Subject: [Action Required] You have 6 undelivered Incoming Messages MICROSOFT
Attention: k…u Outlook Mail server Detected you have  undelivered incoming emails on 13-Aug-2018,this is because your account storage is full, your action is required for them to be delivered
Kindly follow the self service instructions below to rectify the issue:
Release Pending messages to inbox.
Source: email@example.com Office365 Support
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