Hier einige Abkürzungen, die vor allem im Business Umfeld sehr gebräuchlich sind:

BRB = be right back

OOO = out of office

AWOL = absent without official license

BTW = by the way

NNTR = no need to reply

FYI = for your information

THX = thanks

PLS = please

LDL = let´s discuss live

ASAP = as soon as possible

EOM = end of message