Automatic encryption to several recipients

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Hi there,

for automatic encryption to several always repeating recipients,
especially to own keys, you use the --encrypt-to option. I´d like to use
it in gpg.conf.

I wonder, can it be used to encrypt to more than one key? What would be
the correct syntax?

Something like
encrypt-to KEY1
encrypt-to KEY2
encrypt-to KEY3

or "encrypt-to KEY1 KEY2 KEY3"

Thanks in advance!