The MCP that knows what gets clicks.
Checked for predicted clicks, learned from years of real send results.
Topline is an MCP that helps marketers get more from every campaign. It plugs into Claude and ChatGPT and predicts how well each line of copy will perform, from subject lines to ad headlines. Send the strong ones, fix the weak ones, and turn the same list, budget and effort into more clicks and more revenue.Better top lines drive top-line revenue.
Just good copy.
Topline checks every line before it goes out. Weak drafts get rewritten, tests only compare copy worth sending, and the sends you can't test still perform like you did.
The one you send- 01
Catch the weak ones.
Topline flags a line that's unlikely to get clicked before it reaches a single inbox, so your AI rewrites it instead of you finding out on Monday.
Winter Sale: 30% Off All OuterwearNeeds work - 02
Send good copy, every time.
Every campaign clears the same bar, including the ones written at 5pm on a Friday.
- 03
Stop paying to test bad lines.
A split test with a weak variant spends part of your list on a line that was always going to lose. Check first, and every variant you test is worth sending.
- 04
Get a read when you can't test.
Most copy never gets a fair test. The list is too small, the send is a one-off, or the headline is live before results could come back. Topline gives it a prediction anyway.
Small listsOne-off sendsSMS and pushWeb and ad headlinesLast-minute sends - 05
Decide in the chat, not next week.
No waiting on results to pick a line. You get the verdict where you're already writing.
Test the good ones against each other.
A test is only as good as the lines in it. When one side is weak, part of your list gets the weaker email and all you learn is that it was weak. Check the drafts first, and your test compares two good options.
Half the list gets a line that was always going to lose.
Both halves get copy worth sending, and the test tells you which good line is better.
Ask. Check. Send.
Topline lives inside the assistant you already write with. There's nothing to install on your email platform, and nothing new to learn.
- #1
Ask for copy
"Give me a subject line for the spring drop." Write your brief the way you always do.
- #2
Topline checks it
Neural 2.1, a model trained on years of real send results, tells your AI if the copy is likely to get clicked. If it isn't, your AI rewrites it until it is.
- #3
Send the strong one
Copy it, or have your assistant build the campaign in your email platform. Ask it to share the results afterwards and Topline shows you how it did.
Free on every plan
Every channel. Every line.
From subject lines to push to homepage headlines: if someone has to click it, Topline can check it.
- Email subject linePredicted clicksThe jacket you almost bought is 30% offStrong
- PreheaderPredicted clicksPlus free returns, and your size is still in stock.Good
- SMSPredicted clicksNorthfold: 30% off outerwear ends at midnight. Reply STOP to opt outStrong
- PushPredicted opensBack in stock: the Harbor parka, in your sizeGood
- Ad headlinePredicted clicksWarm coats, built to last. Free shipping over $75Strong
- Web headlinePredicted clicksCoats for the long way homeGood
- Social postPredicted clicksTag someone who still wears their coat from 2016. It's time.Good
Why not just ask your AI if it's good?
You can. It'll probably say yes. It's marking its own homework, and it learned from the internet, not from what subscribers actually click.
"Great subject line. It's clear, it leads with the offer, and the capitals make it feel like a big event."
Knows your brief, your offer and your tone. Has never seen your click-through rates.
Unlikely to get clicked. Lines like this one tend to blend into a crowded sale inbox.
Neural 2.1 learned from billions of marketing sends. It has one job: predicting what gets clicked.
Head to head: Topline's verdict against the assistant's own judgment, on campaigns the model has never seen. The result goes here once it's independently checked.
Tell it how the send did.
After a campaign goes out, ask your assistant to share the results with Topline: the clicks and the total sent, from whichever email platform you use. Topline shows how each line really did next to its earlier verdict, so you can compare the opinion with the outcome.
- On every plan, and sharing results doesn't use credits
- Your assistant fetches the numbers. Topline never connects to your email platform
- Campaign totals only. Never subscriber lists, recipient addresses or individual events
Priced for people who send on a Friday.
Try it on this week's campaigns.
- 5 credits a month
- 1 brand, 1 seat
- Works in Claude and ChatGPT
- Compare verdicts with aggregate results
- Check history and CSV export
For one brand, sending every week.
- 50 credits a month
- 1 brand, 1 seat
- Works in Claude and ChatGPT
- Compare verdicts with aggregate results
- Check history and CSV export
For teams and multi-brand stores.
- 150 credits a month
- 3 brands, 3 seats
- Works in Claude and ChatGPT
- Compare verdicts with aggregate results
- Check history and CSV export
For agencies running client sends.
- 500 credits a month
- 15 brands, 10 seats
- Works in Claude and ChatGPT
- Compare verdicts with aggregate results
- Check history and CSV export
Fifteen brands. One login.
Switch brands mid-conversation, keep each client's results separate, and send them a report that shows your subject lines are backed by data, not vibes.
Topline for agencies →No. Your assistant writes. Topline checks. Keeping those jobs apart means you can use any assistant and any writing style, and the verdict stays neutral.
No. Checking works straight away, and Topline never connects to your email platform itself. If your assistant can reach it, the assistant can share how each send did. That's free on every plan.
Neural 2.1 learned from many brands and works from your first check. It improves your odds rather than guaranteeing a result. Share your results and you'll see how its verdicts hold up on your own sends.
That's where a prediction is most useful. Topline checks every draft, so you get a read on copy you could never test fairly.
We store the drafts you check, plus any aggregate results you choose to share: clicks and total send volume, and opens and revenue if included. We don't ask for subscriber lists, recipient addresses or individual events, and we don't currently use your copy or results to train models.
No. Sharing results is free and optional on every plan. It lets you compare Topline's earlier verdict with what happened after the send.
Better top lines.
Better top line.
Add Topline to Claude or ChatGPT and check your next send.