Here are the possible solutions for latter day letter clue
Answer
Clue
Relevancy
email
Clue
Latter-day letter
Definition
to send electronic mail
any
Clue
"... card, ___ card" (Last week: The two diagonally hidden 18-letter titles were "Up the Down Staircase" and "Upstairs, Downstairs." The latter answer turned downward at the D of "Downstairs.")
Definition
whichever
acai
Clue
Latter-day shampoo additive
Definition
(Tupi) a berry found in the Brazilian rainforest, aka palm berry, also ASSAI