user is overquota
Mailbox Full (user is overquota)
The recipient’s iCloud mailbox is full and cannot accept new mail.
iCloud storage is shared across email, backups, and files. When usage hits the limit, mail is temporarily rejected until space is freed.
Severity
WARNING
Provider
Apple Mail (iCloud)
Last Reviewed
2025-06-01
How to Fix user is overquota
Follow these steps to resolve this Apple Mail (iCloud) SMTP error and restore normal delivery.
- ✓Retry for a few days; most recipients will free space quickly.
- ✓Pause marketing mail for that contact if the issue persists for weeks.
- ✓Offer alternate channels (SMS, app notification) for time-sensitive notices.
- ✓Encourage high-value contacts to upgrade storage or clean their mailbox.
Helpful Resources
More Apple Mail (iCloud) SMTP Codes
Keep these related troubleshooting guides handy while addressing user is overquota.
Still experiencing Apple Mail (iCloud) delivery issues?
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