I have a list of over 5000 Microsoft email addresses that I need to email. I tried Instantly but got 0 replies (vs a 3% reply rate for Gmail). Is there a good tool out there for deliverability to Microsoft emails specifically?

I know Microsoft emails are hard to get past the spam filter. I'm not even sure if my emails even went to the spam filter -- they may have even been blackholed.

Does anyone know how I can get my 5000 emails through to these 5000 or so inboxes?

I'm not sure if Smartlead, Apollo etc are any different. I did see Smartlead sells Microsoft boxes so I am not sure if that helps with deliverability.