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1. Emails with numbers and lists

It works for clickbait articles, and it works for emails. People love lists and they love numbers — as long as those numbers are relatively low and easy to wrap your head around. You’ve probably seen email subject lines such as:

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All of these email subjects are real — and they each communicate something tangible and specific. That’s why numbers are so successful — you know exactly what you’re going to get when you open this email.

Emails with numbers and lists promise a certain amount of useful information, and as such, they can stand out from the rest of the emails in a user’s inbox. The tactic is so successful that some brands will even go so far as to make the number and the list part of the name of the email instead of the subject.

For example, “Moz Top 10” sends out a weekly newsletter, but “Moz Top 10” is the name of the sender, not the subject line. This is a variation that might also work for your brand or business, depending on the nature of your email newsletter.

Moz top 10 email subject line

Use this strategy when: You have a lot of information to get across. Lists are a great way to organize that information into a chunk that’s easy to digest.

2. Subject lines designed to shock

As with anything in life, you can get a little attention if you’re willing to say anything. That holds true with email subject lines as well.

If you use a controversial or shocking email subject, it’s likely you’ll increase your open rate. But there are significant risks to this strategy, especially in these politically polarized times. It’s important to weigh the risks carefully before proceeding with this strategy.

Use this strategy when: You want to shake things up and you have email content that is actually shocking. If your shocking subject line doesn’t match the email content and subscribes feel like they’ve been tricked, your unsubscribe rate could go up.

3. Humorous subject lines

Humor is a wonderfully persuasive tool in nearly any setting, but it’s especially true with email subject lines. If you can get your reader to laugh, you’ll probably get your reader to open your email.

Some examples of humorous subject lines include:

It’s time for sportsball! (Shirt Woot).

You are one with the Star Wars sale, and the Star Wars sale is one with you (Think Geek).

Spocking stuffers (Star Trek shop).

Think Geek email subject line

Humor, of course, needs to be used appropriately, so it should never be crass or at anyone’s expense. But it’s a great way of making your brand a