Overview

Mimecast Held Messages (also known as Quarantine) are emails that have been temporarily held because they may be spam, suspicious, or do not meet security policies.

These messages are not delivered to your inbox unless you review and release them.

How Long Are Messages Held?

• Held messages are stored for 14 days only.

• After 14 days, they are automatically deleted and cannot be recovered.

It is important to review your held messages regularly to avoid losing important emails.

How to Access Held Messages

You can view your held messages in two ways:

Option 1: Mimecast Personal Portal

1. Open the Mimecast Personal Portal (via link or quarantine notification email).

2. Log in with your company credentials.

3. Navigate to your Held Messages / Quarantine.

Option 2: Quarantine Notification Email

• Mimecast sends periodic emails listing held messages.

• Use the links in the email to take action مباشرة (Release, Permit, Block).

Actions You Can Take

1. Release a Message

• Select the email.

• Click Release.

Result: The email will be delivered to your inbox.

2. Permit (Allow) a Sender

• Select a trusted sender.

• Click Permit.

Result: Future emails from this sender will be allowed.

3. Block a Sender

• Select an unwanted email.

• Click Block.

Result: Future emails from this sender will be blocked.

Important Notes

• Messages are automatically deleted after 14 days if no action is taken.

• Not all blocked emails appear in quarantine—some may be rejected entirely.

• Always verify the sender before releasing or permitting messages.

Best Practices

• Check your held messages regularly (daily or when notified).

• Only release emails from trusted sources.

• Use the Mimecast Report Message button in Outlook for suspicious emails.