Why you can’t ignore your email previews anymore

Published about 1 year ago • 1 min read

When email previews first appeared in Gmail and Yahoo inboxes, most marketers ignored them.

That gray line under the subject line? Just filler, right?

Not anymore.

Here’s What’s Really Happening

Email Service Providers (ESPs) - like Kit, Mailchimp, and Active Campaign - will automatically grab the first line of your email if you don’t write a preview yourself. That’s why inboxes are full of:
- “View this email in your browser”
- “Unsubscribe here”
- Or a broken merge tag: “Hi [FNAME].”
Email Clients (like Apple Mail) - are now experimenting with AI-generated summaries. In the future, your subscriber may see an AI-written preview instead of the one you intended.

Either way - if you don’t take control, someone else will.

Why It Matters

Your subject line isn’t working alone.

The preview is your second hook.

Together, they shape the open.

Here’s what I mean:

✅ Example 1: Curiosity + Clarity

Subject: “Your open rates aren’t dropping by accident”
Preview: “The hidden line in the inbox that’s costing you clicks.”

✅ Example 2: Value + Specificity

Subject: “How to fix broken email deliverability”
Preview: “Start with SPF, DKIM… and the preview text you’ve been ignoring.”

✅ Example 3: Urgency + Tease

Subject: “You have 3 seconds to earn the open”
Preview: “And your preview line may matter more than your subject.”

Notice how none of these just repeat the subject line.

Each one adds context, curiosity, or urgency.

Now compare that to what happens when you don’t set your preview:

❌ Subject: “Special offer inside just for you”
❌ Preview: “View this email in your browser.”

That’s a wasted opportunity.

Action Step

Before you hit send, draft your preview line.

Keep it short (60–90 characters), curiosity-driven, and paired with your subject.

Because if you don’t write your email preview, your ESP - or AI - will.

Strategically yours,
Karen

P.S. Seen a terrible email preview lately? Hit reply and share with me - I’m collecting examples.

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