The CastelMtl Newsletter Posted on March 16, 2023 by castelmtl SUBSCRIBE TO NEWSLETTER Starting in June, the Associazione Maria SS. di Costantinopoli di Castelgrande in Montreal will be sending out quarterly newsletters by email to keep members and friends up to date on news and events.By entering your email and clicking SUBSCRIBE, you agree to share your email address with the Associazione and Mailchimp to receive marketing, updates, and other emails from the Associazione. Use the unsubscribe link in those emails to opt out at any time. Processing… Success! You're on the list. Whoops! There was an error and we couldn't process your subscription. Please reload the page and try again.