3 ms·
Maybe you should ask how http://sendgrid.com/ http://sendgrid.com/ do it. Probably like terra_t said, with tons of SMTP senders in parallel.
by maushu 16y ago
Maybe you should ask how http://sendgrid.com/ http://sendgrid.com/ do it. Probably like terra_t said, with tons of SMTP senders in parallel.