Growth · alternatives · 2026

24 alternatives to GMass

Send email marketing campaigns INSIDE Gmail.

GMass is an email marketing tool that operates directly within Gmail, allowing users to send campaigns and track responses without leaving their inbox. It enables automatic follow-up emails to recipients who don't… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. GMass launched in 2017; newer entries below may have overtaken it.

1. 1
   New Gmail▲935

   The new version of Gmail web

   2018 · blog.google · its alternatives →

2. 2
   Mailmeteor 2.0▲301

   Send auto follow-up emails with Gmail

   2022 · mailmeteor.com · its alternatives →

3. 3
   Signal – Edit emails in your Gmail inbox▲151

   2013 · trysignal.com · its alternatives →

4. 4
   Ugly Email▲421

   See if an email is being tracked before you open it in Gmail

   2015 · uglyemail.com · its alternatives →

5. 5
   Streak Mail Merge for Gmail▲146

   Send mass, personalized emails with automatic followups

   2021 · streak.com · its alternatives →

6. 6
   Shortwave▲299

   Email smarter & faster with a reinvented Gmail experience

   2022 · shortwave.com · its alternatives →

7. 7EE
   Easy Email Encryption inside Gmail (Alpha, Open-Source)▲170

   Manage sales and customer relationships directly inside Gmail. Streak is the CRM your team will actually use—integrated, smart, and loved by 750,000+ users.

   2013 · streak.com · its alternatives →

8. 8
   Pigeon for Gmail▲427

   Mail merge, auto follow ups, CRM inside your Gmail

   2021 · trypigeon.co · its alternatives →

9. 9
   Mailflow▲267

   Run your business from Gmail

   2020 · getmailflow.com · its alternatives →

10. 10
    Mailmeteor▲567

    Send hundreds of personalized emails with Gmail.

    2019 · mailmeteor.com · its alternatives →

11. 11
    Go Mail Merge▲98

    The easiest way to manage your email campaigns for Gmail

    2021 · gomailmerge.com · its alternatives →

12. 12
    If No Reply▲368

    Simple email automation that works for Gmail

    2016 · ifnoreply.com · its alternatives →

13. 13
    InboxSDK▲508

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

    2015 · inboxsdk.com · its alternatives →

14. 14
    Streak▲363

    CRM in your inbox - for Gmail

    2014 · streak.com · its alternatives →

15. 15
    Email Open Tracker for GMAIL▲126

    Keep an eye on your email opens

    2024 · its alternatives →

16. 16
    Mailflame: Outreach & tracking on Gmail▲9

    Complete your personalized outreach on Gmail in mins

    Jul 2026 · mailflame.cresstudio.com · its alternatives →

17. 17
    Streak.com - Do sales, support and bug tracking all inside Gmail▲306

    Manage sales and customer relationships directly inside Gmail. Streak is the CRM your team will actually use—integrated, smart, and loved by 750,000+ users.

    2012 · streak.com · its alternatives →

18. 18
    Gmail Transactional Email Relay by GMass▲79

    A free service to send transactional emails through Gmail

    2022 · gmass.co · its alternatives →

19. 19
    Email Comments▲120

    Add Google Docs like comments to Gmail

    2022 · emailcomments.com · its alternatives →

20. 20
    GMass▲203

    A beautiful mass email system for Gmail

    2015 · gmass.co · its alternatives →

21. 21
    Google Postmaster▲252

    High volume email tools from Google

    2015 · gmail.com · its alternatives →

22. 22
    SendgoMail▲88

    Email sending made easy & affordable for free

    2021 · sendgomail.com · its alternatives →

23. 23
    Email Parser & Analytics▲68

    Automatically adds your Gmail content to Spreadsheets daily.

    2018 · chromewebstore.google.com · its alternatives →

24. 24
    Streak 3▲208

    The "low-work" CRM inside Gmail

    2020 · streak.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 →