Verify the regular expression of the Mailbox

To verify the regular expression of a mailbox, see.
I understand the mailbox rules X@X.X

/^ [\ W-] + @ [\ w-] + \. [\ w-] + $/(does this work ?)

Do you need to consider some privileged mailboxes?

The VIP mailbox domain name has been launched in QQ mail, and members can register and use VIP mailboxes exclusively! The domain names @ vip.qq.com and @ qq.com registered with the same QQ number point to the same email address. the same email address, the same email address, and only your distinguished identity and privilege are displayed.

What are the mailbox rules if a privileged mailbox subverts my previous mailbox rules?

Reply to discussion (solution)

/^ [\ W \-\.] + @ [\ w \-\.] + (\. \ w +) + $/

What are mailbox rules?

At least 6 bits, up to 32 bits, @ can be followed by multiple ., for example, you mentioned @ vip.qq.com. this is generally the mailbox rule, and other special and existing mailboxes are modified accordingly (should be few)

HTML5 can be used for direct verification.

HTML5 can be used for direct verification.

Don't you understand?