Set up the mail server in batches and send out the advertising mail in batches

Promote my app, and I'll give you Half of the commission.
The software functions are:
1. Apply for machine rooms in batches. You can select all machine rooms for batch application

2. Set up postfix email sending system in batches with high speed

3. Conduct domain name resolution and Ali cloud resolution in batches

4, batch generation send mailbox

5. Batch email verification