Click on the Add Delegate Mailboxes button from the top toolbar. Any current delegates for the primary address are listed. Click on the Add Delegate Mailbox button to select the delegate mailbox address. Click the Lookup button to the right of the 'Delegate Mailbox' field. Type the Name or Email Address of the delegated address in the Search field. Mimecast Outlook Essentials is bringing our most used feature to more platforms! The add-in allows you to report suspicious messages to Mimecast for analysis and to an internal mailbox (when configured. Mimecast for Outlook must be connected to an Exchange or another email account. If using a non-exchange account, see the Mimecast for Outlook: Google G-Suite, IMAP and POP Account Support page. The Mimecast for Outlook functionality is only applicable to the primary account configured in Outlook.

Problem:

An Outlook add-in (e.g. one of the add-ins installed as part of a CodeTwo product) is not visible in Microsoft Outlook after installation.

Solution:

To solve this problem, you need to delete the extend.datfile from the user's profile and check if the add-in is not listed among the disabled items.

Deleting the extend.dat file

If you are using Microsoft Outlook 2010 or 2013, skip this part and go to section Check the Disabled Items.

Mimecast Tab In Outlook

To remove extend.dat, follow these steps:

1. Close Outlook.
2. In Windows Explorer,choose the Tools > Folder Options, go to the View tab and select Show hidden files and folders.

3. Go to the folder:

   where <user> is the name of the user account for which the problem occurs.

4. Find the file extend.dat in this folder, and delete it.
5. Restart Outlook.

Checking the disabled items

To check whether an add-in is listed in the disabled items in Outlook, you need to:

Microsoft Outlook 2003 users:

1. From the top menu choose Help > About Microsoft Office Outlook.
2. Click Disabled Items.
3. If the add-in is included on the list, select it and click Enable.
4. Restart Outlook.

Microsoft Outlook 2007 users:

1. Choose Tools > Trust Center from the top menu and click the Add-ins tab.
2. From the Manage drop-down menu, choose Disabled Items and click Go.
3. If the add-in is included on the list, select it and click Enable.
4. Restart Outlook.

Microsoft Outlook 2010, 2013, 2016 users:

1. Choose File, Options from the top menu and go to the Add-Ins tab.
2. From the Manage drop-down menu, choose Disabled Items and click Go.
3. If the add-in is included on the list, select it and click Enable.
4. Restart Outlook.

Mimecast is the college's email filtering software. There is a plugin included for Outlook to allow greater control over the service from inside of Outlook. It requires you to enter your username and password to function. The below steps will outline the process.

5 Steps total

Step 1: Open Outlook

Open and access the 'Mimecast' option on the menu bar.

Step 2: Account Options

Click the gear icon labeled 'Account Options.'

Step 3: Setting Credentials

In the accounts menu, look for the 'Domain Authentication' grouping and click on 'Set Credentials.'

Mimecast Plugin Outlook

Step 4: Enter Password

Enter your password into the provided field. It is the same one you would use to log into the remote server or an office computer.

Mimecast Add In Outlook 2016

Step 5: Completed

Mimecast Outlook Download

Once you've saved your password in the credentials field you'll be able to access the more advanced features of Mimecast.

References

• Mimecast Services for Outlook

3 Comments

Mimecast Plugin Outlook Mac

• Poblano
  BinaryBoy87 Feb 4, 2014 at 11:00pm

  Thanks for this.....I'm about to setup this toolbar here shortly for my environment. Couldn't you set this up with Group Policy though?

• Jalapeno
  AndroidChris Feb 5, 2014 at 05:38pm

  Very neat tutorial, thanks for the info, will definitely use it.

• Serrano
  Jason3154 Sep 23, 2020 at 03:21pm

  Just a Gotcha - Outlook plugin + sending secure messages + from a shared mailbox.

  Astor bidet cb 1000 parts manual. we use some Shared Mailboxes in exchange, i.e. users can use their own mailbox jason@domain.co.uk or from the shared mailbox TheTeam@domain.co.uk.

  The plug in appears to work, but actually does not send the e-mail as a secure message. We have raised this with Mimecast without getting a resolution. We think it is dangerous as users feel they have followed the process correctly.

  Regards, Jason