How to mentioned in mail return is filed

When mentioning a "mail return" in an email, you can use the following phrases:

1. "Return receipt requested": This phrase indicates that you want to receive a confirmation when the email is opened or read by the recipient.
2. "Read receipt requested": This phrase is similar to the previous one, but it specifically asks the recipient to confirm that they have read the email.
3. "Delivery report requested": This phrase asks the email client to provide a report on the delivery status of the email, including whether it was delivered, bounced, or rejected.
4. "Return to sender": This phrase is used when you want to send the email back to the sender, usually because it was undeliverable or bounced back.

Here are some examples of how you can mention a mail return in an email:

• "I have filed a mail return for the package that was sent to me on [date]."
• "I have requested a return receipt for this email to confirm that it was received."
• "I have asked for a delivery report on this email to ensure it was successfully delivered."
• "I have sent a return to sender for the email that was undeliverable."

Note that the specific wording may vary depending on the context and the email client being used.