Laravel accepts many drivers for sending mail, but I can't find explanation about them neither on docs nor on internet at all, it's some kind of "black box". The only driver I really know what it does is "log", which is for testing.
Sometimes I got problems with a driver, I just randomly change to another and it magically works.
So, I would like to know the difference between "smtp", "mail" and "sendmail" drivers, the most used ones.