Bloomerang Volunteer tag syncs with email interests in Bloomerang Donor

We created a tag in Bloomerang Volunteer for when people say they do not want to receive emails from us. However, this does not sync to Bloomerang Donor. So if we have people in a group in BD and that group is synced to MailChimp to send an email, MailChimp has no way of knowing who does not want to receive emails. If the tag could sync the mail preferences, that would be great. Alternatively, MailChimp could integrate with Bloomerang Volunteer!