apply_filters( 'is_email', string|false $is_email, string $email, string $context )

Filters whether an email address is valid.

Description Description

This filter is evaluated under several different contexts, such as ’email_too_short’, ’email_no_at’, ‘local_invalid_chars’, ‘domain_period_sequence’, ‘domain_period_limits’, ‘domain_no_periods’, ‘sub_hyphen_limits’, ‘sub_invalid_chars’, or no specific context.

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Parameters Parameters


(string|false) The email address if successfully passed the is_email() checks, false otherwise.


(string) The email address being checked.


(string) Context under which the email was tested.

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Source Source

File: wp-includes/formatting.php

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Changelog Changelog

Version Description
2.8.0 Introduced.

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