There are a lot of threads on this.
- if they aren't opted in, you will get some % bounce.
- 1% is really good!
- You should invalidate anyone hard bouncing more than once or twice. Your smart list will run faster.
How will I invalidate anyone hard bouncing more than once or twice? Which Marketo field needs to be used?
In addition, does the reduction in hard bounces and soft bounces help in overall improvement of email deliver ability or reputation?
We are getting 2000 hard bounces after suppressing email invalid and other fields. How to get the list of hard bounce contacts ?
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I would recommend you take a look at the below post and build a program around its practices that would benefit the way your business operates.
Thanks Kevin. This is helpful