- Does 'Mail Delivery Failed' mean my email was hacked?
- Rarely. The most common cause is a simple typo in the recipient's address, a full mailbox, or a temporarily unavailable mail server. If you receive delivery failure notices for emails you didn't send, that's a different situation worth investigating.
- Will the recipient ever get my email?
- It depends on the error type. A 'permanent' failure (5xx error code) means the message will never be delivered — you'll need to resend to a corrected address. A 'temporary' failure (4xx) means the server will keep retrying for 24–72 hours before giving up.
- Is the bounced email lost?
- Your original email is still in your Sent folder. The delivery failure notice just tells you the recipient's server rejected it. You can copy and resend to a corrected address at any time.