Catch-all inbound email testing with SMTPBox

Test inbound workflows

If inbound email is enabled for your account, create a receiving domain for an inbox. It is a catch-all, so every alias at that domain reaches the same inbox.

Use it to test replies, support-ticket creation or address routing. Copy the domain exactly. Public inbound mail can be rejected by spam, malware, size and usage protections, and is still captured only—it is never relayed onward.