Send group-by-group notifications

-1	"You sent messages too frequently. Stop for a cup of tea! "
	-10	"The user does not exist"
	-100	"System error"
	-11	"The user has not passed the review"
	-12	"Private Message content is blank"
	-13	"Private Message content is too long"
	-14	"The user is not in the blacklist"
	-15	"The user has not uploaded the image"
	-16	"User frozen"
	-2	"Your private message contains improper terms. Please modify it! "
	-3	"Invalid parameter"
	-30	"Follow the user in the blacklist"
	-31	"Added follow"
	-32	"Follow not added"
	-5	"Blacklist followers"
	-6	"No Logon"
	-7	"Database execution failed"
	-8	"You cannot send private messages to your blacklist users! "
	0	"Successful"

["Window. jiaoyouerrormessage"]