邮箱格式校验
校验邮箱地址语法格式
🔒 100% client-side — your data never leaves this pageEmail Input
Validation Result
Validation result will appear here
🔒 100% client-side
About this tool
实时校验邮箱地址格式，支持逐行批量输入。适用于注册表单测试、联系人列表清洗、导入前预检查等场景，帮助你提前发现明显的语法错误邮箱，降低后续处理失败率。工具仅做格式校验，不做投递可达性探测。
Frequently Asked Questions
Does this confirm mailbox existence?
No. It validates syntax format only and does not check whether the mailbox actually exists.
Can I validate a list of emails?
Yes. Paste one address per line to get per-line valid or invalid results.
Why can a valid format still bounce?
Format validity does not guarantee domain MX setup, inbox status, or recipient acceptance rules.