icloudmailagent User Caches
~/Library/Caches/icloudmailagent stores temporary local data used by icloudmailagent for iCloud Mail activity on your Mac.
What is icloudmailagent User Caches?
~/Library/Caches/icloudmailagent is a user cache folder for icloudmailagent, a background component involved in iCloud Mail use on macOS. Cache folders store temporary local data that helps mail-related tasks load faster and reduces repeated downloads or processing during normal use. Users typically encounter this folder when checking storage usage or cleaning up Library data to recover disk space. Removing cache contents usually does not delete your mail account or messages stored in iCloud, but the related component may need to recreate the data the next time Mail and iCloud Mail features are used. As a result, the first sync or message loading after deletion may be slower until the cache is rebuilt.
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Safety overview
Status: Mostly safe
This folder contains temporary cache data, not the main mailbox database or account settings. Deleting it is usually low risk, but icloudmailagent may rebuild the cache after you open Mail or use iCloud Mail again, which can temporarily increase disk activity, syncing time, or network use. Because this is tied to Apple mail services, avoid removing nearby Mail, Containers, or Preferences data unless you specifically mean to reset mail setup.
Recommendation: You can remove ~/Library/Caches/icloudmailagent if you need to free some space or troubleshoot stale mail-related cache data. Keep it if you are not having problems, since macOS can recreate it automatically and the space savings may only be temporary. If you delete it, close Mail first and expect iCloud Mail to resync or rebuild cached data on next use.
File path
~/Library/Caches/icloudmailagent
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