Thanks for your answer.However, this is not exactly what I mean : merging tickets will be great, but, in this example, I wanted to include an isolated mail (i.e. a mail sent to my personal inbox, not to osTicket) into an existing ticketanother example : I have several documents I want to include to a ticket, I dont have a web access to osTicket or I don't want to connect to it (when I'm on my mobile phone for example), I just have to send a mail to osTicket, mentioning ticketID in the subject, and boom, the mail and document would be included into the ticket