[draft] Adds event email model

app/models/event_emails.py

@@ -0,0 +1,20 @@
+from app.models import Role, db, Mail
+
+class EventMailing:
+    def __init__(self, role, subject, message):
+        self.role = role
+        self.subject = subject
+        self.message = message
+
+    def save_emails(self):
+        role_name = self.role
+        subject = self.subject
+        message = self.message
+        role = Role.query.filter_by(name=role_name).first()
+        recipients = [attendee.email for attendee in role.attendees]
+
+        for recipient in recipients:
+            mail = Mail(recipient=recipient, subject=subject, message=message, action="save")
+            db.session.add(mail)
+
+        db.session.commit()