=Paper=
{{Paper
|id=Vol-2100/keynote4
|storemode=property
|title=None
|pdfUrl=https://ceur-ws.org/Vol-2100/keynote4.pdf
|volume=Vol-2100
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==None==
<pdf width="1500px">https://ceur-ws.org/Vol-2100/keynote4.pdf</pdf>
<pre>
     Cutting the Cruft from the Toasts

                           Vanessa Murdock

                              Amazon (US)



Abstract. Notifications appear on the lock screen of a mobile phone,
hovering at the top of an open app, as pop-ups (“Toast” notifications)
on a desktop device or gaming console, posing a significant distraction
to users. In our data, the median user receives five notifications per hour
on mobile and desktop devices, which is a distraction every 12 minutes.
At the 75th percentile, users receive 17 notifications per hour - one every
3.5 minutes. While users receive many notifications, they engage with
very few. Toast notifications in our sample have less than a 5% click-
through rate, and the most prolific sources of notifications often have
the lowest engagement. In this paper we present a large-scale analysis of
user engagement with notifications on mobile devices and on the desktop.
Our study includes a large sample of billions of Toast and message center
notifications sampled over a 2 month period, from hundreds of millions of
users. Based on our observations, we show that we can improve the click-
through rate on Toast notifications from 5% to 35% and on notifications
in a message center from 29% to 85%. If we instead rank the notifications
in the message center, we improve the precision at rank one from 29%
to 49%.

</pre>