I am trying to write a motivation letter and in this sentence I am not sure which preposition is appropriate for "mailing list". Would you please help me?
To clarify the case, I am subscribed to a mailing list which a John Doe used to distribute an ad about a vacancy. I am going to apply for that position and try to state that I have been informed about the position via the mailing list. This is sentence I have used: is "in" appropriate? Or should I use another preposition or another sentence structure to state that?
I was informed about this position by the ad sent by John Doe in XXX mailing list.