Effect of using PHP mail()
问题 I've got a project where by I send email using PHP's inbuilt mail() function, I'm only sending one email at a time with a small amount of HTML and very limited CSS (two tables and a little CSS in the head for styling), but the server seems to be doing it really slowly (so much so that the page upon which an admin sends the email frequently times out) So my question is this; does mail() put a high workload on the server (not sure if that is the right term) or is it just that the server I'm