Cold Email Working Solution

I need a Pre warmed SMTP , with Custom Domain , Just need About 3000 Emails reaching inbox daily.
These are Non Opt in Recipients , but the Subject Line/Body is Highly Relevant.
So Spam Complains /bounces will be Negligible .
Data is Sourced from

Just need the Inboxing of emails to be as Reliable as Possible.

Also some consulting on best deliverability practices , will be sending strictly according to your recommendations.

That's all . Just need "RELIABLE" delivery partner.
Ready to get started as soon as you can.

PS . If you can provide a Reliable Solution , There's a Lot More requirement for the same.
Amen to a long term Partnership.