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Yesterday, I got an email from my university about a library workshop. I checked it in the Windows 8.1 Mail App. The email came with an exclamation mark in the top right corner.
What does the exclamation mark mean, and can I remove it? It's the only email in my inbox with that. The email's not flagged, and it's not spam. Everything in the email loaded correctly, so it's not causing problems. I googled "windows 8.1 mail app exclamation mark", but I didn't find anything related. My guess is that it's either a sync problem or somehow a high priority email.
1It means the email was sent as "high-importance". You cannot remove it because its meta-data of the email itself. – Ramhound – 2016-10-18T17:23:04.163