Try to send email form different account as parameter (or token)

[benk]

hi,
i’m trying to send mail in the name of different sender each time.
i did token or parameter in the From example => From {{contact.connect_senders}} <{{contact.email}}>
and i getting error some times,
some times he send the mail, and some times he run error of "500"
why does it happen?

[benk]

the error:
correlationId = "XXXXXX"
message = "internal error"
requestId = "XXXXXXXX"
status = "error"
message = "500 - {“status”:“error”,“message”:“internal error”,“correlationId”:“XXXXXXX… (length: 153)”