Email is the highest-leverage direct-response channel most agencies underuse. The list is theirs. The reader already said yes once. And unlike ads, unlike social, unlike SEO, an email lands directly in a private space the reader controls. The bar for wasting that privilege is much higher than most copy respects.
Three jobs, in order
- The subject line earns the open.
- The first line earns the read.
- The email earns exactly one click.
Every part of the email is dedicated to the next part’s job. The subject sells the open. The first line sells the read. The body sells the click. Anything that doesn’t move the reader to the next step is padding.
Subject lines that get opened
The subject line is not a headline. It’s a preview of a conversation the reader is deciding whether to have. It works when it feels specific, personal, and low-effort to read.
Shapes that consistently open well
- The specific curiosity: “the one line we cut that doubled reply rate”
- The direct question: “is this still true for you?”
- The plain announcement: “new pricing, effective Monday”
- The named callback: “about what you said on Tuesday”
- The lowercase, one-fragment: “a small change to your account”
Avoid all-caps, exclamation stacks, and clickbait patterns. They tank deliverability, and the reader has learned to skip them.
The preview text is a second subject line
Most email clients show 60–100 characters of preview text after the subject. If you leave that blank, the client fills it with your first line of HTML — often “View in browser.” Write the preview text explicitly. Use it to give the reader a second reason to open.
First lines that keep them reading
The first line of the body has one job: don’t bounce the reader out. Avoid:
- “I hope this email finds you well.”
- “My name is [X] and I’m the founder of…”
- Any restatement of the subject line.
Instead, drop the reader mid-thought:
Last Tuesday you told me the trial team was struggling to book demos in the first week. Here’s the exact thing that fixed it for a client last month.
It reads like the middle of a real conversation, because it is. The reader stays because they want to know what comes next.
Structure: short, specific, one link
The reliable shape:
- A specific opener that references their world.
- One idea, one story, or one useful thing.
- The ask — a single link or reply.
- A signature that sounds like a person.
Cap it at 150 words for most sends. If you need more, you probably needed a landing page, and the email should have linked there.
The one-click discipline
Every email should have exactly one action worth taking. The moment you add a second link, both perform worse. The moment you add a third, the email starts feeling like a newsletter the reader can skim later — and later means never.
If you have three things to say, that’s three emails. Not one email with three CTAs. The list will forgive you for sending more often. It won’t forgive you for wasting the click.
Reply-based CTAs
For cold outreach and high-touch nurtures, replace “book a call” with “reply with a yes and I’ll send times.” A reply is a lower-friction ask than a calendar link, and it starts a real conversation. Once someone replies “yes,” the booking rate climbs by an order of magnitude.
The best email is the one the reader forwards to a colleague. Write for that reader.
A pre-send checklist
- Read the subject line out loud. Does it sound like something a colleague would send you?
- Read the first line. Does it start mid-conversation?
- Delete every sentence that doesn’t serve the click.
- Count the links. If it’s more than one, cut back to one.
- Sign it like a person, not a brand.