V 8.0.2951 The "size" option is not available in the mail list

V 8.0.2951 The “size” option is not available in the mail list. I tried to add it using columns configuration, but it is missing from both lists “available” and “show”. Please help, I need this feature.

Using v8.0.2951, I just checked and was able to add the “size” column to the mail list.

My problem refers to my primary PC. I updated eMClient on my second PC as well and there I could see the size column.
I tried the repair option from eMClient but it did not help.

Have you tried uninstalling eM Client, making sure NOT to delete the database, and reinstalling?

Yes, I uninstalled and reinstalled eM Client but it did not help. The only difference was that I lost my contacts database. Fortunately I could import the database from my other PC.