"forwarding" should also be accepted IMO.
What about " the offer". Certainly frequently to be seen "This week's special offers" ? Perhaps more so in U.K.
Seems to be accepted now :)
Glosbe suggests "marketing," along with a number of other nouns suggesting promotion. Seriously, couldn't "marketing" also work here?
Προωθώ = verb to propel /promote (a product) / forward/ divert........προάγω = verb to promote (a person)......η προαγωγή = the promotion (person).