmail in the Gemini Era▲375

    Ask your inbox anything to get summaries, drafts, & more

    Jan 2026 · blog.google · its alternatives →

19. 19
    Asana for Gmail▲216

    Turn emails into tasks without leaving your Gmail inbox

    2017 · its alternatives →

20. 20OS
    Open-Sourcing InboxSDK (YC S11) – Build Apps in Gmail▲257

    Hi HN! We’re Aleem, Chris, Borys, Meichen and Zach from Streak (YC S11) and today we’re open sourcing our InboxSDK https://www.inboxsdk.com, which makes it easy to build apps for Gmail. Over 1.8B users spend their days in Gmail! Having your app built into the Gmail workflow is a better user experience and gives you great user retention. InboxSDK gives you a high-level, declarative API to insert your UI into Gmail without having to directly manipulate the DOM yourself. End users install a browser extension to use your app. The SDK can add UI to multiple areas of Gmail. For example,…

    2022 · its alternatives →

21. 21
    Signature by Salesflare▲220

    Automatically pull email signatures into Google Contacts ✨

    2018 · its alternatives →

22. 22
    Inbox When Ready▲116

    Protect your focus... hide your Gmail inbox by default

    2016 · its alternatives →

23. 23
    iMailer▲115

    Email for busy professionals

    2022 · its alternatives →

24. 24SC
    Stripe Customer Info inside Gmail▲56

    2015 · github.com · 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 →