Editable Text to End-Users

Thank you for developing this Plug-in. My only issue is with the initial text message sent to the end-user. Specifically, “Your enquiry have been submitted…”

Would it be possible to give the administrator flexibility to edit the text for grammar and consistency of language?? In my case, “Inquiry” is the preferred American English spelling.? Also, at least for the American variant, the verb does not agree with the subject. Given the option, I would revise it to read, “Your inquiry has been submitted.” Thank you!