Quote Originally Posted by aatayyab
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If possible, please guide me about what data center, E-mail software, hosting platform, payment processing services etc should I use?

The question has to be asked: If you do not already know all of that or at least have a good understanding of it all then what on earth makes you think you’re in any way qualified to run a mail hosting service?

It’s like asking how to setup and run a car repair and maintenance shop when all you know is how to change a tire.

You would perhaps be better off reselling someone else’s service (for instance: Office 365 reseller) and actually learn how to run a mail service that at least has training wheels and competent help readily available.