Subject lines are the strongest thing in QSR email

Benchmarks tend to lead with what is broken. This one starts with what works, because the quick service and fast casual category is very good at one part of email, and it is the part every subscriber sees first.

In 92 percent of the emails we scored, the subject line and the preview text both did real work. Only 9 of 110 carried a generic or broken subject line.

We tried to join more than 300 quick service and fast casual email, loyalty, and lifecycle programs by hand, using one identity and one inbox, and scored the first email from each brand that wrote back. This post collects the best subject lines and preview pairs we captured, grouped by what makes them work.

The name, merged correctly and used with intent

Putting a first name in a subject line is the most basic personalization there is. The best brands in the study go a step further: the name sits inside a sentence that sounds like a person wrote it.

• LongHorn Steakhouse: “Corrie, you asked for it.”
• Subway: “Corrie, we know you know you know better. You know?”
• Habit Burger & Grill: “A ‘just because’ free Char for you, Corrie”
• Arby’s: “Corrie, this Loaded Rewards offer has your name on it”
• Applebee’s: “Welcome to Club Applebee’s, Corrie!”

LongHorn’s is five words and reads like a reply to something the subscriber said. Subway’s is playful enough to earn a second look. Arby’s makes the personalization the joke: the offer literally has her name on it. None of these would work as well without the name, and none of them leans on it alone.

Subject and preview written as a pair

The preview line is the second sentence of every email, and the strongest brands write it as one. The subject opens a thought and the preview finishes it.

Jeni’s is the boldest line in the study. A premium brand opening with a flat negative statement about its own product is a pattern interrupt, and the two-word preview turns it into a promise. Velvet Taco’s subject means little alone and lands once the preview completes it.

Peet’s and Chipotle show the practical version. The subject makes the offer and the preview adds the one fact the subject left out: the date and what to bring, or the deadline. Neither preview repeats the subject. Each one earns its place.

The offer, stated in the subject

Several brands put the whole value proposition in the subject line, so a subscriber knows what she got before she opens anything.

• Chipotle: “Free chips & guac? Not bad for day one.”
• Gold Star Chili: “Corrie your BOGO Cheese Coney is here!”
• Panda Express: “Corrie, your Welcome Gift is inside!”
• Cheddar’s Scratch Kitchen: “Hey Corrie, your FREE chips & queso are here”

Chipotle’s line is the model. It states the offer, then adds a wry second beat that gives it a voice. It is specific, it is short, and it sounds like the brand.

Voice that carries through the whole inbox

Some brands keep their tone so consistent that you could identify them from the subject line alone.

• Smalls Sliders: “Okay but have you tried the Smauce yet?” with the preview “Your first Combo is one tap away.”
• Chipotle: “48 perfect avocados. Don’t miss out on free chips & guac.”
• Peet’s Coffee: “‘Til we meet again, Burundi Turashobora”

Chipotle’s avocado line is one of our favorites in the study. A specific, slightly strange physical fact about how the guacamole gets made earns attention without a discount doing the work.

The one slot to protect

If there is a weak spot in the category’s subject line craft, it is the preview when nobody writes it. When a brand leaves the preheader empty, most mail clients fill the preview with the first text they find in the email. That is often an image’s alt text or a navigation label, and it can read like a file name.

The fix takes one field. Write a preheader for every send, even a short one, and the inbox will always show what you intended.

A checklist from the best subject lines in the study

• Use the name inside a sentence, not in front of one. “Corrie, you asked for it” beats “Corrie, check this out.”
• Write the subject and preview together. Treat them as two halves of one line.
• Let the preview add a fact. A date, a deadline, a condition, or a reason. Never a repeat.
• State the offer plainly. If the email carries something free, say what it is in the subject.
• Keep the voice. A subject line that could only have come from your brand is doing two jobs at once.
• Fill the preheader every time. An empty field hands your preview line to whatever text comes first.

The takeaway

A lot of benchmark reporting on restaurant email focuses on what the category gets wrong. Subject lines are the exception. The typical QSR brand writes a specific subject and a preview that adds information, and the best of them write lines that sound like no one else. It is a strength worth naming, and a standard the rest of the email can be built up to meet.