Thunderbird: Automatically mark all messages as read in Drafts folder
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I am using "Send later" to, well, send some eMails later. One annoying thing is, that it saves the message in the Drafts folder as an unread message. Does someone has an idea how to change this behavior (except for asking the author of "Send later").

Spontaneously I thought of somehow abusing filters to achieve this behavior. The problem here of course is, that one cannot run filters automatically after one *sends* an eMail but after one *receives* an eMail.

Of course I see the option of just right-clicking the "Drafts" folder an then clicking "Mark Folder read" but I think there should be an automatic way to do this. 

Thank you in advance for any suggestion!

I am using "Send later" to, well, send some eMails later. One annoying thing is, that it saves the message in the Drafts folder as an unread message. Does someone has an idea how to change this behavior (except for asking the author of "Send later").

Spontaneously I thought of somehow abusing filters to achieve this behavior. The problem here of course is, that one cannot run filters automatically after one *sends* an eMail but after one *receives* an eMail.

Of course I see the option of just right-clicking the "Drafts" folder an then clicking "Mark Folder read" but I think there should be an automatic way to do this. 

Thank you in advance for any suggestion!

P.S.: Now after posting it, I realize that stackoverflow may be the wrong page :-/ sorry for any inconvenience! Maybe a lot of you guys uses thunderbird or has programmed some extension regarding my question?