Product workflow
Check addresses before they enter your workflow.
Check email addresses before they damage your forms, database or sender reputation. The A2ZLeadZ email verification API helps identify whether an address can receive mail and flags disposable email services in real time.
Use the browser tool for individual or bulk checks, or connect the API to a signup form and validate addresses as they are entered. Export results to CSV or Excel for a clean handoff to marketing and sales workflows.
Stop bad addresses before they enter your workflow
Invalid and disposable addresses create bounces, distort conversion data and waste follow-up effort. Verification adds a quality gate before data reaches your CRM or campaign. No verifier can guarantee engagement, so combine technical validation with consent and relevance checks. Use the step-by-step email verification guide to define result handling and suppression rules.
Check whether an email exists
Screen addresses before importing them into outreach, newsletters or customer systems.
Detect disposable addresses
Flag temporary inbox services that can undermine account quality and trial-abuse controls.
Verify in real time by API
Add validation to registration, lead-capture or checkout workflows and return a result before submission.
How the email verification API workflow works
- Send the address through the browser tool, bulk workflow or API.
- Separate valid, invalid, disposable and uncertain results according to your risk rules.
- Export the clean list or pass accepted addresses to your CRM and campaigns.
Practical use cases
- Protect SaaS registrations from disposable accounts.
- Clean a prospect list before a cold-email campaign, then use the cold email deliverability guide to review the wider sending setup.
- Validate newsletter imports before sending.
- Add email quality checks to client forms through an API.
Connect it to the rest of your lead-generation workflow
A2ZLeadZ brings research, verification, enrichment, outreach and website conversion tools into one account. Use Email Finder and Email Sequences before or after this step to keep your data moving without another disconnected subscription.
See the Trial and $99 Pro plan comparison for current platform limits.
Comparing specialist email tools? Our A2ZLeadZ vs Hunter guide covers email finding, verification, sequences, current pricing and broader workflow differences.
Email Verification API FAQs
What does the API check?
It checks whether an address appears able to receive email and identifies disposable email services.
Can I verify a CSV list?
Yes. Results can be processed in bulk and exported to CSV or Excel.
Will verification guarantee delivery?
No verifier can guarantee inbox placement or a reply. It reduces obvious address risk; sender reputation, authentication, consent and message quality still matter.
How many requests are included?
The Trial plan currently includes 1,000 requests. Pro provides unlimited requests under the current platform plan.
Try Email Verification API inside A2ZLeadZ
Start with the free Trial. No credit card is required, and you can upgrade when your workflow needs more volume.