@muhammed_suhaile_, the first step will always be to ensure that you adhere to the spam laws in your area, and the second will be to be sure that you're adhering to the Adobe TOS.
The long and the short of it is, you absolutely can still be affected if you send to an email address that has known issues -- either that it bounced, or they marked you as spam. Just because Marketo has removed the email suspension doesn't mean that you should continue to email them.
The email suspension I was speaking of applies to your IP (which is why if you're sharing an IP address with other users, you're affected by their behavior as well -- good or bad). But your domain can be blocked, too.
If a recipient has marked you as spam, I would take that as a clear indicator that they don't want to hear from you. But, there are cases where, if you know that they want to be getting your email, you can work with someone's IT department to get your IP safelisted. But, again, you should be sure that these are people that want to be hearing from you.
Look at the bounce codes that get applied when the emails bounce -- are they structural failures? Are emails bouncing once or twice, or are they bouncing 20 or 30 times? Do the bounce reasons indicate that a user has blocked you or your email was blocked because it's coming from a known spam source? All these things should be taken into consideration when trying to figure out your next steps.
What it boils down to is that you really need a strong business case before deciding to email addresses with known issues, as, even with the best of intentions, your ability to send emails and have them land in someone's inbox can be affected by these decisions. Just because you CAN email someone doesn't mean you SHOULD.