Open rate tracking lets you see if your subscribers have opened your emails from their inbox. Open rate is mostly influenced by the attractiveness of your subject line.
How to track your open rate?
After enabling the tracker and sending a mail merge, you will notice in your spreadsheet that the status will change from 'EMAIL_SENT' to 'EMAIL_OPENED' for each email opened (under the 'Merge status' column).
A note in the merge status cell will also indicate when the email has been opened:
If you closed your spreadsheet, you can open the tracking report again by going to Add-ons > Yet Another Mail Merge > Open tracking report:
See many times an email has been opened
If you want more insights, you can select the appropriate row and you will see how many times a specific email has been opened, and the first/last time it has been opened.
The open rate provides you a useful information regarding the attractiveness of your email from the subject line. Therefore, if you notice that it is low, don't hesitate to test different subject lines to increase your open rate.
How does YAMM track an opened email?
YAMM embeds a tiny, invisible tracking image (a single-pixel gif, sometimes called a web beacon) within the content of each message.
When the recipient opens the message, the tracking image is scanned, referenced and recorded in our system.