Groups on our premium plan are able see who has received a group email and, when supported, who has opened the email.
Sending tracked emails embeds an invisible pixel into your emails that allows us to record information when the email is viewed. For every email you send and for each recipient you send to, you can see if your emails are getting read, in what environments, and more.
Limitations
HTML only
We can only add a tracking pixel to HTML emails. If you send plain text only emails or if a user only reads the plain text version, we can’t track opens for those emails.
Blocked images
If a user views emails in a client that blocks images from loading, we can’t track opens for those emails.
Ad Blockers
Ad Blockers may interfere with tracking opens, if the users setup has blocked the tracking pixel URL.
Gmail
Using the Gmail website and mobile applications will display images served through a proxy server. This means that we will be able to detect when an open occurs for Gmail users. However, we won’t be able to detect geography, operating system, and some other information.
Apple Mail
Starting in iOS 15, Apple allows iOS users using Apple Mail to turn on a setting called Mail Privacy Protection that can cause false-positive opens to be reported.
