Q. Does one comply with the mitzva of shalach manot on Purim, if the gift is send to a non-frum yet neighbor?
A. Responsa Shraga Meir (4: 31) discuses this shailah regarding a patient in a hospital, giving shalach manos to his non religious room-mate. It may depend on the reason why he does not keep mitzvos yet, since he may have never been educated or informed on Torah values. Thus he may be regarded as a “tinok shenishba,” and only accidentally a non-believer. (See Piskei Teshuvos 695: 11).
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a