Most cable/internet service providers offer an array of services besides cable TV and internet access, they also include things like email accounts. It is delightful to have one bill per month that covers this many services but the email piece could present problems for you in the future. If you get email accounts in your package, I recommend not using the email addresses they give you for any important accounts you hold with companies (ex banks). Based on my own experience of moving to other cities, getting married, having the cable/internet account in my spouses name and my provider being bought out, keeping the email accounts active and unchanging has proved to be a stressful task long term.
Something as minor as the provider installing a new modem in your home can inadvertently disable all email accounts (yes, this happened to me). This simple activity should have taken no more than thirty minutes but it ended up taking an entire day to resolve and my husband was the only person tech support would speak with because his name was the only name on the account (and this is the way it should be for security purposes). This event left me with the possibility of having to do a tremendous amount of paperwork with several companies (banks, web hosting companies, etc) that rely on my email address as part of how they identify me. With my email suddenly gone, these companies would no longer be able to verify me via this very important method of authentication. I was lucky, by that evening my email accounts were re-enabled but this was the final event that caused me to break my dependence upon the email address that comes with our cable/internet provider package.
So what options do you have when it comes to email? There are many free options available like Yahoo, Gmail, etc but understand that free means they are using the accounts to make money in some way so if you are concerned with privacy and stability then you will want to actually pay for email accounts. Several good ones are listed here (you will want to opt for the pay version): https://www.lifewire.com/best-secure-email-services-4136763 or if you are paying for your own domain hosting account already then use the emails associated with your domain hosting account.