Mailerio enables you to verify individual email addresses instantly, either through the Dashboard or via the API for automated, real-time checks.
Verify a Single Email via Dashboard
The single verification tool is perfect for quick checks. To validate a single email you can open Mailerio app and go to Single section. The steps you should follow:
1. Go to Single in the left sidebar.

2. Enter the email address you want to verify and click “Validate”.

3. View the result instantly. Mailerio will show the status (Deliverable, Undeliverable, Risky, etc.) and detailed information like domain, role account, free, disposable, MX record, deliverability confidence, and other metrics.

Tip: Use Single Verification for testing or manual checks before campaigns. This is useful when you need to quickly check a single email.
There’s another way you can validate single emails automatically using API, the next chapter will explain in more detail.
Verify a Single Email via API
For developers or teams who want to integrate email checks directly into signup forms, CRMs, or other systems, Mailerio provides a simple API. We have prepared detailed API documentation for developers with setup settings. Check the API documentation here.
Note: The API returns results in real time, no waiting for batch processing. Each request consumes one verification credit.
Common Use Cases
- Signup validation: prevent fake or disposable emails at registration.
 - CRM enrichment: check the quality of leads before adding them to campaigns.
 - Support tools: quickly verify an email before responding or creating a ticket.