How much do personalized subject lines increase email open rates?

Personalized subject lines increase email open rates by at least 50%. There are many ways to personalize a subject line, but here are some of the most effective:

• First names. Emails that include the recipient's first name have a 41% click-through rate and a 29% open rate.

• Interests. If you know something about the recipient's interests, that can be a good thing to include in the subject line. For example, if you're a pet company, it can be more effective to mention cats to customers who are known to have them and vice versa for dog owners.

• Birthdays and anniversaries. If you know a recipient's birthday or anniversary, those dates can be a great opportunity to offer deals or entice a purchase.

• Transaction history. Translation history is valuable for piquing a customer's interest in new items. If you know that a recipient was recently looking at coffee tables, you can include that specific item in the subject line of your email.

• Urgency. This includes things like abandoned cart emails and other calls to action. For example, saying an offer is about to expire is more likely to get a recipient to engage.

• Location. If you know a recipient's location, that can be a great opportunity to include regional language. For example: "30% off everything on the East Coast!".