Back to 'Deliverability'Test emails with our test email addresses and prevent problems
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When integrating Lettermint into an application or service, you want to be certain the connection with our platform works correctly. This often happens by sending test emails to your own email address or non-existent addresses. To prevent your emails from landing in the spam folder of future recipients, we advise against sending too many test emails to your own email address or non-existent email addresses.
Popular email providers like Gmail, Outlook and Yahoo use various methods to assess emails for spam or safety. Sending test emails too frequently to these providers can unfortunately have a negative impact on future emails from your domain. It would be a shame if transactional emails no longer arrive correctly.
Use our free test email addresses
Instead of testing with your own email addresses, use our email addresses from now on. We have 5 email addresses that can be used unlimited without affecting your domain's reputation. Additionally, emails to these email addresses don't count toward your monthly usage, handy if you're on our Developer plan.
In most cases, testing with ok@testing.lettermint.co is sufficient. If you want to read (faulty) email deliveries within your own system, for example with our webhooks, then our other test email addresses can also be valuable.
| Email address | Purpose |
|---|---|
| ok@testing.lettermint.co | Delivered |
| softbounce@testing.lettermint.co | Soft Bounce (mailbox full) |
| hardbounce@testing.lettermint.co | Hard Bounce (address doesn't exist) |
| spamcomplaint@testing.lettermint.co | Delivered, but marked as spam |
| dsn@testing.lettermint.co | Out-of-band DSN bounce |
Our system processes sent emails to the above email addresses as if they were real recipients. Even in the case of a Hard Bounce you'll see this - just like with real recipients - only after sending in the dashboard. More explanation about these email statuses can be found here: Meaning of email statuses.
Emails to our @testing.lettermint.co email addresses don't count toward your usage. You can therefore thoroughly test your application and emails without worrying about usage.
View sent test emails
Sent emails to these test addresses are visible in the dashboard. You can find them under "Emails" in the menu. We always show an HTML preview of sent emails, so you can also test the design of your emails this way.
