How can I find out an incoming or outgoing letter using the IMAP protocol?

Question

PHP

I receive mail via IMAP from a gmail server.
There are many folders:
[0] => INBOX
[1] => Notes
[2] => Sent
[3] => [Gmail]/Important
[4] => [Gmail]/All Mail
[5] => [Gmail ]/Trash
[6] => [Gmail]/Sent
[7] => [Gmail]/Started
[8] => [Gmail]/Spam
[9] => [Gmail]/Drafts
[10] => Personal
[ 11] => Traveling
[12] => Work
[13] =>
Accounts
1) How can I find out if a letter is incoming or outgoing?
Of course, you can look at the sender's email, if mine is outgoing, if not, then incoming, but there is a second question.
2) If I connect to the mail through the account [email protected], and I also have an account [email protected] added to the mail. And I can send a letter from [email protected] to [email protected], how in this case can I determine whether it is outgoing or incoming?

Answer 1

You are unlikely to move emails from inbox to sent, as well as vice versa. And Gmail doesn't let you do that either.
Check if there is a letter in the "Sent" folder. If it is, then it has been sent. If not, incoming.