Email Verification & Bulk Email Sender — All Features
BounceGuard combines real-time SMTP email verification with AI-personalized cold email campaigns — one platform, two superpowers. Bring your own provider: Gmail, Salesforce, SendGrid, Mailgun, or any SMTP server.
Core Verification Features
BounceGuard checks emails at every level — syntax, domain, and mailbox.
MX Record Check
Confirm the domain has valid mail exchange records before any send.
SMTP Verification
Connect to the mail server and confirm the mailbox exists in real-time.
Spam Trap Detection
Identify and filter known spam traps to protect your sender reputation.
Catch-All Detection
Flag catch-all domains that accept any address — reduces risky sends.
Syntax Validation
RFC 5321/5322 compliant format checking catches malformed addresses instantly.
Bounce Prevention
Detect emails likely to hard bounce before they damage your sender score.
Role-Based Filtering
Filter admin@, info@, support@ and similar role-based addresses automatically.
Disposable Email Removal
Detect and remove temporary/disposable email providers instantly.
Domain Issue Detection
Identify harmful or inactive domains before they affect your campaigns.
Powerful Tools Included
Beyond single-email checks — BounceGuard gives you a full toolkit.
Single Email Verification
Paste any email and get an instant result: Valid, Invalid, Catch-all, or Domain Issue — with full SMTP + MX validation.
Bulk CSV Validation
Upload a CSV file with an "Email" column. BounceGuard processes your list in the background and delivers a labeled results file to download.
Email Finder
Enter a person's name and company domain. BounceGuard generates and verifies professional email patterns to find valid addresses for B2B outreach.
Email Extractor
Paste any block of text — websites, documents, or data — and BounceGuard instantly extracts all email addresses. Completely free, no credits needed.
REST API
Integrate email verification directly into your application with our simple POST endpoint. Generate an API key from your dashboard and start verifying instantly.
Usage Dashboard
Track all your validations, credits used, validation breakdown (valid/invalid/risky), and download your full history — all in one place.
Send Campaigns Using Your Own Provider
BounceGuard adds the campaign interface on top of providers you already trust — Gmail, Salesforce, SendGrid, Postmark, Mailgun, Resend, or Elastic Email.
AI-Personalized Emails — Every Recipient Gets a Unique Email
Upload your Apollo.io CSV — BounceGuard's AI reads each recipient's role, company, and industry and writes a completely unique, human-sounding email per contact. Not a template, not mail-merge. Supports 12+ industries: SaaS, medical billing, construction, e-commerce, legal, finance, and more.
Bring Your Own Provider
Connect Gmail, Postmark, SendGrid, Resend, Elastic Email, Mailgun, or Salesforce. Zero markup — you pay your provider directly.
Validate Before Send
Toggle ON and BounceGuard verifies every recipient before sending. Invalid emails are skipped automatically — zero bounces.
Smart Scheduling
Send in batches across hours or days. Hit inboxes during peak hours and avoid spam filters with a single large burst.
Unsubscribe Management
CAN-SPAM compliant unsubscribe links auto-added. Opt-outs permanently blocked from all future campaigns automatically.
Campaign Analytics
Per-campaign reporting: sent, failed, skipped, unsubscribed. Track performance across all providers in one dashboard.
Salesforce +2,500/Day Bonus
Connect a Salesforce org and add 2,500 extra sends/day on top of your existing SF limit. Stack orgs to scale further.
How Our Verification Works
BounceGuard runs multiple checks per email — not just a format check.
Multi-Layer Checking
We check syntax first, then verify the domain has valid MX records, then connect via SMTP to confirm the specific mailbox exists — all without sending an actual email.
Spam Trap Database
Our system maintains a regularly updated database of known spam traps, honeypots, and disposable email providers. Any email from these sources is instantly flagged.
Greylisting Handling
Some servers temporarily reject unknown senders (greylisting). BounceGuard uses smart retry logic to handle these cases accurately instead of marking them as invalid.
Real-Time Results
Single emails return results in seconds. Bulk lists up to 50,000 addresses typically complete within minutes. All results are downloadable as CSV files.
Get in Touch
Have questions about BounceGuard? We're happy to help.
Contact Information
Have a question about our email verification tools, API, or pricing? Send us a message and we'll get back to you.
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