# Mail-Tester alternatives: what AI models name instead, November 2026

Gane Index, November 2026 Edition. 212 of the 252 answers in the 1 category where Mail-Tester holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://www.gane.ai/index/gtm/vendors/mail-tester/alternatives

## Named instead, most often (every category and segment added)

- GlockApps: 42
- Validity Everest: 36
- Google Postmaster Tools: 11
- Litmus: 10
- Sender: 8
- Instantly: 7

## Email deliverability and testing tools

**Small business**: 59 of 84 answers did not name Mail-Tester (Mail-Tester is #4 of 15 at 7%).

- GlockApps: first choice in 13 of those 59
- Instantly: first choice in 5 of those 59
- Sender: first choice in 5 of those 59
- Google Postmaster Tools: first choice in 4 of those 59
- MXToolbox: first choice in 3 of those 59
- Brevo: first choice in 2 of those 59
- Litmus: first choice in 2 of those 59
- MailReach: first choice in 2 of those 59

**Mid-market**: 69 of 84 answers did not name Mail-Tester (Mail-Tester is #8 of 19 at 2%).

- GlockApps: first choice in 24 of those 69
- Google Postmaster Tools: first choice in 7 of those 69
- Litmus: first choice in 4 of those 69
- Sender: first choice in 3 of those 69
- Allegrow: first choice in 2 of those 69
- HubSpot Sales Hub: first choice in 2 of those 69
- MXToolbox: first choice in 2 of those 69
- Microsoft SNDS: first choice in 2 of those 69

**Enterprise**: 84 of 84 answers did not name Mail-Tester.

- Validity Everest: first choice in 36 of those 84
- Validity Engage: first choice in 7 of those 84
- GlockApps: first choice in 5 of those 84
- Inbox Monster: first choice in 4 of those 84
- Litmus: first choice in 4 of those 84
- Mailgun Optimize: first choice in 3 of those 84
- Instantly: first choice in 2 of those 84
- Mailgun: first choice in 2 of those 84

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.