I'm a bit confused about something that looks like a modifier/adjective.
"I meant to send you this draft instead of the one I sent you."
Does "I sent you" modify (like an adjective) the "one", so to speak, or is it actually a verb tense? If it is a verb tense, should I be using "the one I had sent you"?
"I’m emailing you about the one you sent earlier. I checked it and saw that it was the wrong attachment."
Does "you sent earlier" modify the "one", or does it actually specify time? If it does, should I say "you had sent" since "checking" and "seeing" might have happened after the sending?