---
title: "Email deliverability testing tools: Which brands are most popular in search?"
description: "Compare services and tools used to test email sending and delivery. Share of Search among Mail-Tester, Mailtrap, GlockApps, InboxAlly and MailMonitor, the email deliverability testing tools Brandwave compares worldwide, using the same methodology, market, and reporting period. 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."
canonical: "https://gobrandwave.com/demand/global-en/categories/email-deliverability-testing-tools"
publisher: "Brandwave"
---

# Email deliverability testing tools: Which brands are most popular in search?

Compare services and tools used to test email sending and delivery. Share of Search among Mail-Tester, Mailtrap, GlockApps, InboxAlly and MailMonitor, the email deliverability testing tools Brandwave compares worldwide, using the same methodology, market, and reporting period. 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.

## Key facts

- **Competitive set**: Email deliverability testing tools
- **Market**: Global
- **Brands compared**: 5
- **Month measured**: Aug 2026
- **Highest Share of Search**: Mail-Tester, 52.4%

## Which brand is most popular in search among email deliverability testing tools worldwide?

- In August 2026, Mail-Tester was the most searched among email deliverability testing tools worldwide, with an estimated 54.8K branded searches and 52.4% estimated Share of Search within this set.
- Mailtrap is in 2nd place, 11.6 percentage points behind at 40.8% Share of Search.
- Across the 11 months ending August 2026, Mail-Tester’s estimated Share of Search among email deliverability testing tools worldwide increased from 46.8% to 52.4%.
- Across the 11 months ending August 2026, Mailtrap’s estimated Share of Search among email deliverability testing tools worldwide decreased from 46.8% to 40.8%.
- Across the 11 months ending August 2026, Mail-Tester’s estimated Share of Search among email deliverability testing tools worldwide peaked at 52.6% in July 2026 and was lowest at 46.8% in October 2025.
- Across the 11 months ending August 2026, GlockApps, InboxAlly and MailMonitor held steady: their estimated Share of Search among email deliverability testing tools worldwide each moved less than 0.5 percentage points.

## Compare search popularity between leading brands

- [Mail-Tester vs Mailtrap: compare search popularity](/demand/global-en/compare/mail-tester-vs-mailtrap): 52.4% against 40.8% Share of Search.
- [Mail-Tester vs GlockApps: compare search popularity](/demand/global-en/compare/glockapps-vs-mail-tester): 52.4% against 5.2% Share of Search.
- [Mailtrap vs GlockApps: compare search popularity](/demand/global-en/compare/glockapps-vs-mailtrap): 40.8% against 5.2% Share of Search.

## How did search popularity change for email deliverability testing tools worldwide in August 2026?

- Mailtrap’s estimated Share of Search among email deliverability testing tools worldwide has lost ground for 3 months in a row, from 42.5% to 40.8% in August 2026.
- Estimated monthly branded searches for GlockApps worldwide fell 18.1% over 11 measured months, from 6.6K to 5.4K in August 2026.
- Estimated monthly branded searches for MailMonitor worldwide fell 18% over 11 measured months, from 890 to 730 in August 2026.
- Estimated monthly branded searches for Mail-Tester worldwide fell 12.2% over 11 measured months, from 62.4K to 54.8K in August 2026.

## Share of Search ranking

| Rank | Brand | Share of Search | Estimated monthly branded searches | Change vs prior month | Owned by |
| --- | --- | --- | --- | --- | --- |
| 1 | Mail-Tester | 52.4% | 54.8K | -17.6% | Mail-Tester |
| 2 | Mailtrap | 40.8% | 42.7K | -17.5% | Mailtrap |
| 3 | GlockApps | 5.2% | 5.4K | -18.1% | GlockApps |
| 4 | InboxAlly | 1% | 1.1K | +12.9% | InboxAlly |
| 5 | MailMonitor | 0.7% | 730 | +21.7% | MailMonitor |

