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Email readiness tool

Email Deliverability Test

Generate a temporary address, send the exact email you want to inspect, and get a practical report on the signals you can improve before sending to customers.

Prepare a private test
What kind of email are you testing?

The address accepts one message for 30 minutes. Webstudiet stores the subject and derived findings for 24 hours; Resend processes and retains the received message under its own policy.

Limit: 3 tests per hour and 5 per day per IP.

Email readiness tool

What the test checks

The report explains what mail providers can verify from the email received by Resend. It cannot promise where every provider will place the message.

01

Whether SPF, DKIM, and DMARC help mail providers trust the sender and its domain.

02

Whether the email has a clear subject, useful text versions, a sensible size, understandable links, and accessible images and headings.

03

Whether a marketing email gives recipients a clear and simple way to unsubscribe.

What the score cannot tell you

Inbox placement also depends on sending reputation, recipient engagement, complaint history, list quality, provider-specific filtering, and sending patterns. This first version does not run SpamAssassin, public blocklist checks, or paid reputation services.

Read the guide to SMTP and reliable email delivery