Litmus vs MailMonitor:Which is more popular?
In September 2026, Litmus and MailMonitor were level in searches among email deliverability testing tools worldwide, with an estimated 590 branded searches each, at 0.14% of the total each. When we asked ChatGPT and Google AI Overviews about email deliverability testing tools, Litmus appeared in two of the five answers and MailMonitor in none.
Who do people search for more?
Litmus and MailMonitor are searched for about as often as each other.
Who does AI mention more?
Litmus, mentioned in 2 of 5 answers, MailMonitor in 0
Who does AI recommend more?
Litmus, the only one of the two named
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Top email deliverability testing tools in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Litmus was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. MailMonitor did not appear in any of the five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
GlockApps1st
Mail-Tester2nd
MailReach3rd
MXToolbox4th- Litmus5th
Mailtrap6th
InboxAlly–
MailMonitor–
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Mail-Tester4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- GlockApps4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- MailReach3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- MXToolbox2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Mailtrap2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Litmus2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- InboxAlly0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- MailMonitor0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about email deliverability testing tools
5 answers
Asked ChatGPT
“Which email deliverability testing tool should I use?”
Asked ChatGPT
“What are the best email deliverability testing tools?”
Asked ChatGPT
“What's the best email deliverability testing tool for better inbox placement?”
Searched Google, AI Overview
“email deliverability tool”
Searched Google, AI Overview
“email spam test”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is Litmus or MailMonitor more popular in search?
This chart shows how often people search Google for Litmus and MailMonitor by name. Each line represents a brand's share of searches for all eight email deliverability testing tools we track, month by month, from English-language searches worldwide.
Share of searches by month for Litmus, MailMonitor. The figures are in the table below the chart.
View monthly share of searches table
| Month | MXToolbox | Mail-Tester | Mailtrap | GlockApps | MailReach | InboxAlly | Litmus | MailMonitor |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 66.5% | 16.6% | 13.8% | 1.5% | 0.97% | 0.24% | 0.19% | 0.19% |
| Nov 2025 | 68.6% | 16.6% | 11.7% | 1.5% | 1% | 0.2% | 0.2% | 0.2% |
| Dec 2025 | 66.2% | 16.6% | 13.9% | 1.5% | 1.2% | 0.29% | 0.19% | 0.24% |
| Jan 2026 | 68.3% | 17.1% | 11.8% | 1.2% | 1% | 0.22% | 0.16% | 0.2% |
| Feb 2026 | 68.2% | 17.1% | 11.7% | 1.2% | 1.2% | 0.24% | 0.16% | 0.2% |
| Mar 2026 | 68.8% | 16.6% | 11.8% | 1.2% | 1% | 0.17% | 0.16% | 0.16% |
| Apr 2026 | 70.5% | 14.4% | 12.1% | 1.3% | 1.3% | 0.21% | 0.17% | 0.14% |
| May 2026 | 68.5% | 16.6% | 11.8% | 1.2% | 1.2% | 0.2% | 0.16% | 0.2% |
| Jun 2026 | 68.3% | 16.7% | 11.7% | 1.5% | 1.2% | 0.2% | 0.16% | 0.16% |
| Jul 2026 | 68.1% | 17% | 11.7% | 1.5% | 1.2% | 0.21% | 0.13% | 0.13% |
| Aug 2026 | 67.1% | 17.6% | 11.6% | 1.5% | 1.5% | 0.29% | 0.2% | 0.2% |
| Sep 2026 | 70% | 16.9% | 9.8% | 1.5% | 1.3% | 0.24% | 0.14% | 0.14% |
How has the Litmus and MailMonitor comparison changed over the last 12 months?
3 findings
- The lead changed hands 2 times in the 12 months ending September 2026: Litmus took it in April 2026, MailMonitor took it in May 2026.
- Across the 12 months ending September 2026, Litmus’ share of searches among email deliverability testing tools worldwide moved from 0.19% to 0.14%, and its estimated monthly branded searches moved from 880 to 590.
- Across the 12 months ending September 2026, MailMonitor’s share of searches among email deliverability testing tools worldwide moved from 0.19% to 0.14%, and its estimated monthly branded searches moved from 880 to 590.
How did search popularity change for email deliverability testing tools worldwide in September 2026?
2 changes
Estimated monthly branded searches for Litmus worldwide fell 33% over 12 measured months, from 880 to 590 in September 2026.
Estimated monthly branded searches for MailMonitor worldwide fell 33% over 12 measured months, from 880 to 590 in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Litmus’ and MailMonitor’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Litmus
1 branded search term
- litmus email
MailMonitor
1 branded search term
- mail monitor
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