## Historical estimated branded-search demand

| Month | Brand | Estimated monthly branded searches | Share of Search | Rank |
| --- | --- | --- | --- | --- |
| Oct 2025 | Mail-Tester | 62.4K | 46.8% | 1 |
| Oct 2025 | Mailtrap | 62.4K | 46.8% | 2 |
| Oct 2025 | GlockApps | 6.6K | 5% | 3 |
| Oct 2025 | InboxAlly | 1.1K | 0.82% | 4 |
| Oct 2025 | MailMonitor | 890 | 0.67% | 5 |
| Nov 2025 | Mail-Tester | 62.9K | 51.2% | 1 |
| Nov 2025 | Mailtrap | 51.5K | 41.9% | 2 |
| Nov 2025 | GlockApps | 6.6K | 5.4% | 3 |
| Nov 2025 | InboxAlly | 890 | 0.72% | 4 |
| Nov 2025 | MailMonitor | 890 | 0.72% | 5 |
| Dec 2025 | Mail-Tester | 52.4K | 47.1% | 1 |
| Dec 2025 | Mailtrap | 51.5K | 46.3% | 2 |
| Dec 2025 | GlockApps | 5.4K | 4.9% | 3 |
| Dec 2025 | InboxAlly | 1.1K | 0.98% | 4 |
| Dec 2025 | MailMonitor | 890 | 0.8% | 5 |
| Jan 2026 | Mail-Tester | 64.1K | 52% | 1 |
| Jan 2026 | Mailtrap | 51.9K | 42.1% | 2 |
| Jan 2026 | GlockApps | 5.4K | 4.4% | 3 |
| Jan 2026 | InboxAlly | 980 | 0.79% | 4 |
| Jan 2026 | MailMonitor | 890 | 0.72% | 5 |
| Feb 2026 | Mail-Tester | 64.2K | 52% | 1 |
| Feb 2026 | Mailtrap | 51.7K | 42% | 2 |
| Feb 2026 | GlockApps | 5.4K | 4.4% | 3 |
| Feb 2026 | InboxAlly | 1.1K | 0.85% | 4 |
| Feb 2026 | MailMonitor | 890 | 0.72% | 5 |
| Mar 2026 | Mail-Tester | 77.7K | 52.1% | 1 |
| Mar 2026 | Mailtrap | 62.9K | 42.2% | 2 |
| Mar 2026 | GlockApps | 6.6K | 4.4% | 3 |
| Mar 2026 | InboxAlly | 930 | 0.62% | 4 |
| Mar 2026 | MailMonitor | 890 | 0.6% | 5 |
| Apr 2026 | Mail-Tester | 64.1K | 47.3% | 1 |
| Apr 2026 | Mailtrap | 63K | 46.5% | 2 |
| Apr 2026 | GlockApps | 6.6K | 4.9% | 3 |
| Apr 2026 | InboxAlly | 1.1K | 0.8% | 4 |
| Apr 2026 | MailMonitor | 730 | 0.54% | 5 |
| May 2026 | Mail-Tester | 63.2K | 51.6% | 1 |
| May 2026 | Mailtrap | 52K | 42.5% | 2 |
| May 2026 | GlockApps | 5.4K | 4.4% | 3 |
| May 2026 | InboxAlly | 890 | 0.73% | 4 |
| May 2026 | MailMonitor | 890 | 0.73% | 5 |
| Jun 2026 | Mail-Tester | 64.3K | 51.7% | 1 |
| Jun 2026 | Mailtrap | 51.8K | 41.7% | 2 |
| Jun 2026 | GlockApps | 6.6K | 5.3% | 3 |
| Jun 2026 | InboxAlly | 890 | 0.72% | 4 |
| Jun 2026 | MailMonitor | 730 | 0.59% | 5 |
| Jul 2026 | Mail-Tester | 66.5K | 52.6% | 1 |
| Jul 2026 | Mailtrap | 51.7K | 40.9% | 2 |
| Jul 2026 | GlockApps | 6.6K | 5.2% | 3 |
| Jul 2026 | InboxAlly | 930 | 0.74% | 4 |
| Jul 2026 | MailMonitor | 600 | 0.47% | 5 |
| Aug 2026 | Mail-Tester | 54.8K | 52.4% | 1 |
| Aug 2026 | Mailtrap | 42.7K | 40.8% | 2 |
| Aug 2026 | GlockApps | 5.4K | 5.2% | 3 |
| Aug 2026 | InboxAlly | 1.1K | 1% | 4 |
| Aug 2026 | MailMonitor | 730 | 0.7% | 5 |
| Sep 2026 | GlockApps | — | — | — |
| Sep 2026 | InboxAlly | — | — | — |
| Sep 2026 | Mail-Tester | — | — | — |
| Sep 2026 | MailMonitor | — | — | — |
| Sep 2026 | Mailtrap | — | — | — |

## What is being compared

- **GlockApps**: Measured on the search terms “glock apps” and “glockapps com”, summed into one figure.
- **InboxAlly**: Measured on the search terms “inbox ally” and “inboxally”, summed into one figure.
- **Mail-Tester**: Measured on the search terms “mail tester com”, “mail-tester”, “mail-tester email testing” and “mail-tester software”, summed into one figure.
- **MailMonitor**: Measured on the search terms “mail monitor” and “mailmonitor com”, summed into one figure.
- **Mailtrap**: Measured on the search terms “mailtrap”, “mailtrap email”, “mailtrap email sandbox”, “mailtrap email testing” and “mailtrap io”, summed into one figure.

- [GlockApps](/demand/global-en/brands/glockapps)
- [InboxAlly](/demand/global-en/brands/inboxally)
- [Mail-Tester](/demand/global-en/brands/mail-tester)
- [MailMonitor](/demand/global-en/brands/mailmonitor)
- [Mailtrap](/demand/global-en/brands/mailtrap)

## Methodology

- [How is branded search demand measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused.

## Frequently asked questions

### Which brand is most popular in search among email deliverability testing tools worldwide?

In August 2026, Mail-Tester was the most searched among email deliverability testing tools worldwide, with an estimated 54.8K branded searches and 52.4% estimated Share of Search within this set. Worldwide · English terms: these are worldwide searches for English-language branded terms.

## Cite this page

Brandwave. "Email deliverability testing tools: Which brands are most popular in search?". https://gobrandwave.com/demand/global-en/categories/email-deliverability-testing-tools

This page is also available as HTML at https://gobrandwave.com/demand/global-en/categories/email-deliverability-testing-tools. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.