Mailtrap
performance benchmarks
Browse Mailtrap's observed email API response time, error rates, and incident history over the last 90 days.
Live performance metrics
Real-world performance data from messages sent through Knock
| Message volume | Growth | Status page updates (30d) | Status page updates (90d) |
|---|---|---|---|
<1M | 9th of 10 ↓ | 1 | 5 |
From July 24th to October 22nd, Knock routed <1M messages through Mailtrap. For adoption, Mailtrap ranks 9th of 10 providers based on new channel connections, with adoption slowing over the period. Mailtrap reported 5 status page updates over the last 90 days, 1 of which was in the last 30 days.
Response time
Response time measures how long Mailtrap takes to accept an API request from Knock, including connection overhead and any automatic retries. Lower values mean faster message hand-off.
| Median (p50) | p90 | p95 | p99 |
|---|---|---|---|
81ms | 163ms | 218ms | 755ms |
From July 24th to October 22nd, Mailtrap averaged a daily median response time (p50) of 81ms across all days in the range, meaning half of all requests on a typical day complete in under 81ms. The 99th percentile averaged 755ms, with a peak daily p99 of 1675ms. This is slightly higher than some providers, which may reflect additional processing Mailtrap performs on message acceptance.
Error rate
Error rate tracks the ratio of 5xx responses and timeouts to total requests. Knock automatically retries failed requests, so transient provider errors rarely affect end-user delivery.
| Avg. daily error rate | Highest daily rate | Peak error date | Zero-error days | Days above 0.01% |
|---|---|---|---|---|
0.00% | 0.07% | Aug 1 | 90 | 1 |
From July 24th to October 22nd, Mailtrap averaged a 0.00% daily error rate for 5xx responses and timeouts, with the highest single-day error rate reaching 0.07%. This peak coincided with a major incident reported on Mailtrap's status page (Sending Services Downtime). This is one of the lowest error rates among providers on Knock, indicating strong reliability and consistent uptime. Knock automatically retries failed requests, so transient provider errors rarely affect end-user delivery.
About these metrics: Data represents messages sent through Knock to Mailtrap during the specified period. Response time measures time from Knock to provider acceptance. Error rate includes only provider 5xx responses and timeouts.
Recent Mailtrap incidents
Recent status page incidents for Mailtrap
Started Oct 8, 2026 — Resolved Oct 8, 2026
The maintenance is now complete. Thanks for your patience.
Started Aug 1, 2026 — Resolved Aug 1, 2026
Pingdom says we are back online.
Compare Mailtrap with other providers
About Mailtrap
Mailtrap is an email platform combining safe testing and sandbox environments with production sending capabilities.
Pros
- Strong deliverability with dedicated IPs, auto warmup, and automatic authentication
- Great developer experience with comprehensive docs and MCP support for IDEs
- Combined testing sandbox and production sending in one platform
- Trusted by PayPal, Atlassian, Adobe, and Yelp
Cons
- Native integration ecosystem is smaller than established competitors
- Lower sending limits on free tier compared to some providers
- No rate limits by default, which may require custom throttling configuration
Frequently asked questions
Mailtrap is an email service provider commonly used for email testing and qa, development and staging environments, transactional email sending. Mailtrap is an email platform combining safe testing and sandbox environments with production sending capabilities.
Free tier includes 4,000 emails per month (150/day limit). Paid plans start at $15/month for 10,000 emails with overages at $1.00/1K. Mailtrap offers a free tier with up to 4,000 emails, with a hard sending limit on that plan.
Based on real-world data from messages sent through Knock, Mailtrap accepts API requests with a median response time of 81ms (p50) and 755ms at the 99th percentile.
From July 24th to October 22nd, Mailtrap showed an error rate of 0.00% for 5xx responses and timeouts across <1M messages sent through Knock. Knock automatically retries failed requests, so transient provider errors rarely affect end-user delivery.
Key strengths include strong deliverability with dedicated ips, auto warmup, and automatic authentication and great developer experience with comprehensive docs and mcp support for ides. On the other hand, native integration ecosystem is smaller than established competitors and lower sending limits on free tier compared to some providers.
Yes. Knock has a native Mailtrap integration that enables you to send email notifications through Mailtrap as part of a cross-channel workflow. You can combine Mailtrap with other channels like in-app feeds, push, SMS, and Slack from a single API call.
Use Mailtrap with Knock
Knock enables you to integrate Mailtrap alongside other notification channels, manage templates, and orchestrate cross-channel workflows from a single platform.