Send email into the void

A free SMTP testing sink. Point your application at SMTPVoid, send mail to any address, and watch it arrive in your virtual mailbox instead of the real world.

How it works

  1. Create a free account and generate SMTP credentials.
  2. Configure your application to send mail through this server using those credentials.
  3. Messages to any recipient are captured into your private virtual mailbox.
  4. Each message shows how it arrived: plaintext STARTTLS or implicit TLS, including TLS version and cipher.
  5. Messages self-destruct after 1h 0m. Nothing is ever stored on disk or delivered to a real mailbox — this service cannot be used to send actual email.

Endpoints

SMTP (plaintext + STARTTLS)
0.0.0.0:587
SMTPS (implicit TLS)
0.0.0.0:465
Authentication
AUTH PLAIN and AUTH LOGIN

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