Hi, I first noticed this when using Thunderbird as my mail client for my Zoho mail, that when I replied to or forwarded an email, the icon next to the email would disappear almost straight away. I then did the same with my emails directly in Zoho Mail, and again, the icons don't seem to be working (they either don't change or disappear). This has meant having to check my sent folder to make sure that my emails have been sent.

Any help would be appreciated!