Why this matters
A mailbox can have its own limit even when the wider account has capacity.
Step by step
- Identify the affected mailbox and available quota information through its authorised tools.
- Review retention and archiving needs with the mailbox owner or ask about capacity; do not delete mail without approval.
- Test receipt after the agreed action and confirm older required messages remain accessible.
Keep the result of the final check and any unresolved question with your project records.
Availability depends on the product, permissions and management agreement. Use the existing support conversation for the same issue.
