Question 1

How to set up Open Trashmail with Docker?

Accepted Answer

Use the Docker run command with environment variables for configuration, such as DOMAINS and URL, and mount a volume for data persistence, as shown in the quick start examples. Ensure ports 25 and 80 are exposed, and set up DNS MX records to point to your server.

Question 2

Open Trashmail vs Mailhog for email testing?

Accepted Answer

Open Trashmail is better for long-term disposable email use with webhooks and RSS, while Mailhog is focused on development testing with a simpler UI. Open Trashmail offers more integration options but requires more setup, including DNS configuration.

Question 3

Can Open Trashmail send emails?

Accepted Answer

No, Open Trashmail is only for receiving emails via its built-in SMTP server. It stores and provides access to incoming emails but does not support sending emails, so you'll need a separate service for outbound mail.

Question 4

How to secure Open Trashmail with TLS?

Accepted Answer

Configure MAILPORT_TLS, TLS_CERTIFICATE, and TLS_PRIVATE_KEY in config.ini or as env vars, using certificates from Let's Encrypt or self-signed for testing. The README provides commands for generating test certificates and details on STARTTLS vs TLS on connect.

Question 5

What are the webhook options in Open Trashmail?

Accepted Answer

It supports global and per-email webhooks with customizable JSON payloads using placeholders like {{to}} and {{subject}}, HMAC signatures for security, and retry mechanisms. Configuration can be done via API or web UI, with limits such as no localhost URLs for SSRF protection.

Question 6

Is Open Trashmail good for high-volume email processing?

Accepted Answer

Not ideal for high-volume scenarios due to its file-based storage, which may not scale well with thousands of emails. It's better suited for moderate use, like testing or automation, where email volume is lower and performance is less critical.

OpenTrashmail

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