[rt-users] Tickets from other Ticketsystem

[Eierschmalz, Bernhard]

Hello,

we have one customer using its own ticket system. This customer sends us mails with an information about his own ticket in the subject.
i.e. [PLUS.DE Ticket#PD077994]

sometimes when this customer answers, he doesn't send our ticket number in subject, so he opens a new ticket.
Is it possible to identify a mail by this PLUS ticket number and add to our already opened ticket instead of open a new one?

Best regards
bernhard
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