Tips to reduce hard bounces in your email campaign:

Clean up your database

After every campaign, go through your email database and check the hard bounces. Separate the hard knocks from the active responses. Have a second look at the email address for typos, wrong domain names etc.

Confirm email addresses

Send email confirmation to those subscribers who have joined your mailing list. This reduces inadvertent entries in your mailing box. Any bounces in this first screening will help you to cut down on the wrong ones joining your database.

Update customers' details

On an average 3% of the customers data churn in a month. To make good the change, give upfront information on you webpage for users to update their contact details. This will reduce email bounces from customers who have taken new email address.

Monitor delivery rates

Track-back the bounce rates from the mailing. Segment bounces from each domain. This help you to track the abnormal bounce coming from one domain. Too many number of returns from one domain could be as a result of blacklist or spam filter.

Check spam lists

Monitor the public spam databases or blacklists to ensure that your email service providers is not included in such blacklists.

Test emails before you fire

Time is short and pressure to show positive figures can make you blast emails one after another. Such unrestrained email campaigns can adversely effect the entire lot. Instead, test your email campaign on major email clients to see how your email looks before the real blast.

And finally....

Despite doing all you can to salvage a valuable prospect information,you'll end up on the dead beat. In such cases, it's better to remove such die-hard bounces from your email mailing list.