Send an email when campaign is refunded.

r2/r2/lib/emailer.py

@@ -268,6 +268,10 @@ def finished_promo(thing):
     return _promo_email(thing, Email.Kind.FINISHED_PROMO)
 
 
+def refunded_promo(thing):
+    return _promo_email(thing, Email.Kind.REFUNDED_CAMPAIGN)
+
+
 def send_html_email(to_addr, from_addr, subject, html, subtype="html"):
     from r2.lib.filters import _force_utf8
     msg = MIMEText(_force_utf8(html), subtype)

r2/r2/lib/promote.py

@@ -838,6 +838,7 @@ def refund_campaign(link, camp, billable_amount):
     camp.refund_amount = refund_amount
     camp._commit()
     unset_underdelivered_campaigns(camp)
+    emailer.refunded_promo(link)
 
 
 PromoTuple = namedtuple('PromoTuple', ['link', 'weight', 'campaign'])

r2/r2/models/mail_queue.py

@@ -303,6 +303,7 @@ class Email(object):
                 "GOLDMAIL",
                 "PASSWORD_CHANGE",
                 "EMAIL_CHANGE",
+                "REFUNDED_PROMO",
                 )
 
     subjects = {
@@ -324,6 +325,7 @@ class Email(object):
         Kind.GOLDMAIL : _("[reddit] reddit gold activation link"),
         Kind.PASSWORD_CHANGE : _("[reddit] your password has been changed"),
         Kind.EMAIL_CHANGE : _("[reddit] your email address has been changed"),
+        Kind.REFUNDED_PROMO: _("[reddit] your campaign didn't get enough impressions")
         }
 
     def __init__(self, user, thing, email, from_name, date, ip, banned_ip,

r2/r2/templates/promo_email.email

@@ -108,6 +108,13 @@ Thank you again for advertising on reddit, we hope you'll come back and do busin
   http://www.reddit.com/r/selfserve
 
 We're hoping to create a place for you to exchange tips and tricks for getting the most out of your sponsored links, as well as to provide support for new users.
+%elif thing.kind == Email.Kind.REFUNDED_PROMO:
+We're sorry, but we weren't able to deliver as many impressions as you paid for.
+
+  ${edit_url}
+
+We're working to improve the systems to predict our pageview inventory so this doesn't happen again. You have been refunded the unspent portion of your budget. If you have any questions or concerns please reply to this email.
+
 %endif
 
 Thank you,