Why does subscription renewal email show the internal SS site address and not the actual domain name?

I know this probably doesn't belong here and may be a silly question but I didn't know where else to post this question...

I received an email from SS for a subscription renewal notice for one of my clients and I noticed that the website in the email is the funky SS address and not the actual domain for this site. (see attached).  Is this the way SS sends these emails? It would be much easier if I could see the actual site domain in the body of the email rather than on having to click on it to find out which site it's referencing. 

26 minutes ago, patriceacer said:

I received an email from SS for a subscription renewal notice for one of my clients and I noticed that the website in the email is the funky SS address and not the actual domain for this site. It would be much easier if I could see the actual site domain in the body of the email rather than on having to click on it to find out which site it's referencing

Although every Squarespace site has a default built-in domain that uses two randomly generated words and a random string of characters, you can change this built-in domain at any time, to make it easier to identify.

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Ah ok, I'll have to look into doing that. I thought the internal domain would change automatically when the real domain was added. Thank you!