Deliverability
Test the message or validate the mailbox.
Use the switch below to choose the workflow: send a real email to a WillItInbox inbox, or verify recipient addresses before you send.
Choose a tool
Deliverability workbench
Deliverability tester
Generate an inbox, send any real email to it, and get the same evidence a receiving mailbox sees: authentication, infrastructure, headers, SpamAssassin, content, links, and a prioritized fix list.
Generate a unique inbox for each test
Receive a real email from your app or ESP
Analyze SPF, DKIM, DMARC, BIMI, PTR, TLS, headers, content, and links
Open a live report with a 0-100 score and prioritized fixes