Predator™ algorithm

Smart server verification.
Fewer Bounces.

BounceStrike’s Server Verification doesn’t just check if an address “looks right”, it confirms that the domain and its infrastructure can actually deliver messages. By validating DNS records, mail server health, and MX configurations, we ensure your emails reach real inboxes and not dead ends.

Our system performs real-time MX verification to confirm active mail exchange servers. If the servers are missing, misconfigured, or down, we flag the address immediately. This critical step helps you avoid sending campaigns to addresses that will bounce, saving your reputation and your budget.

Beyond MX checks, we simulate SMTP handshakes without sending a single email, giving you the most accurate mailbox validation possible. This live interaction tells us whether the mailbox is responsive and safe to accept emails — a key factor in reducing bounces and improving inbox placement.

Combined with advanced catch-all detection, BounceStrike prevents risky addresses from slipping through. Making the verification process that’s smarter, faster, and built for modern deliverability challenges. With Server Verification, you’re not just validating emails, you’re securing every send with infrastructure, level intelligence.

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Engineering

Server verification for guaranteed availability

SMTP Verification

SMTP verification goes beyond basic checks to confirm that the recipient’s server is real and ready to accept your message. BounceStrike simulates a live SMTP handshake, without sending an email, to verify mailbox existence and response accuracy.

This ensures your list is free from invalid or inactive addresses, cutting bounce rates before they happen. It also detects servers using greylisting or advanced anti-spam tactics, helping you adapt for maximum deliverability and zero wasted effort.

The outcome? A cleaner list, fewer delivery errors, and a direct line to your audience without the risk of blacklist penalties.

MX Record Check

We confirm the presence of valid MX records before any send. If the domain has no mail exchange setup, your email will fail. Our MX check eliminates such risks upfront.

DNS Verification

Before SMTP checks, we validate DNS integrity to confirm that the domain exists and is properly configured. No DNS, no deliverability.

Catch-All Detection

Some domains accept all emails, even if they don’t exist, creating false positives that harm your campaigns later. BounceStrike identifies catch-all configurations by testing responses under multiple conditions.

Knowing whether a domain is catch-all allows you to segment with precision. It prevents sending to risky addresses that may bounce unpredictably or land you on a spam trap.

A flawless result: more control, cleaner lists, and confidence that every campaign targets real, responsive contacts.

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Frequently asked questions

Stop wasting time and money on invalid addresses

Remove bounces, protect your sender reputation, and maximize inbox placement with our powerful email verification API. It’s fast, accurate, and built to scale your success.

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