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Index › GTM › Products › Email on Acid › Alternatives · November 2026 Edition
One category · what the models named instead

Alternatives to Email on Acid, as AI models named them

In the November 2026 Edition, 229 of the 252 answers collected in the one category where Email on Acid holds a standing named it neither as a first choice nor as an alternative. These are the products those answers put first, category by category and buyer by buyer. The output is the models' output.

Named instead, most often
GlockApps43
Validity Everest30
Google Postmaster Tools19
Sender12
MXToolbox10
Instantly8
First choices in the 229 answers that did not name Email on Acid, every category and segment above added together; a product can be counted in several. Each category below keeps its own denominator.

Email deliverability and testing tools

Marketing. Six framings, fourteen models, one answer each per buyer segment; an answer counts here when Email on Acid is not its first choice or an alternative in it.
Small businessEmail on Acid is #15 of 15 here at 0% of first choices, 14 labels.

Seventy-six of the eighty-four answers did not name Email on Acid; it was the first choice in zero. The first choices in those seventy-six answers, twenty-five products in all, the eight most named:

GlockApps16 of 76
Google Postmaster Tools11 of 76
MXToolbox7 of 76
Sender7 of 76
Instantly6 of 76
Mail-Tester6 of 76
MailerLite3 of 76
Brevo2 of 76
17 more in the record.The full small business standing →
Mid-marketEmail on Acid is #14 of 19 here at 0% of first choices, 14 labels.

Seventy-five of the eighty-four answers did not name Email on Acid; it was the first choice in zero. The first choices in those seventy-five answers, twenty-two products in all, the eight most named:

GlockApps22 of 75
Google Postmaster Tools8 of 75
Sender5 of 75
MXToolbox3 of 75
Allegrow2 of 75
HubSpot Sales Hub2 of 75
Litmus2 of 75
Microsoft SNDS2 of 75
14 more in the record.The full mid-market standing →
EnterpriseEmail on Acid holds 9 labels here, under the 10-label cutoff, so it is unranked.

Seventy-eight of the eighty-four answers did not name Email on Acid; it was the first choice in zero. The first choices in those seventy-eight answers, twenty products in all, the eight most named:

Validity Everest30 of 78
Validity Engage7 of 78
GlockApps5 of 78
Inbox Monster4 of 78
Litmus3 of 78
Mailgun Optimize3 of 78
Instantly2 of 78
Mailgun2 of 78
12 more in the record.The full enterprise standing →

How to read this

A category is asked six ways of each of fourteen models on behalf of each buyer segment, so a segment is eighty-four answers. An answer belongs on this page when the judge labeled Email on Acid neither its first choice nor an alternative in it; the products listed are the first choices those answers made, counted once per answer. An answer that named nothing first, or named Email on Acid only in passing, is in the denominator and adds to no product. The counts are not the category standing, which is on the category page with its share and rank; they are the same record read from Email on Acid's side.

The output is the models' output; nothing here is a recommendation by the index, and a product named instead of Email on Acid was named by a model, not endorsed by anyone.

Email on Acid's pageAll products