Hi there,
I am a full time web developer having more than 5 years of experience in web development and modifications, and have expertise in wordpress, html, css, js, php etc.
I have worked on many projects like this and I can modify the code of the file easily and add one more email to activation mail in max 1 days time, please share more details and all stuff and I will start working on it immediately.
Thanks, Prafull