Paid postal services

• What mail service to choose
• Mail servers of Runet
• Free mail list
• Paid postal services
• Mail on your domain

Pros:

• Unlimited mailbox, as much as you want, so much and pay. (You can also get free on Yandex.Mail and @mail.ru)

• Possibility to have your own domain name. (It's cheaper to buy a domain name elsewhere and use the Yandex or Gmail mail).

Conclusion: There is no point in paying for what you can get for nothing, and even with a prospect.