Cleaned my email list ..STILL bounce :(

I used BriteVerify to clean my list so I can only speak from my experience with them.

Ummm use them.

It was fast and easy to clean my subscriber list.

Isaiah

First, try to search your mail server IP address and see if it has been blacklisted. You can use https://mxtoolbox.com/blacklists.aspx for blacklist search.

If the IP address is not found, then you are good. Otherwise, you must change your provider to dedicated IP address.

If you are using an IP address that has been blacklisted, you need to expect high bounce rate because mail server has been designed to reject email coming from those IP addresses. The email address might be valid and genuine. So it is not something MailBoxValidator or BriteVerify can help further.

The name of your SMTP used .? shared or dudicated

If you want a most reliable list cleaning, do it yourself.

Get a VPS with multiple ip and send a soft email like greetings or some kind of motivational message

No body will mark you as spam if you are not making any offers.

Then you would grab deliveries from server's logs and same way you can get bounces

Any tech on Upwork can setup this for you in under 24 hrs

A lot goes into cleaning a mailing list properly, I know..

You should take all those bounces and submit them to different places and compare the results and go with the best system

Are these bounces hard or soft or internal bounces?
Hard bounce: Email address doesn't exists
Soft bounce: mailbox is full or temporarily unavailable (server could be down, etc)
Internal bounces: Blocked by spam filters, because of contents; IP is blocked although not blacklisted

Even if your IP is not blacklisted in one of the big lists, it may still be blocked by some email providers.
I have seen my emails blocked, especially by att.net, verizone, icloud, sbcglobal ... it says the IP is on a blacklist. but when I look into the issue I see the IP has been blocked for years, last spam seen 2011 or something. These providers block an IP once it is blacklisted, but do not remove the block after the IP has long been whitelisted again. You sometimes have to send a lot of emails to get that block lifted. That's my experience.
With some like att.net I have had no success at all getting IPs unblocked.

Now if you're in a shared IP pool, there will always be offenders who abuse and get the IP on some blacklist. The removal from say, spamhouse is easy. The lifting of the block from some ESPs is hard to impossible ...