Insights on spam filtering, bot protection, AI content scoring, and building safer web applications.https://inputgate.cloud/en-ushttps://inputgate.cloud/blog/protect-php-mail-forms-from-direct-access/https://inputgate.cloud/blog/protect-php-mail-forms-from-direct-access/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.Fri, 22 May 2026 00:00:00 GMTPHPSecurityEmail InjectionWeb FormsInputGate Teamhttps://inputgate.cloud/blog/spam-filtering-without-captcha/https://inputgate.cloud/blog/spam-filtering-without-captcha/CAPTCHAs cost you conversions. Here's how modern spam filtering works invisibly — and why it catches more spam than a puzzle ever did.Fri, 22 May 2026 00:00:00 GMTSpam FilteringCAPTCHAUXSecurityInputGate Teamhttps://inputgate.cloud/blog/why-bots-bypass-traditional-spam-filters/https://inputgate.cloud/blog/why-bots-bypass-traditional-spam-filters/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.Fri, 22 May 2026 00:00:00 GMTBot DetectionSpam FiltersSecurityAIInputGate Teamhttps://inputgate.cloud/blog/how-inputgate-stops-spam-before-it-lands/https://inputgate.cloud/blog/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.Wed, 20 May 2026 00:00:00 GMTSpam FilteringAPIHow It WorksInputGate Team