I have sent, he/she has sent, we have sent, they have sent.
have been sent
has been sent
he was sent by a king of France
sent...it is the same:)
Will be sent
It can be sent.
had sent They had sent the email yesterday.
When it appears in the " sent items" if its not sent it will be in "outbox"
Both are correct, the only difference is that "has sent" is in present tense and "had sent" is in past tense.e.g. Mike has sent me a letter. (present tense)Mike had sent me a letter. (past tense)
Sent is the past of send.infinitive: sendpast: sentpast participle: sent
You cannot. Once mail is sent it is sent.