AI Subject Lines & Preview Text

AI Subject Line Generator for Email Campaigns

Tell Adflipr what your email is about. AI writes subject lines and matching preview text, sized for the inbox, so more people open your campaign.
Campaigns › Black Friday Sale › Subject & preview
What is this email about?
Black Friday sale, 25% off everything with code BLACKFRIDAY25, ends Sunday. Bold, urgent tone.
Seasonal · 42 chars
Your Black Friday gift: 25% off everything
Use code BLACKFRIDAY25 before Sunday midnight.
Urgent · 41 chars
Your cart is waiting, 25% off ends Sunday
Bestsellers are going fast this Black Friday.
Personal · 40 chars
Emma, your Black Friday discount is here
25% off sitewide with code BLACKFRIDAY25.
Curious · 41 chars
What 25% off looks like this Black Friday
Open to see our most loved picks.
Fits on mobile
No cut-off subject line
Ready to test
Pick 2 options for an A/B test
1

Open your email campaign

Click the AI button next to the subject line field.
2

Describe the email

Offer, audience and tone in one line, or let AI read your email.
3

Pick, test and send

Choose a subject and preview text pair, edit it, or A/B test two.
The problem

Why good emails still do not get opened

In the inbox, people only see your sender name, subject line and preview text. If those three lines do not give a reason to click, the email inside never gets a chance.
INBOX
Your Brand
Our biggest Black Friday sale of the year is finally…
01

Cut off on mobile

Long subject lines get trimmed on phones, so the offer never shows.
Your Brand
Black Friday Sale is live
View this email in your browser
02

Preview text left empty

Without it, the inbox shows the first line of your email, often a browser link.
Brand A · Big Sale Now On
Brand B · Huge Sale Now On
Your Brand · Sale Now On
Brand C · Mega Sale On Now
03

Sounds like everyone else

In sale season, every brand sends “Sale now on”. Yours blends in.
SPAM FOLDER
FREE!!! 100% GUARANTEED DEAL, ACT NOW!!!
04

Spammy wording

All caps, too many exclamation marks and pushy words can hurt where your email lands.
What AI does for you

Better subject lines and preview text in a few seconds

Subject lines

Get 5 subject line ideas from one short description

Describe your email in a line, or let AI read the campaign you already built. You get several subject lines, each written in a different style, so you can pick the one that fits.
Your Black Friday gift: 25% off everything
Benefit
25% off ends Sunday midnight
Urgency
What 25% off looks like this Black Friday
Curiosity
Emma, your Black Friday discount is here
Personal
Our biggest sale of the year starts now
Announcement
Preview text

Preview text that finishes the thought

Every subject line comes with matching preview text. It adds new information, like the code or the deadline, instead of repeating the subject.
BEFORE
YB
Your Brand
Black Friday Sale
View this email in your browser | Unsubscribe
AFTER, WITH ADFLIPR AI
YB
Your Brand
Your Black Friday gift: 25% off everything
Use code BLACKFRIDAY25 before Sunday midnight. Bestsellers are going fast.
Inbox ready

Sized to show in full on phones and desktop

Each suggestion shows its character count. AI keeps the important words at the start, so the offer is still visible if a phone trims the end.
Inbox
Your Brand
Your Black Friday gift: 25% off everything
Use code BLACKFRIDAY25 before Sunday midnight.
Another Store
Do not miss our amazing biggest sale of the season…
View in browser
SUBJECT
42 chars
PREVIEW TEXT
47 chars
Offer is in the first 6 words
Tone & personalisation

Match your brand voice and add the customer’s name

Pick a tone, ask for a version with first name, or switch the language. Then choose two favourites to test against each other.
Seasonal
Premium
Playful
Urgent
Spanish
A
Emma, your Black Friday gift is inside
25% off everything until Sunday.
B
25% off everything ends Sunday
Code BLACKFRIDAY25. Bestsellers going fast.
Split your list and send the winner to everyone else.
Guide

What makes a subject line and preview text work together

Think of them as one message split in two. The subject line earns attention. The preview text gives the reason to open now.
Your Brand
Emma
your Black Friday gift: 25% off
Use code BLACKFRIDAY25
before Sunday midnight
.
Bestsellers are going fast.
Sender name
Use your store name so people know who it is from.
Personal touch
First name, used now and then, not in every email.
Main benefit
Put the offer or news in the first few words.
Supporting detail
The preview text adds the code, product or proof.
Real deadline
Honest urgency gives a reason to open now, not later.

Subject line

Preview text

Examples

Subject line and preview text examples for ecommerce emails

The kind of pairs Adflipr AI writes for common store campaigns.
Black Friday sale
42 chars
YB
Your Brand
Your Black Friday gift: 25% off everything
Use code BLACKFRIDAY25 before Sunday midnight. Bestsellers are going fast.
Abandoned cart
31 chars
YB
Your Brand
You left something in your cart
Your items are saved. Check out today and shipping is on us.
Welcome email
27 chars
YB
Your Brand
Welcome in, here is 10% off
Thanks for joining. Use WELCOME10 on your first order.
Back in stock
34 chars
YB
Your Brand
It is back: Classic White Sneakers
Sizes 6 to 10 are in stock again. Only a few pairs left.
Win-back
17 chars
YB
Your Brand
We miss you, Emma
Here is 15% off to come back. Code COMEBACK15 works for 7 days.
New launch
29 chars
YB
Your Brand
New in: the Summer Linen edit
Light fabrics, relaxed fits. VIPs shop 48 hours early.
Old way vs new way

Stop guessing your subject lines

The old way

VS

With Adflipr AI

Frequently Asked Questions

Describe your email or let AI read your campaign. It suggests several subject lines with matching preview text that you can pick, edit or regenerate.

Preview text is the short line shown after the subject in the inbox. It gives readers one more reason to open your email.

Aim for roughly 30 to 50 characters so it shows in full on most phones. Put the most important words first.

Yes. Ask for a personalised version and Adflipr adds the first name field, filled in for each contact when the email is sent.

Yes. Pick two AI suggestions, send each to part of your list, and send the version with more opens to everyone else.

Write subject lines people want to open

Generate subject lines and preview text with AI for every email campaign. Start free on Shopify or WooCommerce.