Osx mail hangs when threat found

Hi Christoph,

Without me being able to see what is happening it is hard to estimate what the situation is.

Please provide me the screenshots of the error/threat messages. You can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions.

To take a screenshot in MAC, please follow the below instructions :

1. To capture the entire screen, press Command-Shift-3. The screen shot will be automatically saved as a PNG file on your desktop with the filename starting with Picture followed by a number, example Picture 1, Picture 2, and so on.
2. To copy the entire screen, press Command-Control-Shift-3. The screen shot will be placed on your clipboard for you to paste into another program like PowerPoint, Word, Photoshop, etc.
For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions.

Hi,
after several days of severe problems with Mac Mail App in High Sierra I identified Avg for Mac (free) as the problem. 
I added my IMAP email account and started syncing my mailbox and archive folders. 
There are some threats that are found by avg and put in quarantine. The problem is that mail stops processing and doesn’t sync the remaining emails. The only solution I found so far is to exclude the folder home/library/mail/v5. Now email works fine and does a full sync but also loads all threats to disk. Afterwards I do a check of that v5 folder and remove the files. 
Any better solution?

Hi Christoph,

Without me being able to see what is happening it is hard to estimate what the situation is.

Please provide me the screenshots of the error/threat messages. You can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions.

To take a screenshot in MAC, please follow the below instructions :

1. To capture the entire screen, press Command-Shift-3. The screen shot will be automatically saved as a PNG file on your desktop with the filename starting with Picture followed by a number, example Picture 1, Picture 2, and so on.
2. To copy the entire screen, press Command-Control-Shift-3. The screen shot will be placed on your clipboard for you to paste into another program like PowerPoint, Word, Photoshop, etc.
For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions.

Hi Christoph,

Thank you for providing me the detailed information.

I've sent you an email with the instructions to send us the Logs so that our Senior Team can analyze the issue. Please check your Inbox and Junk/Spam folders.