There is no way within the SmarterMail webmail interface to copy an email to another folder. I often copy messages to other mailboxes, not just folders, for various reasons. Usually, I do this when I need to have a message picked up by my ticketing system (currently WHMCS, but soon to be the same in SmarterTrack). I don’t always want the message to be moved so I copy the message to the support email Inbox but I can only do this within my email client (eM Client). I can do this with a right-click and selecting “Copy to folder” or by holding the “Ctrl” button while dragging the message to the folder.

The webmail doesn’t have any kind of a copy option. Additionally, the icon the webmail shows when moving a message is the icon most commonly associated with copying, not with moving.

Solution: 

Implement a copy function within the webmail in the following ways:

Additionally, the icon used when moving a message shouldn't be the “plus” sign, which normally denotes copying.