- How does CampaignKit compare to competitors?
- CampaignKit uses real-time mailbox verification to ensure the highest quality results. Unlike some competitors that rely solely on syntax checking, we verify the actual mailbox exists by connecting to mail servers, providing more thorough validation.
- How do you protect my data?
- We keep submitted email addresses only during validation. No email addresses are stored on CampaignKit's servers nor forwarded to any 3rd party service. All communication is encrypted with AES-256, and we're GDPR compliant with EU data residency.
- Do you send emails during the validation?
- No. No emails are ever sent to the recipient's mailbox. We use SMTP handshake protocols to verify mailbox existence without completing the email delivery, ensuring privacy and compliance.
- How fast is bulk validation?
- Single email validations complete in under 1 second. For bulk lists, we can process up to 10,000 emails in approximately 5 minutes, depending on the responsiveness of recipient mail servers. Some ESPs like Gmail may require slower processing to avoid rate limits.
- Does this work for ESPs like Gmail, Yahoo, and Outlook?
- Yes. Mailbox deliverability validation works for all major ESPs including Gmail, iCloud, Yahoo, Outlook, and others. Some providers may temporarily limit connection attempts, which our system automatically handles by adjusting validation speed.
- How many emails can be verified?
- There is no limit on email list sizes. You can verify millions of email addresses with our email validation service. Enterprise customers regularly validate lists exceeding 1M+ emails.
- Do I need to buy credits?
- Yes. You purchase credits based on your needs. A credit is only used for successfully validated emails—you don't pay for syntax failures. Credits never expire, and we offer volume discounts for larger purchases.
- What payment methods do you accept?
- We accept all major credit cards (Visa, Mastercard, American Express) and PayPal. Enterprise customers can request invoice billing with NET-30 terms.
- Can I get a refund if I'm not satisfied?
- Yes. We offer a 30-day money-back guarantee for first-time purchases. If you're not satisfied with the accuracy or service, contact support for a full refund—no questions asked.
- How does the API integration work?
- Our REST API is developer-friendly with comprehensive documentation. Most integrations take 5-10 minutes to set up. We provide SDKs for popular languages and offer real-time validation endpoints plus bulk processing options.
- Do you offer enterprise plans?
- Yes. Enterprise plans include dedicated infrastructure, custom rate limits, priority support, SLA guarantees, and volume discounts. Contact our sales team for custom pricing based on your validation volume.
- What integrations are available?
- We integrate with HubSpot, Mailchimp, Mailjet, and other major email platforms. You can also use our API, Zapier connection, or CSV upload for maximum flexibility.
