In the Device and Client tab of the Sent Message report, you can see the Device and Clients used by your contacts when they opened an email.
Every message sent containing HTML contains a tiny tracking pixel that loads on all HTML messages. When a contact opens their email message, this image loads in their browser and Act-On receives data from that request. Act-On gathers this data and then uses several third-party libraries to determine your contact's Device and Client.
Why does my Sent Message Report have Unknown Devices and Default Browser Clients?
Sometimes, Act-On is unable to identify this information and you will see these opens as Unknown Device or a Default Browser Client in your report.
There are several reasons this happens:
- The tracking pixel was not downloaded, but the message has a clickthrough.
- This still counts as an open but the device and client are unknown.
- The Device and/or Client cannot be identified by our libraries.
- This can happen for many reasons, such as brand new devices that are not registered yet in the libraries we use.
- The tracking pixel was loaded by a bot or spam detector that is not an ignored IP.
- To reduce this activity in your reports, see our article here: Identifying False Positives in Email Clicks.
- The tracking pixel was downloaded via an image proxy (most commonly, Google Image Proxy)
- This is currently causing a high number of Unknown Devices in the report. Act-On will be assigning these opens to a new category of "Proxy" in a future enhancement.