I want to know how can people access their email id which I will create for them for my domain. For eg I created an email id scot@twincitieschiropractic.com now which URL should I share with scot so that he can login their and enter his credential and able to access the mails?

As for your question, I understood that you wanted to give access to email accounts.

To be able to do that, you will have many choices, Here they are:
1- Setup mailbox using Outlook: https://help.greenyhost.com/article/1681
2- Setup mailbox Thunderbird Mail client: https://help.greenyhost.com/article/1677
3- set up email on iPhone: https://help.greenyhost.com/article/1676
4- setup email on my Android device: https://help.greenyhost.com/article/1674

A greenyhost.com user should be able to access their webmail via logging into their account and browsing to the webmail section.
Other than that and browsing to it I’m afraid there is no other way to access webmail. Apologies in this regard.

The only other way I have found of logging in is as outlined from this link: https://webmail.greenyhost.com/