Errors emptying Trash folder

For the past two years, every time that I empty the trash folder there are errors, or the folder is empty for 20 seconds then most of the trash comes back, or when I rebuild an empty trash folder suddenly it finds many old trash items and displays them again. 

Hello Anna, what kind of errors are you referring to, can you please make a screenshot of the error and submit it to us here on the forum for more information? What mail service are you using with eM client?

What version of eM Client do you have currently installed on your computer, can you please check the exact release number in Help > About?

Regards,

Sometimes there’s an error, most of the time deleting doesn’t work.  right click trash empty folder and the messages are clear momentarily, but come back at 10 at a time, just like when downloading messages in the inbox. 

Hello Anna,
please include the answers to the questions Paul asked - namely what kind of accounts you have set up and how and your eM Client release number.
Are there any error message?

Best regards,
Olivia