Protect PHP Mail Forms from Direct Access and Email Injection
Your PHP contact form might be quietly forwarding spam to thousands of addresses. Here's how email header injection works, and how to close the door.
InputGate Blog
Spam filtering, bot detection, AI scoring, and building safer web apps.
Spam Filtering Without CAPTCHA: What Actually Works
CAPTCHAs cost you conversions. Here's how modern spam filtering works invisibly — and why it catches more spam than a puzzle ever did.
Why Bots Bypass Traditional Spam Filters (And What to Do About It)
Keyword lists, IP blocklists, and CAPTCHAs were built for a different era of spam. Here's how modern bots evade all three — and what defenses actually hold.
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→ How InputGate Stops Spam Before It Lands
Most spam filters run after the fact — cleaning your inbox or flagging records after bad data is already in your system. InputGate takes the opposite approach.