Such a question: there is a standard set - DB with users, an email field, it is necessary to do a mailing on the basis of 3000 users.
The grandfather method is sampling, looping, sending soap.
I wonder how you can implement the mailing list differently, without forcing the sender to wait half an hour until all 3 records are passed?
In phpbb, for example, it was implemented exactly the other way, checked: 3k users, doing a newsletter - 1 second and the letters are gone.
Can they somehow send immediately to the queue to the server or how? Thank!