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Email · requirements recordVerified 2026-10-05

iCloud Mail upload limit: 20 MB

Messages · Mail Drop for larger files. Per message, incoming and outgoing. With Mail Drop turned on, attachments up to 5 GB are sent as a download link that expires after 30 days.

The record

3 sourced fields · 2 source pages
File size
20 MB per message (5 GB with Mail Drop)
In their words“The size of incoming and outgoing messages (20MB, up to 5GB with Mail Drop turned on)”
support.apple.com/en-us/102198 · checked 2026-10-05 · re-check every 90 days
Also
Mail Drop files expire after 30 days
In their words“You can’t remove files already sent with Mail Drop. They expire after 30 days.”
support.apple.com/guide/icloud/add-an-attachment-mm6b1a7a10/icloud · checked 2026-10-05 · re-check every 90 days
Also
The recipient's limit still applies
In their words“If you send an email with large attachments, it might be returned by the recipient’s email service if your email exceeds the size limit set by that service.”
support.apple.com/guide/icloud/add-an-attachment-mm6b1a7a10/icloud · checked 2026-10-05 · re-check every 90 days

Related limits

EMAILGmail25 MBchecked 2026-10-05 EMAILYahoo Mail25 MBchecked 2026-10-05 AI ASSISTANTClaude500 MB · 1,000 pageschecked 2026-10-05 AI ASSISTANTGemini100 MBchecked 2026-10-05

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