We've all been tempted to over-explain in subject lines. You want to entice people to open your email so you pack in all the information you can in that tiny space.
The truth of the matter is most people don't open emails with long subject lines.
In fact, if you're able to keep your subject line brief, you can easily increase your open rate. After all, 64 percent of people say they open emails based on the subject line alone.
Studies show that subject lines less than 60 characters long are the most likely to be opened, but subject lines with around 70 characters had the highest click to open rate. So, if you're able to make your subject line engaging in fewer characters, you will boost how many recipients open your emails!
Another reason to keep your email subject lines short is the increasing use of mobile devices. 40 percent of emails are opened on mobile devices. Since these screens are small, most will only show four to seven words of your subject line before having to cut it off. This means your recipients are losing the context of your email subject line and are less likely to open it.
By keeping your email subject lines short, not only do you keep the message concise and boost your open rate on computers, you also ensure that mobile email users will be able to view the entirety of your subject line.
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