Learn English – Will be + “-ing” continuous verb form

There is no difference in meaning here between will receive and will be receiving, and nothing in the context which requires one other than the other.

What is involved here is that (at least in the US—it may be otherwise in ‘Anglo’ Englishes) ordinary conversation has taken a dislike to will VERB: it is felt to be rather stiff and bureaucratic, perhaps because it is the form ordinarily used in official communications. The version with the progressive is ever-so-slightly softer and friendlier—not fully conversational (which would be something like you'll be getting), but a little more casual.