Allthebest

5 clues
Good health!
Letter send-off
Well-wisher's wish
'My fondest wishes'
Generic greeting card words
Similar answers:
Allforthebest
Allthat
Allthatechoes
Allthatglistersisnotau
Allthatglitters
Allthatiam
Allthatis
Allthatjazz
Allthatjazzabouteve
Allthatlitters
Allthatw
Allthatyewcanbe
Allthe
Allthebest
Allthecoolkids
Alltheheadsand
Allthekingshorses
Allthekingsmen
Allthekingsmeninwhite
Allthepresidentswomen