Inbox-placement seed testing

Seed testing sends a real email to a small list of seed inboxes you control (across Gmail, Outlook, Apple and more) so you can catch a delivery problem on a test list, not your whole audience.

Add seed addresses

curl https://api.wezend.com/v1/seed-test/addresses \
  -H "X-API-Key: <key>" -H "Content-Type: application/json" \
  -d '{ "address": "seed.gmail@yourdomain.com" }'

List them with GET /v1/seed-test/addresses.

Run a test

curl https://api.wezend.com/v1/seed-test/run \
  -H "X-API-Key: <key>" -H "Content-Type: application/json" \
  -d '{ "subject": "Preview", "html_body": "<h1>Hello</h1>" }'

Requires the send scope. Delivery and opens are tracked per address, automatically. Review results with GET /v1/seed-test/runs and GET /v1/seed-test/runs/:id.

Scope note

Automated inbox-vs-spam folder detection needs IMAP access to your seed inboxes (an ops integration). Until that's wired, delivery and open tracking are automatic and folder placement is recorded manually. Pair this with the DNS checker and domain warm-up before large sends.