Q. If one was asked by a friend who is unable to come to shul to say Izkor for his parents, but didn’t open the email or forgot the request. What should he do? Does he have to inform his friend that he didn’t comply with his request?
A. It stands to reason as mentioned in the earlier question 3125, that when he has the opportunity and it is permitted to recite a Kel Male Rachamim by the reading of the Torah, he should do as he was requested.
Horav Aharon Miller Shlit’a also maintains that he does not have to tell his friend that his request was not met, as it may create unnecessary issues of stress and tension between them.
Rabbi A. Bartfeld as advised by Horav Aharon Miller Shlit’a