Failed Delivery notice received for emails you didn't send

You automatically receive a Failed Delivery Notice when a sent email is rejected by an email provider. If you do not find or remember the email that prompted the notice in your sent folder, this might be due to email spoofing and someone else put your email address in the "From" field of their outgoing email.

Email spoofing is often used by spammers to disguise their identity so that their recipients are more likely to open their email. While it's not possible to prevent someone from email spoofing, it only means they know or guessed your email address and don't necessarily have access to your account.

If you have concerns about your account security review our guide to keep your account secure.