enable mailgun and analytics (#1370)

* use anymail to send email via mailgun

* adding notification email setting

main/settings.py

@@ -395,6 +395,9 @@
     "MAILGUN_SENDER_DOMAIN": MAILGUN_SENDER_DOMAIN,
 }
 
+NOTIFICATION_EMAIL_BACKEND = get_string(
+    "MITOPEN_NOTIFICATION_EMAIL_BACKEND", "anymail.backends.test.EmailBackend"
+)
 # e-mail configurable admins
 ADMIN_EMAIL = get_string("MITOPEN_ADMIN_EMAIL", "")
 ADMINS = (("Admins", ADMIN_EMAIL),) if ADMIN_EMAIL != "" else ()

profiles/utils.py

@@ -9,10 +9,11 @@
 from xml.sax.saxutils import escape as xml_escape
 
 import requests
+from anymail.message import AnymailMessage
 from bs4 import BeautifulSoup
 from django.conf import settings
+from django.core import mail
 from django.core.files.temp import NamedTemporaryFile
-from django.core.mail import EmailMultiAlternatives
 from django.template.loader import render_to_string
 from PIL import Image
 
@@ -414,9 +415,14 @@ def send_email(recipients, subject, content, text_only):
         for link in soup.find_all("a"):
             link.replace_with(link.attrs["href"])
         text_content = soup.get_text().strip()
-    msg = EmailMultiAlternatives(
-        subject, text_content, settings.DEFAULT_FROM_EMAIL, recipients
-    )
-    if not text_only:
-        msg.attach_alternative(content, "text/html")
+    with mail.get_connection(settings.NOTIFICATION_EMAIL_BACKEND) as connection:
+        msg = AnymailMessage(
+            subject=subject,
+            body=text_content,
+            to=recipients,
+            from_email=settings.MAILGUN_FROM_EMAIL,
+            connection=connection,
+        )
+        if not text_only:
+            msg.attach_alternative(content, "text/html")
     return msg.send()