Domain name with 50 users for G Suite legacy free

Description

Google Apps (G Suite)
is a suite of cloud computing productivity and collaboration software tools and software offered on a subscription basis by
Google
. It includes
Google's
popular web
applications
including Gmail,
Google
Drive,
Google
Hangouts,
Google
Calendar, and
Google
Docs.
For instance, if you own the domain
example.com
and you sign up for Google Apps
(G Suite)
services, everyone at your organization will get :
A custom email address
Google Drive access
Tools for word processing
Spreadsheets and presentations
A shared calendaring system
Tools for creating web pages and sites for your business
And much, much more!
What you will get :
G Suite
Standard Edition account with 50 user licenses (15GB storage per user)
G Suite
Administrator username and password (and you are the only one accessing the admin console)
Your domain will add into
G Suite
account (use it for life, there is no renewal fee)
Your domain will be set as
alias domain
into google apps account.
Provide management account for the original domain.
Notes :
You can send and receive emails with your domain name, but you need to login to the root domain.
You can use Outlook as usual
You will own the original domain name (the root domain of your account)
Important note:
Orders that are delivered the super admin account and the root domain name will not be refunded in any form.
....................................
UPDATE 2020
Google has updated since January 2020, they do not allow adding secondary domain names or changing primary domain names https://support.google.com/a/answer/60217
Using aliases is the only solution for free g suite accounts, I have described in detail the product service.
With alias you can send and receive emails with your domain name
You can refer to the instructions below
To receive and send email with your domain name https://www.youtube.com/watch?v=-9gsgtuZtJ8 (You need to login to the root domain to send and receive email with your domain name.)