diff --git a/app/__init__.py b/app/__init__.py
index c19ed410..5b71e4d2 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -54,7 +54,7 @@ app.config["LANGUAGES"] = {
 
 app.config.from_pyfile(os.environ["FLASK_CONFIG"])
 
-r = redis.Redis.from_url(app.config["REDIS_URL"])
+redis_client = redis.Redis.from_url(app.config["REDIS_URL"])
 
 github = GitHub(app)
 csrf = CSRFProtect(app)
diff --git a/app/blueprints/metrics/__init__.py b/app/blueprints/metrics/__init__.py
index 4760e5d4..3aee8f37 100644
--- a/app/blueprints/metrics/__init__.py
+++ b/app/blueprints/metrics/__init__.py
@@ -18,6 +18,7 @@ from flask import Blueprint, make_response
 from sqlalchemy.sql.expression import func
 
 from app.models import Package, db, User, UserRank, PackageState
+from app.rediscache import get_key
 
 bp = Blueprint("metrics", __name__)
 
@@ -53,6 +54,7 @@ def generate_metrics(full=False):
 	ret += write_single_stat("contentdb_packages", "Total packages", "gauge", packages)
 	ret += write_single_stat("contentdb_users", "Number of registered users", "gauge", users)
 	ret += write_single_stat("contentdb_downloads", "Total downloads", "gauge", downloads)
+	ret += write_single_stat("contentdb_emails", "Number of emails sent", "counter", int(get_key("emails_sent", "0")))
 
 	if full:
 		scores = Package.query.join(User).with_entities(User.username, Package.name, Package.score) \
diff --git a/app/rediscache.py b/app/rediscache.py
index 869abb04..0dc458cc 100644
--- a/app/rediscache.py
+++ b/app/rediscache.py
@@ -14,16 +14,27 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-from . import r
+from . import redis_client
+
+# This file acts as a facade between the rest of the code and redis,
+# and also means that the rest of the code avoids knowing about `app`
 
-# This file acts as a facade between the releases code and redis,
-# and also means that the releases code avoids knowing about `app`
 
 def make_download_key(ip, package):
 	return "{}/{}/{}".format(ip, package.author.username, package.name)
 
+
 def set_key(key, v):
-	r.set(key, v)
+	redis_client.set(key, v)
+
 
 def has_key(key):
-	return r.exists(key)
+	return redis_client.exists(key)
+
+
+def increment_key(key):
+	redis_client.incrby(key, 1)
+
+
+def get_key(key, default=None):
+	return redis_client.get(key) or default
diff --git a/app/tasks/emails.py b/app/tasks/emails.py
index 85704926..6aed90e7 100644
--- a/app/tasks/emails.py
+++ b/app/tasks/emails.py
@@ -22,6 +22,7 @@ from flask_babel import force_locale, gettext, lazy_gettext, LazyString
 from flask_mail import Message
 from app import mail
 from app.models import Notification, db, EmailSubscription, User
+from app.rediscache import increment_key
 from app.tasks import celery
 from app.utils import abs_url_for, abs_url, random_string
 
@@ -69,6 +70,7 @@ def send_verify_email(email, token, locale):
 
 		msg.html = render_template("emails/verify.html", token=token, sub=sub)
 		mail.send(msg)
+		increment_key("emails_sent")
 
 
 @celery.task()
@@ -88,6 +90,7 @@ def send_unsubscribe_verify(email, locale):
 
 		msg.html = render_template("emails/verify_unsubscribe.html", sub=sub)
 		mail.send(msg)
+		increment_key("emails_sent")
 
 
 @celery.task(rate_limit="25/m")
@@ -107,6 +110,7 @@ def send_email_with_reason(email: str, locale: str, subject: str, text: str, htm
 			conn.send(msg)
 		else:
 			mail.send(msg)
+		increment_key("emails_sent")
 
 
 @celery.task(rate_limit="25/m")
@@ -142,6 +146,7 @@ def send_single_email(notification, locale):
 
 		msg.html = render_template("emails/notification.html", notification=notification, sub=sub)
 		mail.send(msg)
+		increment_key("emails_sent")
 
 
 def send_notification_digest(notifications: [Notification], locale):
@@ -164,6 +169,7 @@ def send_notification_digest(notifications: [Notification], locale):
 
 		msg.html = render_template("emails/notification_digest.html", notifications=notifications, user=user, sub=sub)
 		mail.send(msg)
+		increment_key("emails_sent")
 
 
 @celery.task()