Email Deliverability Warmup Software

We are looking to develop a software/platfrom similar to www.warmy.io

Some more similar services include:
mailivery.io
warmupyour.email
www.lemwarm.com
inboxally.com
www.mailflow.io
www.mailreach.co
www.mailwarm.com
www.warmbox.ai
www.warmupinbox.com
www.warmy.io

If you understand the services offered by above sites and can come up with a solution. Please connect.