# Sending with MailSlurp
MailSlurp can send emails and attachments from any inbox you create. You can send email with MailSlurp using the Dashboard's compose page, the REST API or the SDK libraries directly from applications or tests.
To send an email with MailSlurp you must have at least one inbox to send from. Creating an inbox is easy and can be done with the API or Dashboard UI.
Register a custom domain to send emails from a domain name that you own.