Help & Support

Get help with Email API/SMTP issues and find answers to common questions.

Find answers to common questions and troubleshoot issues with Mailtrap's Email API/SMTP service. Our comprehensive help resources are designed to get you back on track quickly.

Resources

Frequently Asked Questions

Browse our comprehensive FAQ section for quick answers to common questions about Email API/SMTP setup, integration, and best practices.

Troubleshooting Guide

Step-by-step solutions for common issues including authentication errors, domain configuration problems, and delivery issues.

Common Issues

Authentication & Access

• 401 Unauthorized Error - Fix API token and authentication issues
• Domain Not Allowed - Resolve domain verification problems

Email Delivery Issues

• From Header Mismatch - Fix sender address configuration
• SSL Cipher Error - Resolve SSL/TLS connection issues
• Office 365 Quarantine - Handle Microsoft email filtering

Getting Help

Self-Service Resources

1. Check the FAQs for quick answers
2. Review the Troubleshooting Guide
3. Search our documentation using the search bar
4. Check our API Reference

Contact Support

If you can’t find the answer you need in our documentation or something doesn’t work as expected, feel free to contact our support team and speak with an agent, we’re here to help.

If the information provided (including AI responses) doesn’t fully resolve your question or your case requires a closer look, our team can review your setup and assist further.

You can get in touch with the Mailtrap Support team using one of the following ways:

• From your Mailtrap account

1. Log in to your account here.
2. Go to the Help Center > Get Help
3. Click Start conversation.

• Email us at 📧 [e-mail]

Whether you need technical assistance, help troubleshooting interface or account-specific issues, or simply want to talk to customer support, our team will be happy to assist you.

Before Contacting Support

Please have the following information ready:

• Your account email
• Error messages (exact wording)
• Request IDs from email logs
• Steps to reproduce the issue
• Screenshots if applicable

Feedback & suggestions

We welcome technical feedback and contributions that help us improve Mailtrap’s functionality and documentation. Please use the appropriate channel depending on the type of request.

Bug Reports

If you encounter a product issue or unexpected behavior, please Contact Support.

To help us investigate efficiently, include:

• A detailed description of the issue
• Exact reproduction steps
• Relevant stream, domain, sandbox, or account details
• Timestamps (including timezone)
• Screenshots or logs if available

Feature Requests

For product improvements or new feature proposals, use our Public Roadmap portal.

There you can:

• Submit a new feature request

• Upvote existing requests

• Subscribe to updates for specific requests

Documentation Improvements

If you identify unclear, incomplete, or outdated documentation:

1. Use the feedback widget located on the right-hand side of the page to rate the article:
2. Provide specific feedback describing what should be corrected, clarified, or expanded

This helps us continuously refine our docs.

GitHub & Technical Collaboration

For open-source projects, SDKs, or public repositories, join us on GitHub.

Quick Solutions

Can't send emails?

1. Verify your API token is correct
2. Check your sending domain is verified
3. Review your sending limits
4. Confirm your integration is properly configured

Emails not reaching inbox?

1. Check email logs for delivery status
2. Review bounce categorization for issues
3. Verify SPF, DKIM, and DMARC records
4. Check if recipients are on suppressions list

Integration issues?

1. Review the API integration guide
2. Check the SMTP integration guide
3. Test with Email Sandbox first
4. Use our API reference for detailed endpoints