How to set up a group email using 100+ names from a cc list

How to set up a group email using 100+ names from a cc list

I want to set up a group email by cutting and pasting about 110 email addresses, which are from the cc list of an email I have already sent. Most of these names are not in my contacts app, and I don’t want to set up a separate contact for all of them. I just want to be able to access this group cc list so that if I want to send an email to all of them again I don’t have to track down the email I sent today to cut and paste the cc list