What makes an email address valid?

A valid email address has three parts: a local part (before the @), the @ symbol, and a domain (after the @). The local part can contain letters, numbers, and certain special characters. The domain must include at least one dot and a valid TLD (top-level domain) like .com, .org, or .net.

Does this tool verify if the email actually exists?

No, this tool validates the email format only — it checks that the address follows the correct structure according to RFC 5322 standards. To verify if an inbox exists, you would need to send a test email or use an email verification service that checks MX records.

Why does the tool suggest a corrected email address?

The tool recognizes common typos in popular email domains like gmail.com, yahoo.com, and hotmail.com. If your domain looks like a misspelling of a common provider, it will suggest the likely intended domain.

Is this email validator free to use?

Yes, completely free with no limits. All validation happens in your browser — no email addresses are sent to any server, keeping your data private.

What is the @ symbol's role in an email address?

The @ symbol separates the local part (your username) from the domain. Every valid email address must have exactly one @ symbol. The local part precedes it and the domain name follows it.

邮箱地址验证工具

即时验证电子邮件地址。检查格式、检测常见域名拼写错误，并提供本地部分、域名和TLD的详细分析。

电子邮件地址

输入电子邮件地址以验证其格式并获取详细诊断信息。

使用方法

即时验证电子邮件地址。检查格式、检测常见域名拼写错误，并提供本地部分、域名和TLD的详细分析。

1Type or paste an email address into the input field.
2The validator checks the format in real-time as you type.
3Review the breakdown showing local part, domain, and TLD.
4Check for any issues listed below the status badge.
5If a typo is detected, click the suggestion to auto-correct.

主要功能

Real-time format validation as you type
Detailed breakdown of local part, domain, and TLD
Typo detection for popular domains (Gmail, Yahoo, Hotmail)
RFC 5322 compliant validation rules
100% client-side — email addresses are never sent to a server

常见问题

了解更多

Email Validation Guide: How to Check Email Addresses Online