I have made a site where the users can subscribe to a workshop.
I want the teacher of each workshop to be able to send a mail to all his students (app 30 to 100 mail) , and sometimes I want to send a global mail to all the students (app 1000 to 3000 mail).
Now I use the library javamail with gmail, but I can't send a massive email (sending one email with many email address in bcc, app 3000 mail).
Is there a easy way to make an SMTP server in Java? And how can I make my emails avoid the spam folder?