Do you have port 25 open?
Do you have sufficient requirements to run postal+mautic(what is recommended vcpu and ram u suggest)?
Do you have multi ip's capability and reverse dns?
Do you have no email sending restrictions or sending limits?
Do you have ability to buy via crypto and no kyc required for services?
Do you also support to help setup queuing system for bulk email sending similiar to what onesignal does where it sends emails not all at once but in chunks over a period of time?
Will need be able to do bulk cold email marketing and also send to own subscriber list the email marketing campaigns
Also is it unlimited domains possible to connect and discard incase domain get into spam of mailboxes?
The email mail marketing campaigns are not black hat or illegal and not spammy ads, affilitate links etc
Also send coupon code as well