1
Get a free key
No signup, no email required. The key is shown once and is not recoverable.
Read endpoints work with no key at all — you can skip this step and still
call the API. A key raises your limits 5-10× and unlocks long-polling, which
is the feature you actually want. See Authentication.
2
Generate an inbox
GET /api/v1/domains lists the domains that accept mail.3
Wait for mail to arrive
Pass
wait and the server holds the connection until mail lands, up to 30
seconds. No polling loop.4
Read the full body
The list endpoint returns summaries without bodies. Fetch one email for the
text and HTML parts plus attachment metadata.