Click on the Mimecast tab within Outlook and then ‘on hold messages’
This will open Mimecast where you will find a folder list down the left hand side (it should automatically take you to the held emails folder)
In the preview pane on the right there should be some options to release the email
If you require the email please click on Release - you will be able to release and trust the sender or domain (@jtomlison.co.uk - this is a domain).
For your security please only release the emails unless you know personally.
Kind Regards
IT
Claire Harrow
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