Growth · alternatives · 2026

24 alternatives to GlockApps 2.0

Next-level email testing and insights

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. GlockApps 2.0 launched in 2023; newer entries below may have overtaken it.

1. 1
   GlockApps▲98

   Test where your email will appear: Inbox or Spam

   2015 · its alternatives →

2. 2
   Mailwarm 2.0▲683

   The email warmup tool, upgraded for deliverability.

   Jun 2026 · mailwarm.com · its alternatives →

3. 3
   New Gmail▲935

   The new version of Gmail web

   2018 · blog.google · its alternatives →

4. 4
   Really Good Emails 2.0▲677

   Really good curated email design and code inspiration

   2019 · reallygoodemails.com · its alternatives →

5. 5
   Seamailer▲861

   Send marketing emails that bring results without limits

   2024 · seamailer.app · its alternatives →

6. 6
   Mailmodo 2.0 (YC S21)▲354

   Interactive email marketing made easier

   2024 · its alternatives →

7. 7
   Mailmeteor 2.0▲301

   Send auto follow-up emails with Gmail

   2022 · its alternatives →

8. 8
   GMass▲574

   Send email marketing campaigns INSIDE Gmail.

   2017 · its alternatives →

9. 9
   Hyperise Beta▲248

   2X your email CTR with dynamic personalised images.

   2019 · its alternatives →

10. 10
    MailTester.AI▲328

    Forward an email and get an AI deliverability report in 30s

    Oct 2025 · mailtester.ai · its alternatives →

11. 11
    Gmail 5.0▲580

    A facelift for Gmail on iOS

    2016 · its alternatives →

12. 12
    GMPlus▲154

    Transform your gmail communication with ChatGPT AI

    2023 · its alternatives →

13. 13
    Unlimited Email Tracker▲494

    Track opens and clicks, set reminders and delays in Gmail

    2019 · its alternatives →

14. 14
    EmailGenius Pro▲106

    Unleash email brilliance: elevate your email marketing game

    2023 · its alternatives →

15. 15
    Mailnest▲100

    Sandbox Email testing tool for IT product, service companies

    2020 · its alternatives →

16. 16
    Smart Compose in Gmail▲431

    Write emails faster with Smart Compose in Gmail

    2018 · its alternatives →

17. 17
    Growbots Email Timing Optimizer▲431

    Find the perfect time to send your email

    2017 · its alternatives →

18. 18
    Million Dollar Email Templates 2.0▲352

    Steal the emails that have generated $100+ million

    2021 · its alternatives →

19. 19
    Shortwave AI Email Assistant 2.0▲214

    The ultimate search, analysis, and productivity companion

    2024 · its alternatives →

20. 20
    Mailtrack.io▲282

    The best email tracking solution I've found. Free

    2014 · its alternatives →

21. 21
    Darwin Mail▲259

    Enhance Gmail to get your Google Inbox features back.

    2019 · its alternatives →

22. 22
    Emailurgency▲78

    Improve email marketing potential with animations.

    2018 · its alternatives →

23. 23
    Gblock▲107

    Block email tracking in Gmail

    2025 · its alternatives →

24. 24
    SendGrid Email Analytics by Keen IO▲201

    Detailed email reporting that drives results

    2017 · 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 →