Mailjet vs Mailtrap
Compare Mailjet and Mailtrap based on observed API performance, features, and pricing
Live performance comparison
Real-world performance data from messages sent through Knock
| Provider | Message volume | Growth | Status page updates (30d) | Status page updates (90d) |
|---|---|---|---|---|
 | <1M | 6th of 10 ↓ | 0 | 0 |
 | <1M | 7th of 10 ↑ | 0 | 0 |
From December 12th to March 12th, Knock routed <1M messages through Mailjet and <1M through Mailtrap. Mailjet reported 0 status page updates over the last 90 days, while Mailtrap reported 0.
Response time
Response time measures how long each provider takes to accept an API request from Knock, including connection overhead and any automatic retries. Lower values mean faster message hand-off.
The chart above shows each provider's daily median response time (p50) from December 12th to March 12th. The top-line number is an average of these daily values: Mailjet averaged 408ms compared to 139ms for Mailtrap. Mailjet's highest daily p50 was 491ms; Mailtrap's was 821ms. Mailtrap is 269ms faster at the median, which can add up at high volumes.
The 90th percentile (p90) captures the slowest 10% of requests, revealing how each provider handles moderate stress. Averaged across all days, Mailjet has a p90 of 525ms compared to 591ms for Mailtrap. The highest daily p90 was 593ms for Mailjet and 1356ms for Mailtrap. Mailjet handles these slower requests 66ms faster, suggesting more consistent performance across the board.
The 99th percentile (p99) represents the long tail — the slowest 1% of requests. Averaged across all days, Mailjet reached 701ms at p99 while Mailtrap reached 1308ms. The highest daily p99 was 5104ms for Mailjet and 5222ms for Mailtrap, indicating the worst-case response time during spikes or provider-side congestion. Mailjet shows a tighter tail, which may matter for time-sensitive notifications like one-time passwords or real-time alerts where even rare delays can impact user experience.
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.
| Provider | Avg. daily error rate | Highest daily rate | Peak error date | Zero-error days | Days above 0.01% |
|---|---|---|---|---|---|
| 0.00% | 0.12% | Feb 23 | 90 | 1 |
| 0.00% | 0.00% | Dec 12 | 91 | 0 |
Averaged across the date range, Mailjet shows a 0.00% daily error rate compared to 0.00% for Mailtrap. The highest single-day error rate was 0.12% for Mailjet and 0.00% for Mailtrap. Both providers show similar reliability levels, with error rates well within acceptable thresholds. Knock automatically retries failed requests to both providers, minimizing the impact of transient errors on end-user delivery.
About these metrics: Data represents messages sent through Knock during the specified period. Response time measures time from Knock to provider acceptance. Error rate includes only provider 5xx responses and timeouts.
Recent Mailjet incidents
Status page incidents from the last 30 days for Mailjet
No incidents reported in the last 30 days
Recent Mailtrap incidents
Status page incidents from the last 30 days for Mailtrap
No incidents reported in the last 30 days
Pros and cons
Mailjet
Mailtrap
Pros
- Hybrid support for both marketers and developers in a single platform
- Unique real-time collaboration features for team-based template editing
- EU-only data processing for companies with strict data residency requirements
- Powers email delivery for over 130,000 companies including Microsoft and DHL
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
- Activated automation workflows cannot be edited, requiring new workflows for any changes
- Some analytics and deliverability tools are locked behind higher pricing plans
- Deliverability can lag behind specialists like Postmark
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
What is the difference between Mailjet and Mailtrap?
Mailjet is a collaborative email platform with real-time editing and combined transactional and marketing capabilities. Mailtrap is an email platform combining safe testing and sandbox environments with production sending capabilities. Mailjet is best suited for team collaboration + marketing, while Mailtrap is geared toward email testing + qa.
Which is cheaper, Mailjet or Mailtrap?
Free tier includes 200 emails per day (6,000/month). Paid plans start at $17/month for 15,000 emails with no daily limit. Premium plans start at $105/month for 100,000 emails. 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. The best value depends on your sending volume. Use the pricing calculator above to compare costs at your expected volume.
Which is faster, Mailjet or Mailtrap?
Based on real-world data from Knock, Mailjet has a median API response time (p50) of 408ms compared to 139ms for Mailtrap.
Which is more reliable, Mailjet or Mailtrap?
From December 12th to March 12th, Mailjet showed an error rate of 0.00% while Mailtrap showed 0.00%. Both rates are within acceptable thresholds for production email delivery, and Knock automatically retries failed requests to minimize the impact of transient errors.
Which is more popular, Mailjet or Mailtrap?
On the Knock platform, Mailjet handled <1M messages from December 12th to March 12th compared to <1M for Mailtrap. Mailjet is currently seeing declining volume, while Mailtrap is trending upward.
Can I use both Mailjet and Mailtrap together?
Yes. Knock enables you to integrate multiple email providers into a single notification workflow. You can use Mailjet and Mailtrap side by side, route traffic between them, or migrate from one to the other without changing your application code.
What are the main pros and cons of Mailjet vs Mailtrap?
Mailjet strengths include hybrid support for both marketers and developers in a single platform and unique real-time collaboration features for team-based template editing. Mailtrap 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, Mailjet drawbacks include activated automation workflows cannot be edited, requiring new workflows for any changes, while Mailtrap drawbacks include native integration ecosystem is smaller than established competitors.
Use either provider with Knock
Knock enables you to integrate Mailjet, Mailtrap, or any combination of email providers into a single notification workflow. Manage templates, orchestrate cross-channel delivery, and switch providers without changing your code.