BEFORE YOU HIT SEND

A specialist look at every campaign, before it goes

Every campaign gets reviewed before it launches: the subject line, the structure, every link, your sender details and the footer. You get the reason and the fix for anything that's off, in plain English, and nothing stops you from sending if you'd rather not change it.

Create your account See how Six and Two works

Subject line, links and footer checked every time
Reason and fix for every finding
Send a test and see your exact reach

Found three things. Easy fixes, promise.

THE PROBLEM

You're too close to your own campaign

You wrote the subject line four times and changed your mind on the third. You moved the button twice. By the time a campaign is ready to send, you've read it so many times you can't see it anymore. That's not a flaw in you. It's just how proofreading your own work goes.

A typo in the subject line, a link still pointing at last month's offer, a footer missing your address: these are the mistakes that slip through precisely because you built the thing. There's nobody else looking over your shoulder before you send, not unless you ask a colleague to check, and most small teams don't have one to spare.

That's the gap a pre-send review fills. Not a spellchecker bolted on as an afterthought, a specialist read of the whole campaign, done every time, before it reaches anyone's inbox.

Wait, is this link even live?

HOW IT WORKS

From finished draft to sent with confidence

The review runs automatically, every time, without you ever having to ask for it.

Finish your campaign

Build it in the drag-and-drop editor or let the AI draft it from your brief. Either way, once it's built, it's ready for review.

We check it before launch

The subject line and preheader, the structure and readability (including with images turned off), every link, your sender details and the footer.

See every finding explained

Each one comes with the reason it matters and the fix, in plain English, not a jargon-heavy warning code.

Send yourself a test

At any step, send a test to see exactly how the campaign lands, and exactly how many people you're about to reach.

Decide, then send

Nothing in the review blocks your campaign. You choose what to change and when you're ready to go.

IN DETAIL

What the review actually looks at

Five things, checked on every single campaign, no exceptions.

SUBJECT LINE & READABILITY

Readable before anyone even opens it

The subject line and preheader are the first, and sometimes only, part of your email a reader sees. The review checks both for length and clarity, so you know what shows up in a crowded inbox before you find out the hard way.

Structure gets checked too, including what your email looks like with images turned off. Plenty of inboxes block images by default, so if your whole message lives in one picture, the review flags it before your reader sees a blank box.

Subject line and preheader length
Structure checked with images off
Flags anything that won't read without images

Pre-send review

Subject line length

Preheader cut off on mobile

Reads fine with images off

Structure clear and scannable

Illustration · sample data

Link & sender check

Links tested 12 of 12 resolve

Old URL found Footer link

Sender name Matches your brand

Footer complete

Illustration · sample data

Checked every link. All clear.

LINKS & SENDER DETAILS

Every link checked, every sender detail confirmed

Every link in the campaign gets tested, so a broken link or one still pointing at last month's offer gets caught while it's still free to fix, not after a thousand people have clicked it.

Your sender details and footer get checked too: the name and address your reader sees, and the information that has to be there by law. It's the kind of thing that's easy to forget and expensive to get wrong.

Every link tested before you send
Sender name and reply address checked
Footer checked for required details

TEST SENDS

See exactly who you're about to reach

Send yourself a test at any point while you're building or after the review finishes. You'll see the campaign exactly as a reader would, in your own inbox.

Before you commit, you also see exactly how many people the campaign is about to reach. No estimate, no range: the real number, so there's no guessing between you and send.

Test send at any step
See the campaign as a reader would
Exact reach shown before you send

Test send

Test sent toyou@yourbusiness.com

Recipients4,218

Credits to send4,218

Send campaign

Illustration · sample data

WHAT IT MEANS FOR YOU

Confidence before you click send

A review you don't have to ask for, catching the mistakes you're too close to see.

Nothing slips through at the last minute

Every campaign gets the same specialist read, whether it's your first send or your five-hundredth. The things that are easy to miss when you've been staring at a draft for an hour get caught before anyone else sees them.

Pre-send review

Subject line length

Preheader too long

All links resolve

Footer complete

Illustration · sample data

Mistakes stay free to fix

Every finding shows up while the campaign is still a draft, not after it's already landed in a few thousand inboxes.

Nothing sends without your okay

The review tells you what it found. It never sends anything and never blocks you from sending either. The decision stays yours.

Know your real reach first

Send a test, see your exact recipient count, and commit only once you know precisely who's about to get this email.

Plain English, not warning codes

Every finding comes with why it matters and what to do about it, written the way you'd explain it to a colleague.

COMPARED

What a pre-send review actually looks like

A typical email platform

A spellchecker, if that
Cryptic warning codes
Blocks your send until you comply
No idea how many people you'll reach until it's sent
Mistakes found by the first few hundred readers

Six and Two

A specialist review. Subject line, links, footer and sender details checked on every campaign.
Plain English. Every finding comes with the reason and the fix.
Never blocks you. You decide what to change and when to send.
See your exact reach. Test it and know your recipient count first.
Mistakes found before anyone reads them, while they're still free to fix.

QUESTIONS

Everything about the pre-send review

Will the review stop my campaign from sending?

No. It tells you what an inbox provider or a reader would notice, while there's still time to change it. You decide what to do with each finding.

What exactly does it check?

The subject line and preheader, the structure and readability of the email (including with images turned off), every link, your sender details and the footer.

Do I get told why something's flagged?

Yes. Every finding comes with the reason it matters and a plain-English fix, not just a warning icon.

Can I see how my email reads with images off?

Yes. The review checks structure and readability including with images off, so you know the email still makes sense if a reader's inbox blocks images.

Can I test it before sending to everyone?

Yes. Send yourself a test at any step and see exactly how many people you'll reach before you commit to sending.

Does this check for CAN-SPAM compliance?

It checks your sender details and footer are present and complete, which covers the basics the CAN-SPAM Act asks for: honest headers, a physical address and a working opt-out.

Who or what does the review, exactly?

Every campaign gets a specialist read before it goes out, looking at it the way an inbox provider or a reader would, not just a spellchecker.

Is this available on every plan?

Yes. Every feature, including the pre-send review, is on every plan.

WORKS WITH