# MXToolbox alternatives: what AI models name instead, October 2026

GTM AI Recommendation Index, October 2026 Edition. 207 of the 252 answers in the 1 category where MXToolbox holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://gtm-ai-index.com/vendors/mxtoolbox/alternatives/

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

- GlockApps: 46
- Validity Everest: 31
- Google Postmaster Tools: 8
- Litmus: 8
- Mail-Tester: 5
- Everest: 4

## Email deliverability and testing tools

**Small business**: 64 of 84 answers did not name MXToolbox (MXToolbox is #3 of 15 at 6%).

- GlockApps: first choice in 17 of those 64
- Google Postmaster Tools: first choice in 6 of those 64
- Litmus: first choice in 4 of those 64
- MailerCheck: first choice in 4 of those 64
- Mailtrap: first choice in 4 of those 64
- Mail-Tester: first choice in 3 of those 64
- ZeroBounce: first choice in 3 of those 64
- Email on Acid: first choice in 2 of those 64

**Mid-market**: 63 of 84 answers did not name MXToolbox (MXToolbox is #4 of 12 at 5%).

- GlockApps: first choice in 25 of those 63
- MailReach: first choice in 3 of those 63
- Google Postmaster Tools: first choice in 2 of those 63
- Mail-Tester: first choice in 2 of those 63
- Validity Everest: first choice in 2 of those 63
- Allegrow: first choice in 1 of those 63
- EmailListVerify: first choice in 1 of those 63
- Folderly: first choice in 1 of those 63

**Enterprise**: 80 of 84 answers did not name MXToolbox (MXToolbox is #14 of 14 at 0%).

- Validity Everest: first choice in 29 of those 80
- Everest: first choice in 4 of those 80
- GlockApps: first choice in 4 of those 80
- Litmus: first choice in 4 of those 80
- Validity Engage: first choice in 4 of those 80
- Instantly: first choice in 3 of those 80
- Mailgun: first choice in 3 of those 80
- SendGrid: first choice in 3 of those 80

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