Every now and then I hear from someone who accidentally got a bunch of email addresses indexed as parameters to some script on their site. There’s sometimes an easy solution to that, which will (temporarily!) take care of it fairly quickly: If there’s a common part of the path that identifies these URLs, use a “directory” URL removal request in Search Console (verify ownership first). For example, you can submit “email.php” to have all URLs that start with / use that script temporarily removed.
(Why “temporary?” These removals only stay in place for a limited time; you need to take appropriate action to prevent URLs like that from being indexed in the first place. You might allow crawling and serve a noindex, for example.)
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