Emailnator
6.9#17 in temporary email servicesFree planFree planWebAPI
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| Fact | Emailnator | Guerrilla Mail |
|---|---|---|
| API | The API supports generating single or bulk addresses, listing and viewing inbox messages, and deleting messages. | A public JSON API over HTTP is available, and the maker says it may be rate limited without publishing its rate limits. |
| Message retention | Free-tier messages are stored for 24 hours and then permanently deleted. | Incoming messages are kept for one hour after delivery and are then deleted unless the user deletes them earlier. |
You want what its maker publishes above — check its page for the details.
It suits people needing temporary addresses for less-trusted signups and webmasters checking mail delivery. It also fits users who need API access or custom domains.