Unable to redirect to `mailto:`

Developers Workers
1

I’m trying to create a contact middleman injecting a localized subject to an email.

const uri = `mailto:${handle}?subject=${text}`
return Response.redirect(uri, 302)

When running locally it works as intended but after publishing the script to CF I get exceptions when calling the script.

{
"exceptions": [
    {
      "name": "TypeError",
      "message": "Unable to parse URL: mailto:[email protected]?subject=subject text",
      "timestamp": 1669423847079
    }
  ]
}

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