eMClient impossibly slow and "command has no tag error"

My eMClient has become unusably slow - up to 30 minutes to retrieve messages from Yahoo when I log in, and several minutes to retrieve the contents of individual messages.

I am getting an error message “[IMAP] bad [CLIENTBUG] Command has no tag set” but unfortunately that means nothing to me. I would be grateful for some help



If you use Yahoo with IMAP setup, I would then suggest to go to “Menu / Accounts” and remove and re-add your Yahoo account via the automatic email wizard.

Also check you have the latest version of eM Client via the version history page.

Note: Before doing anything backup first though in eM Client via “Menu / Backup”. You can see when the backup is completed via “Menu / Operations”.