Hello!
As I understand, you want to build new website as an email provider on the example of these sites, but without news feeds etc..
I think my team can help you with this idea
You will need knowledge in such technologies: PHP, UI/UX, HTML in which I can provide you.
We are Ukrainian-Canadian team of highly professional Web developers and System Administrators with 19+ years expertise, specialized in web development, software development, design and 24/7 technical support of servers.
More here: https://www.freelancer.com/u/tangramua?w=f
Contact me for estimation, timelines and other details.
Thanks!