Email Validator
FreeValidate email address format and domain existence
About Email Validator
Bad email addresses inflate bounce rates, hurt sender reputation, and waste effort on records that will never deliver. The Email Validator from ToolHub by Codaiman checks an address for correct format and confirms that its domain actually exists, helping you separate usable contacts from typos and dead addresses.
Enter an address and the tool verifies the syntax follows email standards, then looks at the domain to confirm it is real and able to receive mail. It is a fast way to vet a signup, clean a small list, or debug why a message never arrived, without integrating a verification API into your project. It works in the browser with no signup and returns results right away, so you can check addresses quickly and free whenever you need to.
Common uses
- Verifying a user-submitted email at signup to reduce fake or mistyped accounts
- Spot-checking addresses from a contact list before a send to cut bounce rates
- Debugging why a transactional email never reached a recipient
- Catching common typos in domains such as gmial or hotmal before they cost a delivery
- Confirming a domain can receive mail when troubleshooting an integration
How to use
- 1
Configure options
Set your preferences using the options panel below.
- 2
Click Generate
Click the process button to generate your result instantly.
- 3
Copy or download
Copy the result to clipboard or download it directly to your device.
Why ToolHub?
- Instant error detection
- Detailed error messages
- Standards compliant
FAQ
Does it confirm the inbox actually exists?
It validates the address format and checks that the domain exists and is configured to receive mail. It does not guarantee a specific mailbox is active.
Does it detect typos in the domain?
Because it checks whether the domain resolves, misspelled or nonexistent domains are flagged as problems.
Can I validate a whole list at once?
The tool is built for checking addresses one at a time. For bulk verification, a dedicated batch service is more suitable.
Will it send an email to test?
No. It checks format and domain records without sending any message, so it is non-intrusive.
Can I use Email Validator on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.