There is a letter from the Rambam in which tells his student to wish his wife well for him. He goes on to explain that greeting normally is not included in that which Chazal said that it is a lack of tznius to inquire about a woman’s welfare.
Furthermore, see the Aruch HaShulchan on that siman who cites a Ritva and says that these Halachos change with the times, and where people are used to it there is no issur.
oomis – +1