This is a small error in displaying information, how many private messages were DELETED. Not a functional error, just wrong info displayed after the action.

INBOX: if I select 1 or 2 items, and press DELETE SELECTED, all are properly deleted, but the popup info box says "0 messages deleted".

SENT ITEMS: similar error, but when I selected 2 items and deleted them, info popup said "1 message deleted".

(Update: this is for version 3.1.13)

Issue will be fixed in 3.1.14