if you are looking for a PHP solution to mass send emails, I found Pommo which is free and open source. That's so far what I know
I would offer you to try something like iContact.com, it is not very expensive, but very convenient - you won't have tons of problems with email campaigns (different smtp servers, spam abuses, etc)
you can get solution by PHP list by w3schools.com........its very beneficial....you can also mail by it.....
So is that means the advantage of services like iContact is their mails will never go to spam mail box?
yeah ur icontact mail will never go to spam mail box forever............, you have to use fresh and different content for mailling through icontact , otherwise it changes to go in spam mail box.......
Each Server has a way to send messages to SPAM. Maybe the words inside your message, maybe the words used in subject, maybe html code, and others. If you use iContact you message (if a not good message) can go to spam box, too. You can create a mail server in your computer with a fix ip. This is not very easy and not very useful, but can help you.