Mail-Tester vs MXToolbox:Which is searched more?
In September 2026, MXToolbox had more branded searches than Mail-Tester among email deliverability testing tools worldwide. MXToolbox had about 301,000 branded searches, while Mail-Tester had 72,700. MXToolbox made up 70% of all email deliverability testing tool searches we track, and Mail-Tester accounted for 16.9%. These are worldwide searches for English-language branded terms.
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Is Mail-Tester or MXToolbox more popular in search?
Compare services and tools used to test email sending and delivery. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of searches by month for MXToolbox, Mail-Tester. 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 Mail-Tester and MXToolbox comparison changed over the last 12 months?
3 findings
- MXToolbox was ahead of Mail-Tester in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Mail-Tester’s share of searches among email deliverability testing tools worldwide moved from 16.6% to 16.9%, and its estimated monthly branded searches moved from 75.3K to 72.7K.
- Across the 12 months ending September 2026, MXToolbox’s share of searches among email deliverability testing tools worldwide moved from 66.5% to 70%, and its estimated monthly branded searches held steady at 301K.
How did search popularity change for email deliverability testing tools worldwide in September 2026?
2 changes
In September 2026, MXToolbox gained share of searches among email deliverability testing tools worldwide, from 67.1% to 70%.
In September 2026, Mail-Tester lost share of searches among email deliverability testing tools worldwide, from 17.6% to 16.9%.
How are branded searches counted?
5 search terms
Brandwave collects information about searches that people make online using Mail-Tester’s and MXToolbox’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.
Mail-Tester
4 branded search terms
- mail-tester
- mail-tester email testing
- mail-tester software
- mailtester
MXToolbox
1 branded search term
- mxtoolbox
Other head-to-heads among email deliverability testing tools
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