# IMAP Sent folder fix, lower Transactional Send limits

Source: https://developer.nylas.com/docs/changelogs/2026-08-27-send-imap-folder-and-rate-limits/

## Fixed

- **IMAP Sent folder detection** now correctly finds Sent folders with non-ASCII names or without the special-use `\Sent` flag, so messages sent through IMAP grants are filed into the right folder instead of being missed by folder discovery.

## Changed

- **Transactional Send rate limits** have been lowered. If your integration sends at high volume through [Transactional Send](/docs/v3/getting-started/transactional-send/), check your request rate against the current limits in [Rate limits](/docs/dev-guide/best-practices/rate-limits/) to avoid unexpected `429` responses.