Email is part of life.
There are numerous apps or programs to view email and depending on your mobile phone, ipad, tablet or desk top computer, some are better than others.
Some people have a different email address for work or home. I recommend using more than one address. These days one is required to register online for purchases or some reason. If you have an address for infrequent use, it can make it easier to manage spam or private communications. I use Yahoo and Gmail free addresses.
When you set up a new internet provider, they usually give you a free email address with your account. This is probably necessary for account info and advising of downtime etc, but it is NOT necessary to tell everybody that is your NEW email address. If you set up with Telstra and change to Optus later the email address will change as well. This why it is a good idea to use a free account like Gmail or Yahoo and you can be consistent with the same email address regardless of who supplies your internet. It does not matter if you have multiple email addresses but for your friends and family you can simply use one email address.
What program is best to view the email?
I have used MS Outlook at home on a computer and work and found it is quite powerful and practical. I don't like MS license subscription style of expense, so I looked for the free programs.
There are numerous email programs (apps) but currently I am very happy with Bluemail. It manages multiple email addresses easily with a unified inbox, so you don't miss anything. Some phones have built in email programs like Apple or Samsung, and they work quite well. Bluemail does work on most devices. Ask for help if you want to set up email on your device.