On most email servers marking an email as 'archived' sends it to a specific folder on the server called 'archive'.

In the Zoho implementation, apparently each individual folder has a hidden 'archive'. Deleting that specific folder deletes apparently all the mail in the associated/attached 'archive' of that specific folder.

I just discovered this by accident after first sorting hundreds of email into individual folders, then changing my mind & tagging/archiving the emails, then deleting the apparently empty folders... all the mail is completely and utterly lost. =>An empty folder is not actually empty but contains a hidden 'archive' <=

Steps to reproduce:

1) Move an email into an 'empty' folder.

2) Select email & click 'archive'.

3) Delete the now 'empty' folder.

4) Empty trash.

5) Congratulations your email is gone forever, not in an 'archive' where you just elected to send it.

How ridiculously counter intuitive!

I just lost hundreds of irreplaceable email.