Frequently Asked Questions
Everything you need to know about Heybounce's email verification platform.
What is Heybounce?
Heybounce is a fast, accurate, and secure email verification platform that helps businesses reduce bounce rates, protect sender reputation, and maximise email-marketing ROI.
How does the email verification process work?
We run each address through multiple real-time checks—including syntax, domain, MX records, temporary inbox detection, SMTP ping, and proprietary heuristics—to determine if the mailbox can accept mail.
How accurate are your results?
Our multi-layer verification engine delivers industry-leading accuracy. Valid emails are deliverable 99%+ of the time when sent immediately after verification.
Is my data secure?
Absolutely. All data is encrypted in transit (TLS 1.3) and at rest. We never store full email lists longer than necessary and adhere to GDPR & CCPA requirements.
Do you offer free credits?
Yes. Every new account receives 100 free credits so you can test single or bulk verification without entering a credit card.
What is the difference between single and bulk verification?
Single verification checks one email instantly via API or dashboard. Bulk verification processes a file with thousands or millions of addresses asynchronously and notifies you when finished.
How long does bulk list verification take?
Processing speed depends on list size and email provider throttling, but most lists complete at ~100k emails per hour. You will receive an email notification once the job is done.
Which programming languages can integrate with the API?
Any language capable of making HTTPS requests can use our REST API. We also provide ready-made examples for Python, JavaScript/TypeScript, PHP, and cURL.
Do unused credits expire?
Purchased credits never expire as long as your account remains active.
How can I contact support?
Reach us anytime at [email protected] or via the in-dashboard chat widget. We aim to reply within one business day.
Start Verifying Emails in Minutes
Make sure that your messages land in the right inbox. Start verifying emails today and improve your sender reputation.