When we first created Subjectlin.es we were keen to show all the data that we had collected from over a million inboxes. But as it turns out that is not the most useful thing for discovering the best subject line to use. Based on your feedback we’ve been busy making the data more relevant. So we have removed a lot of the “noise” so you will no longer see subject lines that were cc’s, forwards or password reset reminders. Which seemed to garner the most feedback from you as being irrelevant.

We’ve also put you in control of what subject lines to show, based on the number of emails that were sent with it. If you are only interested in seeing what the big campaigns are doing you can select the minimum to 1000, need more detail then 100 is your middle option or 10 gives you fine grain control. It’s easy to switch between them using the “Narrow Results” panel.

and turn on Email Updates.