Q. This year (5781 – 2021) Purim will be on Friday. Because of the proximity to Shabbat and also the early seuda, should one comply with Shalach Manot on the night before? Can one take them to a shul before Tefilah and leave them there for the intended people when they arrive?
A. One should not deliver Shalach Monos on the night before, as it is a day mitzva (Rema 695: 4).
Mishna Berura (692: 1) quoting Mogen Avrohom maintains that the Shecheheyanu recited before the day Megila reading applies to Shalach Monos also. Therefore, Horav Shlomo Miller’s Shlit’a opinion is that one should not deliver them before reading the Megila.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a and Horav Aharon Miller Shlit’a