Why my emails are bouncing? 6 reasons why and how to fix it.

I have been there, you have been there, we have all been there.

You decide to create an email, then send it, and then — when you check your email reports — you see that it “bounced.”

This is frustrating.

What does this mean? Is the email like a ball that bounces around? When an email bounce it means that it never actually got to your intended recipient.


What is worse, is if your account has high bounce rates it can have a negative impact on your delivery rate.

So, it makes sense to clean up those bounced email addresses when necessary.

There are two types of email bounces — a soft bounce and a hard bounce. A soft bounce means that the email address is valid and was delivered to the recipients inbox, but it still bounced because the mailbox was full, the server was down, or the message was too large for the recipient’s inbox. A hard bounce happens when the email is permanently rejected because the email address is invalid, or the email addresses doesn’t exist.

1. An incorrect or non-existent email address

If the bounce is marked as “non-existent email address,” the email address could have a typo, or it is simply wrong. Maybe the person left the organization or email provider.

In this case, it is important to review the contacts in this category and see if there are any typos in the email address. But how do you do that with a large list? Check out the thechecker.co

2. Undeliverable email

If bounced emails are in the “Undeliverable” category, that means that the receiving email server is temporarily unavailable, was overloaded, or could not be found. This may happen for email address from small companies that host their own email servers. It may have been an internet problem or load on that server. If it happens often you may want to remove that email address from your database.

3. Mailbox full

If your contact has so many emails in their inbox that they cannot receive more, your emails will bounce back until there’s space for them. This may be an indication that address may not be actively in use.

4. Out of Office Reply

If someone goes on vacation or cannot check their email, your emails to them will bounce. This type of bounce is different. The email was delivered but the person has configured their account to send a message or prevent receiving of email.

5. Blocked email

This mean the customer has placed your email address or domain in the blacklist. So, your emails will not be delivered to them.  Sometimes this happen with a new domain if you start sending to many emails right away.  You may need to check if your email is blocked at https://www.spamhaus.org/

6. Other

Bounces that do not give the server a reason for bouncing are put in this category, so it can mean that the email bounced for something else.

You should keep an eye on your email bounce rate so you can keep a healthy list.

What you need to do to reduce your bounce rate

Monitor your bounces closely. If some addresses continually bounce, it may be time to clean your list.

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