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Disposable Email

and API

Email without signing up

How do I use Mailsac?

Make up any email address @mailsac.com and you can instantly receive mail. No need to sign up!

Everything is public, unless you create an account.

Learn more

About Mailsac

Mailsac is an email inbox service.

Nearly all mail is accepted.

Messages are deleted at regular intervals and thresholds.

Mailsac is cloud-scale and trusted by Fortune 500 companies.

Host your own email for free with Mailsac

Point your DNS MX records to:

PriorityHostPoints to

Free email for your custom domain

APIs and Email Testing

Mailsac was built from the ground up with a rich REST API, pop3 access, and can even send you mail over webhooks and web sockets.

Many large enterprises use Mailsac for automated testing. It scales and scales, can be used for load testing, and paid plans are not capped or metered like many competitors.