ManpreetDev Mail Designer for Contact Form 7 is a template layer for Contact Form 7. Contact Form 7 keeps doing what it does best — rendering, validating and submitting forms, and sending the mail. This plugin manages what those emails look like, and keeps a record of what people sent.
Your Contact Form 7 settings are never overwritten. Templates are applied at runtime, so your form’s own Mail configuration stays exactly as you left it and takes over again the moment you detach a template.