Cold Emailing SaaS Like Instantly

Hello Freelancers,

I am looking for something very similar to Instantly.ai both in terms of features and functionality, for a SaaS cold emailing web application.

Some of the Features of Instantly.ai are:
Adding Unlimited Email Accounts
Campaign Creation
Email Inbox
Email Scheduling
Email Tracking And Anaylsis
Email Warmup
Importing Contact List

Please bid only after you have gone through Instantly.ai to understand my requirments completely. I need something very similar to it.

Regards,
Syed