What is the difference between powerMTA and postfix/other free mta?

Question

Mail server

What are the advantages of powermta over free mail servers?
As I understand it, pmta wins only in sending speed?
If we are talking about sending 1-2 thousand letters a day, then the meaning in powermta disappears?
Thank you!

Answer 1

distribution speed depends on several parameters
- time spent on queuing the message
- time in the queue
- time spent on establishing a connection with the receiving side (including DNS, HELO and TLS)
- time spent on sending the message to the receiving side
- the channel must be at least 50 Mbit / s
- we send out hardware and OS

and 150K in one mailing, so 1-2K should fly away with a whistle
and postfix copes with this perfectly. It makes no sense to pay money IMHO
P.S.
postfix can multiinstance, which, with the appropriate settings, also adds speed with the appropriate channel width