A hard bounce or hard rebound occurs when an ISP (Internet Service Provider) does not deliver an email to a recipient because the email address is not valid. This non-delivery is permanent, meaning the email will not be delivered under any circumstances.
Why can a Hard Bounce or hard rebound occur?
This situation can occur due to the following reasons:
The email address to which the email was attempted to be sent is incorrect or does not exist.
Because the domain associated with the email address is incorrect or does not exist.
The recipient's ISP has blocked the delivery of the email for some unknown reason.
What are the consequences of a high number of Hard Bounces?
In email marketing, the percentage of Hard Bounces is a delicate metric, as it is one of the parameters by which a mail manager categorizes a sender as Spam.
How to avoid Hard Bounces?
The best way to avoid Hard Bounces is by taking care of the quality of your lists and ensuring that your subscribers are of high quality.
Using double opt-in is one of the best methods to ensure that email addresses are correct.
Periodically, especially if you haven't sent campaigns for a while, reconfirm your list to keep the contacts up to date.
Keeping your lists clean and up to date will reduce the chances of receiving Hard Bounces. This will help to have fewer chances of your emails ending up in the SPAM folder and optimize your open rate.
What happens if my list has a high number of Hard Bounces?
If you are an Acumbamail customer, you should be aware that your list may be blocked if it receives a high number of Hard Bounces. In that case, you will need to clean it before you can continue sending email marketing campaigns.