Ask What makes an email bounce?

[Neckyj]

An email bounces when it cannot reach the recipient. Invalid addresses cause emails to bounce. Full inboxes block your messages. Incorrect domain names lead to bounces. Server issues can reject your emails. Spam filters sometimes block your emails. You must check for typos in addresses. Expired accounts cause emails to fail. A poorly formatted email may also bounce. Large attachments can exceed size limits. You should verify your email list regularly. Hard bounces occur when the address is invalid. Soft bounces happen due to temporary issues. You reduce bounces by keeping your list updated. A clean list ensures better delivery.

 

[Anthony Joshua]

What makes an email bounce is usually an issue with the email address or the receiving server. From my experience, the most common reason is sending to an invalid or non-existent email address. Things that helped me were checking for typos, removing old contacts, and using an email verification tool. Server problems, blocked IPs, or missing authentication can also cause bounces.