Hi ,
if current functionality is working fine and we have to create only hooks for saving database and sending mail then it may take around 3 days depending upon vTiger API ..
Recently I have worked on vTiger API(s) related task & I do understand your requirement also .
I have solid working knowledge in WordPress, vTiger API , PHP, MySQL, HTML, CSS, JQuery, JavaScript , theme development, customization of plugins.
I am very much interested to work in your project. I am API , PHP programmer with more than 4 years working So, I think you’ll find, I have the skills you’re looking for.
I am able to start your project as soon as possible according to you. Please ping me for more discussion about your task .
Thanks & Best Regards ,
Richestuser