What Is Email Validation and Why Does It Matter?
Email validation ensures an email address is real, active, and safe to send to. It’s essential for protecting your sender reputation, improving deliverability, and avoiding bounce penalties from platforms like MailChimp or Constant Contact.
SigParser goes beyond basic checks by using real-world engagement signals—like recent replies or bounces—to accurately score your contacts and help you reach real inboxes.
Why It Matters for Email Marketing
🛡️ Protect Sender Reputation: Sending to bad emails can damage your domain reputation and lead to blacklisting.
📬 Improve Deliverability: Reach real people, not dead ends.
📉 Reduce Bounces: Avoid being penalized by ESPs (Email Service Providers) for high bounce rates.
⚡ Clean Lists Faster: Eliminate bad addresses before you hit send.
How It Works
SigParser combines technical checks and real-world signals for smarter email validation:
Syntax & Domain: Checks formatting and whether the domain exists.
Mailbox Status: Verifies if the inbox is deliverable and not flagged as spam.
Engagement Signals: Detects recent interactions or bounces from your team.
This hybrid approach ensures more accurate results—flagging emails as Valid, Catch-all, or Invalid so you can prioritize high-quality contacts.
Email Validation Status
Valid: this email address is active and can receive emails.
Invalid: this email address doesn't exist or cannot receive emails.
Catch-all: the email domain is configured to accept all emails, even if the mailbox does not exist.
Email Validation Score
SigParser will also provide a confidence score for the validated email. The more recently an email address was validated, the higher the validation score.
A score of 1 typically indicates a "catch-all" domain, meaning the server accepts all emails but doesn't confirm individual inboxes. If there was recent engagement (a received email) from a catch-all mailbox, it may score higher.
Catch-all emails are considered verified and will use credits.
Enrichment Credits
Each email validation requires 1 credit per record. You can purchase credits in your SigParser account.
10,000 credits ($0.01 per credit) - $100
50,000 credits ($0.01 per credit) - $500
100,000 credits ($0.009 per credit) - $900
250,000 credits ($0.008 per credit) - $2,000
💡 Enrichment credits offer flexible, pay-as-you-go control—perfect for managing budgets, testing smaller batches, or targeting only your highest-value contacts.
If you have any questions, send us an email at support@sigparser.com. You can also book a demo session HERE.