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Inbox placement: classify where a real campaign lands.

Use diagnostic seed inbox tests to classify inbox, spam, promotions, updates, delayed, and missing campaign outcomes.

What placement tests can prove

A seed test gives controlled evidence about how a campaign appears in configured inboxes. It is useful for diagnosis, but it is not a substitute for real engagement and reputation data.

Classify inbox, spam, promotions, updates, delayed, and missing outcomes.
Use a subject marker to match campaign messages.
Poll seed inboxes over IMAP for diagnostic evidence.

What placement tests cannot prove

A small seed list cannot guarantee every recipient will see the same folder. Recipient history, engagement, provider reputation, and personal filters still matter.

Good for QA

Use before major sends to catch obvious spam-folder or missing-message issues.

Good for comparison

Run before and after DNS, template, or ESP changes.

Not a warmup tool

Diagnostic seed tests do not create engagement or repair sender reputation.