Miss Manners would have you text back that you are “Glad they are enjoying the gift.” This will reassure the sisters-in-law that you have no quarrel with them -- while its brevity relieves you of ...

Affectionate and aggressively earnest, these follow-up messages — dubbed “millennial thank you notes” — are flooding group chats and inboxes with a tidal wave of feelings.

The text you send your friends after spending time with them can reveal a lot about your relationship — and even speak to ...