Welcome to the Linguistic Semantics Google Group!
You can use this group like a mailing list by clicking the "My Settings" menu in the top right
of the page (the little person with a gear) and selecting "Membership and email settings".
Select your preferred email address by clicking on the email address that's displayed where
it says "Use ... for this group with the following settings". If it only shows a gmail address,
you might need to add another email address to your Google account. You can do this by
clicking the blue circled person in the top right, clicking "Account", and then "Edit" under
"Email & phone", where it will let you edit your other email addresses.