Lindsay Kolowich says, “The goal of the subject line is to get someone to check out the rest of your email. So you’ll want to intrigue and generate interest without saying too much. And you definitely don’t want to go with something that clearly says “Trying to sell you something. Click here to learn more.” (Obviously.)
When it comes to generating interest, humans react strongly to five things:

Social proof: Do you seem like a credible person?

Unanswered questions: Is the answer coming soon?

Disrupted patterns: This is different than the other stuff I normally see!

Self-interest: What’s in it for your prospect?

Requests for help: This might seem like it contradicts self-interest, but many people do want to help when possible.

Keeping that in mind, you’ll want to craft subject lines that touch on at least one of these areas”.

13 Intriguing Email Subject Lines That Prospects Won’t Be Able to Resist Opening

HubSpot

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