During the first run of
letsencrypt-auto, an account was created with the email I specified in my ini file. Now that I see the account ID in
/etc/letsencrypt/accounts, is it reasonable to include the ID in my ini file for future runs? What will letsencrypt do when I do not include the ID? Does it lookup the account automatically from
/etc/letsencrypt or will it create a new account such that I have two accounts in the
acounts/ directory afterwards?
An additional question: What happens when I want to use the same account ID together with another (yet unregistered) email address (e.g. when applying for a cert for another domain)?