smtp.discard.dev:495 — accepting connections
A throwaway SMTP server
for the email you're not ready to send.
Sign up, get SMTP credentials, point your app at them.
Every email it would have sent shows up in a developer-grade inbox — never in a real mailbox.
How it works
Three steps. No configuration.
01
Sign up
Create an account and generate named SMTP credentials — one per environment, per service, per branch.
02
Point your app
Drop the host, port, username and password into your mailer config. Anything that speaks SMTP works.
03
Inspect
Every message your app tries to send lands in your inbox. Rendered HTML, plain text, or raw source.
Free plan
1 credential, 25 messages a day.
7 day retention, 10 MB per message. Upgrade to Pro for unlimited credentials and messages, 30 day retention.