Run seeded inbox placement checks
Send controlled probes and review whether emails appear in inbox, spam, promotions, or filtered views before customer sends.
Test whether important emails reach inbox, spam, or promotions
MailSlurp runs inbox placement checks against mailbox-provider environments so teams can review Gmail, Outlook, spam folder, promotions, authentication, and content signals before important sends.
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Check placement before important sends
Use MailSlurp to review inbox, spam, promotions, sender authentication, and repeat test results before launch.
Connect placement with sender authentication
Review content, headers, SPF, DKIM, DMARC, MX, and sender-domain context when placement results need investigation.
Measure changes after fixes
Re-run placement checks after DNS, sender, or content changes so improvement work is tied to mailbox outcomes.
See deliverability testsPair placement with rendering QA
Use inbox placement tests with device previews so critical emails arrive in the right place and display correctly.
See device previews