Retention & compliance
Keep mail for as long as your organisation needs, preserve it when required, and let the right people access another person's mailbox: all from the dashboard.
Retention policies
A retention policy permanently deletes messages older than a set number of days from the folders you choose, for example Trash and Spam. It runs on a schedule so mailboxes don't grow forever.
- Open Compliance → Retention policies and click New policy.
- Enter how many days to keep mail, and tick the folders the policy should clean.
- Leave Policy is active ticked to run it, or untick it to save it for later.
- Click Create.
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Compliance → Retention policies → New policy.
- 1Retention (days): messages older than this are deleted permanently.
- 2Folders: which folders the policy cleans, for example Trash and Spam.
- 3Policy is active: untick to save the policy without running it.
- 4Create: saves the policy. Mailboxes on legal hold are always skipped.
Legal holds
A legal hold preserves a mailbox's mail so nothing can be deleted while an investigation or dispute is ongoing: it overrides retention. While a mailbox is on hold, its mail is kept regardless of other settings.
- Open Compliance → Legal holds.
- Choose the mailbox and type a reason, such as a case reference.
- Click Place on hold. The mailbox appears under Active holds.
Holds take priorityA legal hold prevents deletion even if a retention policy would otherwise remove the mail. Remember to lift the hold when it's no longer needed.
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Compliance → Legal holds.
- 1Mailbox: the mailbox to protect.
- 2Reason: a case reference or note for your records.
- 3Place on hold: exempts the mailbox from retention policies until you remove the hold.
Delegated access
Delegation lets one person use another's mailbox: for example an assistant handling an executive's mail, or someone covering a colleague on leave. Grants and removals are recorded in the activity log.
- Open Mailbox Tools → Delegated access and choose the mailbox.
- Under Add delegate, type the person's address (a user or mailbox in your organisation).
- Tick what they may do: Manage, Read, and either Send as or Send on behalf (not both).
- Click Grant access. Change permissions later in the list and click Save, or click Remove.
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Mailbox Tools, then Delegated access.
- 1Mailbox: the mailbox you are sharing.
- 2Delegates: who already has access, and what they can do.
- 3Remove: takes a delegate's access away.
- 4Delegate email: the person to give access to.
- 5Grant access: saves the new delegate with the ticked permissions.
Audit & reports
Admin actions are recorded in the activity log. Use it to see who did what, and export it when you need a record.
- Open Activity Log near the bottom of the dashboard menu.
- Filter by action, or search by email or resource, and click Details on any row.
- To keep a copy, open Compliance → Audit log export, choose the dates and format, click Preview to see the row count, then Download.
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The activity log.
- 1Action filter: show one kind of action, for example mailbox changes.
- 2Search: by the person's email or the resource changed.
- 3Action: what was done, for example
delegate.add. - 4Details: the full record of that action.
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Compliance, then Audit log export.
- 1Start date and End date: a range of up to 366 days.
- 2Action prefix: optional, for example
mailbox.for mailbox changes only. - 3Format: CSV or JSON.
- 4Preview: shows how many rows the export will contain.
- 5Download: up to 100,000 rows per export.
Troubleshooting
If mail can't be deleted or old mail isn't being cleaned up, check Legal holds first: a mailbox under hold is skipped by every retention policy.
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Compliance, then Legal holds.
- 1Active hold: the mailbox and the reason it is held.
- 2Release: lifts the hold, so retention policies apply again.
- 3Mailbox: choose a mailbox here to place a new hold.
| Problem | Cause | Fix |
|---|---|---|
| Old mail is disappearing | A retention policy is removing it on schedule. | Review the policy's period; apply a legal hold to preserve a specific mailbox. |
| Can't delete a mailbox's mail | It's under a legal hold. | Lift the hold first (if appropriate), then delete. |
| A delegate can't open the mailbox | Access wasn't granted, or was revoked. | Grant access again under Mailbox Tools → Delegated access. |
What's next?