The recipient of what? The recipient of visitors, letters (messages), titles (e.g. PhD) or all of these are possible for "Der Empfänger"?
Empfänger implies a delivery, therefore it's most likely a letter or postcard.
Exactly, I was about to say wtf?! myself. So "die Grusse" can mean greetings as in a postcard. Didn't realise until now, now it makes sense :)
i'd like to write the salutation(s)
I agree totally!