This is the 8077th most frequent Japanese word.
宛て
"宛て" means "addressed to" or "intended for."
The word "宛て" is used in the sense of indicating the recipient of a message or item.
この手紙は田中さん宛てです。
This letter is addressed to Mr. Tanaka.
Here, "宛て" specifies the individual to whom the memo is to be directed.
そのメモは課長宛てに送ってください。
Please send that memo addressed to the section manager.
"宛て" identifies the person (here, the speaker) who should receive the communication.