AEO for email deliverability software: AI search visibility ranking
How AI search engines rank email deliverability software by visibility and citations. 20 brands measured quarterly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Email deliverability software used to improve inbox placement, monitor sender reputation, validate sending infrastructure, and diagnose campaign delivery issues at scale. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
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When buyers ask AI engines about Email deliverability software, GlockApps emerges as the leader, cited in 12.5% of cases. Following closely are other top brands like Warmy and MxToolbox. These brands stand out in a crowded field of 20 options, reflecting their reliability and market presence.
The rankings are shaped by the sources AI engines frequently reference. Predominantly, these are aggregator and review sites like youtube.com, amplemarket.com, and mailgenius.com. Such sources often provide comprehensive and unbiased reviews, which help AI discern the most reputable solutions in the market.
For a buyer evaluating this list, consider the weight AI engines place on third-party validation and recent reviews. This underscores the importance of choosing solutions with strong, up-to-date endorsements and verified authority in the specific subcategory of email deliverability software.
At a glance
What we observed in this category
GlockApps holds the sole top position in this category with a composite score of 12.5, the only brand where visibility and citation are perfectly aligned at 12.5% each. The category average visibility sits at just 1.9%, making GlockApps an extreme outlier rather than a marginal leader. Warmy and MxToolbox match GlockApps on raw visibility at 12.5% each but record zero citation, which suppresses their composite scores to 8.8 and separates them clearly from the top rank.
A notable divergence exists between named brands and cited brands in this category. Mailtrap, InboxAlly, and Allegrow each hold 0% visibility yet each record 25% citation, meaning Google AI Mode references them as sources without surfacing them as named answers. This pattern suggests the AI treats some brands as supporting evidence rather than as primary recommendations, a meaningful distinction for any brand trying to move from cited to visible in AI-generated responses.
Google AI Mode is the sole engine recorded across all 20 brands in this audit, meaning there is no cross-engine variation to analyse. The top cited external sources include youtube.com, reddit.com, and emailtooltester.com alongside specialist domains such as mailgenius.com and amplemarket.com. The presence of reddit.com and youtube.com among the top anchoring sources indicates that AI responses in this category are drawing on community and video content rather than exclusively on vendor or review-site material.
Movers & shakers since last refresh
Biggest visibility risers
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Warmy 0% → 12% · rank #14 → #2+12pp
-
MxToolbox 0% → 12% · rank #18 → #3+12pp
Biggest visibility fallers
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Mailtrap 12% → 0% · rank #1 → #4-12pp
-
InboxAlly 12% → 0% · rank #6 → #5-12pp
-
ZeroBounce 12% → 0% · rank #4 → #8-12pp
The AEO ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
glockapps.com
|
12% | 12% | Google AI Mode |
GlockApps is the only brand with matched visibility and citation both at 12.5%, giving it a composite score of 12.5 versus the category visibility average of 1.9%. |
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| 2 |
warmy.io
|
12% | 0% | Google AI Mode |
Warmy jumped 12 places from rank 14 to rank 2 with a visibility delta of 12.5%, but its zero citation rate keeps its composite score at 8.8, below GlockApps. |
||||
| 3 |
mxtoolbox.com
|
12% | 0% | Google AI Mode |
MxToolbox rose 15 places from rank 18 to rank 3 with 12.5% visibility, yet records 0% citation, matching Warmy's composite score of 8.8 exactly. |
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| 4 |
mailtrap.io
|
0% | 25% | Google AI Mode |
Mailtrap fell from rank 1 to rank 4 after losing 12.5 visibility points and 62.5 citation points, though it retains 25% citation with zero current visibility. |
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| 5 |
inboxally.com
|
0% | 25% | Google AI Mode |
InboxAlly dropped to 0% visibility from 12.5% previously, yet gained 25 citation points, placing it equal with Mailtrap and Allegrow at a composite score of 7.5. |
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| 6 |
allegrow.co
|
0% | 25% | Google AI Mode |
| 7 |
mailreach.co
|
0% | 12% | Google AI Mode |
| 8 |
zerobounce.net
|
0% | 12% | Google AI Mode |
| 9 |
mailmonitor.com
|
0% | 12% | Google AI Mode |
| 10 |
expertsender.com
|
0% | 0% | Google AI Mode |
| 11 |
postmarkapp.com
|
0% | 0% | Google AI Mode |
| 12 |
mailercheck.com
|
0% | 0% | Google AI Mode |
| 13 |
mailgun.com
|
0% | 0% | Google AI Mode |
| 14 |
sendforensics.com
|
0% | 0% | Google AI Mode |
| 15 |
folderly.com
|
0% | 0% | Google AI Mode |
| 16 |
validity.com
|
0% | 0% | Google AI Mode |
| 17 |
kickbox.com
|
0% | 0% | Google AI Mode |
| 18 |
litmus.com
|
0% | 0% | Google AI Mode |
| 19 |
sparkpost.com
|
0% | 0% | Google AI Mode |
| 20 |
250ok.com
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on email deliverability software, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this AEO ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer. More on visibility →
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence, different from being named. More on citation rate →
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps. How AI engines pick sources →
AEO rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 90 days and refresh this page automatically. How AI search ranking works →
Run an AEO audit on your own email deliverability software brand
The brands above were curated from public market-leader lists. Want the same answer engine optimisation measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about AEO for email deliverability software
Who leads AI visibility in email deliverability software?
GlockApps leads with a composite score of 12.5 and is the only brand where visibility and citation are both at 12.5%. Warmy and MxToolbox share the same visibility figure but hold lower composite scores due to zero citation.
What is the average AI visibility for email deliverability software brands?
The category average visibility is 1.9%, while average citation sits at 6.2%, meaning most of the 20 tracked brands have minimal presence in Google AI Mode responses.
Which email deliverability brands are cited by AI but not named as visible answers?
Mailtrap, InboxAlly, and Allegrow each record 0% visibility but 25% citation each, indicating Google AI Mode uses them as supporting sources without surfacing them as primary brand recommendations.
What sources does Google AI Mode anchor on most for email deliverability research?
The top cited external sources include youtube.com, reddit.com, emailtooltester.com, mailgenius.com, and amplemarket.com, showing reliance on community, video, and specialist review content.
Which brands have seen the biggest recent AI visibility gains in this category?
Warmy rose 12 places (from rank 14 to rank 2) and MxToolbox rose 15 places (from rank 18 to rank 3), both gaining 12.5 visibility points from a previous baseline of zero.
Which brands have lost the most AI visibility in email deliverability software?
Mailtrap dropped from rank 1 to rank 4 with a visibility loss of 12.5 points and a citation loss of 62.5 points, making it the steepest faller in the current audit period.