PHP email and SPAM alternative approaches
1673
How do you make sure email you send programmatically is not automatically marked as spam?
82063
Gmail and Hotmail marked as spam
86962
What is the best Java email address validation method?
141462
Should Stack Exchange have a spam filter? (Does it already and I’m not aware?)
56316
How to validate an Email in PHP?
46422
How can I prevent spam on sites which I control?
44021
How do I receive email and process it in a web application
70907
Tracking email bounces, opens, clicks
79249
anti spam field in form
3879
How to prevent mail from our website going into spam mail of users?
157313
Is it worth obfuscating email addresses on the web these days?
104130
How to send mail using PHP?
32207
Way to list "Contact Us" email address on web site, yet reduce likelihood of spam?
158403
How to avoid getting spam through a website?
38272
What Constitutes Spam?
137732
What's the best way to report SPAM user accounts?
125678
Postfix - Block email from non-existent local addresses