Send Test Emails
Simulate different events by sending test emails.
How to send test emails
During development, it’s important to test different deliverability scenarios.
Example: When an email hard bounces or is marked as spam, it’s important to stop sending emails to the recipient, as continuing to send emails to those addresses will damage your domain reputation. We recommend creating a webhook endpoint to capture these events and remove the addresses from your mailing lists.
When testing, avoid:
- sending to fake email addresess
- setting up a fake SMTP server
We provide the following test email addresses to help you simulate different email events without damaging your domain reputation. These test emails enable the safe use of Resend’s Dashboard, Webhooks, and API when developing your application.
Test delivered emails
To test that your emails are being successfully delivered, you can send an email to:
Test bounced emails
To test that the recipient’s email provider rejected your email, you can send an email to:
This will generate a SMTP 550 5.1.1 (“Unknown User”) response code.
Test “Marked as Spam” emails
To test that your emails are being received but marked as spam, you can send an email to: