How to Release Emails from Mimecast

Mimecast protects our organization by holding emails that appear suspicious. Occasionally, a legitimate email may be held. Follow this guide to review and release held messages through the Mimecast desktop shortcut.

🔹 Step 1: Open the Mimecast Portal

1. On your desktop, locate the Mimecast shortcut icon or go to https://login-us.mimecast.com/ to login online.

2. Double-click the shortcut to open the Mimecast Personal Portal.

3. Sign in using your work Microsoft 365 email and password.

🔹 Step 2: Access Held Messages

1. In the left-hand menu, click Held Messages.

2. A list of emails currently held by Mimecast will appear.

🔹 Step 3: Review Email Details

Before releasing an email, review:

• Sender

• Subject

• Reason Held

• Message Preview (if available)

⚠️ Do NOT release or permit messages from unknown or suspicious senders.

🔹 Step 4: Release a Single Email

1. Select the email you want to release.

2. Click Release.

3. Choose from:

   • Release – Sends the email to your inbox one time.

   • Release & Permit – Allows the sender permanently and delivers future messages.

🔹 Step 5: Release Multiple Emails

1. Use the checkboxes to select multiple emails.

2. Click Release at the top.

3. Confirm your selection.

🔹 Step 6: Manage Senders (Optional)

• Permit Sender → Approves all future emails from the sender.

• Block Sender → Prevents the sender from sending you future emails.

🔹 Step 7: Check Your Inbox

Released emails typically appear in your inbox within 1–2 minutes.

If you do not see the released email:

• Check your Junk Email folder.

• Refresh Outlook.

• Contact IT if the issue continues.

📌 Need Help?

If you have any issues accessing Mimecast or identifying suspicious messages, contact the IT Service Desk at:
📧 helpdesk@calgiant.com