[Send Mail] How do you recall a sent mail?
Go to the "Check Receipt" list on the right of the Sent mailbox to recall a sent mail.
If the email was sent to multiple people, select each email to recall.
However, email delivery can only be recalled if the email was sent to a Kakao Mail user and if it has not yet been open. The sent email cannot be recalled in the following situations.

[When sent emails cannot be recalled]
① If the recipient deleted the email without reading it
② If the email is being delivered
③ If the recipient changed the email status to [Read] without reading it
④ If the email was sent to you
⑤ If the email was sent to an email address other than Kakao Mail
⑥ If the email address does not exist