I received this email, which looked fishy - it is confirmed as a scam.
Dear Taxpaye
Kindly sign in securely here using your email address & password and option to receive our incoming document/ billing statement via your personal email rather than through the mail.
Please note that we no longer send document / statement through regular mail. You have 24 hours to complete these steps to avoid our service suspension.
Moultonboro confirmed it was a scam here:
https://www.moultonboroughnh.gov/hom...am-email-alert
Stay safe!