Almost every application nowadays involves sending emails in one or another form. Even the simplest web site will probably require some kind of user management that will send confirmation/forgotten password emails to its users. This can grow to sites sending thousands of emails every month, be it in the form of a newsletter or any other types. A typical approach from developer’s point of view is either to set up a local SMTP server or use a public one (f.x., Gmail). This approach works fine, however it can cause problems when the number of (simultaneous) emails to be sent out increases. Continue Reading…