# Google Postmaster Tools alternatives: what AI models name instead, November 2026

Gane Index, November 2026 Edition. 181 of the 252 answers in the 1 category where Google Postmaster Tools 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/google-postmaster-tools/alternatives

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

- GlockApps: 33
- Validity Everest: 28
- Litmus: 10
- Instantly: 7
- Validity Engage: 7
- Sender: 6

## Email deliverability and testing tools

**Small business**: 53 of 84 answers did not name Google Postmaster Tools (Google Postmaster Tools is #5 of 15 at 5%).

- GlockApps: first choice in 14 of those 53
- Instantly: first choice in 5 of those 53
- MailerLite: first choice in 3 of those 53
- Sender: first choice in 3 of those 53
- Brevo: first choice in 2 of those 53
- Litmus: first choice in 2 of those 53
- Mailtrap Email Sandbox: first choice in 2 of those 53
- 250ok: first choice in 1 of those 53

**Mid-market**: 54 of 84 answers did not name Google Postmaster Tools (Google Postmaster Tools is #2 of 19 at 10%).

- GlockApps: first choice in 16 of those 54
- Litmus: first choice in 4 of those 54
- Sender: first choice in 3 of those 54
- Allegrow: first choice in 2 of those 54
- Folderly: first choice in 2 of those 54
- HubSpot Sales Hub: first choice in 2 of those 54
- ZeroBounce: first choice in 2 of those 54
- Mail-Tester: first choice in 1 of those 54

**Enterprise**: 74 of 84 answers did not name Google Postmaster Tools (Google Postmaster Tools is #12 of 17 at 0%).

- Validity Everest: first choice in 28 of those 74
- Validity Engage: first choice in 7 of those 74
- Litmus: first choice in 4 of those 74
- GlockApps: first choice in 3 of those 74
- Inbox Monster: first choice in 3 of those 74
- Mailgun Optimize: first choice in 3 of those 74
- Instantly: first choice in 2 of those 74
- Mailgun: first choice in 2 of those 74

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