What does LAYT stand for?

Question

I received a letter from a rabbi, in his capacity of leading a Jewish institution, that opened with

Dear _____, LAYT

I assume, given the context, that "LAYT" is some sort of Jewish blessing or honorific. What does it mean?

Answer 1

Kitzur.co.il has the entry

לאי"ט

standing for

לאורך ימים טובים

LAYT will be the transliteration into English.

Idiomatic Translation - "for a long and good life"

(I normally write LOY”T.)