wpsnoop Function isvalidemail() conflicts found in 3 plugins

A php function called isvalidemail() is used in 3 wordpress plugins/themes and could produce a potential conflict if the wrong combination of themes and plugins is used on your site.

To prevent this from happening developers are encouraged to use namespaces and scopes that isolate their functions from colliding with other functions but this is not always done correctly.

We hope this reference helps you to find PHP Fatal error: Cannot redeclare isvalidemail()

The following 3 plugins register a function called isvalidemail():

Plugin
Ivaldi MailChimp Beamer
IFS Seo Simple
IFS Simple Mass Mailer