The blank subject line is where campaigns go to die.

Describe the email in a sentence and get a full draft — three scored subject lines, body copy, and a call to action. Rewrite it warmer or shorter, have the spam words and reading level checked, then let the send decide which subject wins.

Content

Write with AI

9.2
WarmerShorterMore technicalMore direct

Subject lines

Your send limit just doubled

92

A bigger daily limit is waiting

78

ACT NOW — limits increased!!

34

Good news — your daily limit is now 40,000 emails.

Nothing to do — the new limit is already live on your account, and it applies to campaigns you have already scheduled.

40,000 emails a day, up from 20,000

Same warmup schedule, no re-verification

See your new limit

— The TrueEmailer team

Copy check

Swap: “RISK FREE” → “no card needed”

One line

of brief is enough to get a full draft

3 subjects

generated and scored before you pick

Checked

for spam words, length and reading level

Everyone can build the email. Somebody still has to write it.

Get to a first draft in one sentence

One sentence in, a whole email out

Describe who it's for and what's changed. You get a subject line, preview text, body copy and a call to action — a first draft to argue with, rather than a blank page to stare at.

Three subject lines, each one scored

Steer it until it sounds like you

What's this email about?

Draft

Your send limit just doubled

Good news — your daily limit is now 40,000 emails.

✍️

Subject, body and CTA in one pass

From brief to send

Three steps and the copy is written

01

Say what the email is about

One sentence — who it's for and what's changed. That's the whole input. You get a subject line, preview text, body copy and a call to action back.

Brief

Tell Growth customers their daily send limit doubled

02

Steer it until it sounds like you

Warmer, shorter, more technical, more direct — or type your own instruction. Rewrites keep the meaning and change the voice, rather than starting over.

WarmerShorterMore technicalMore direct

Your daily limit just doubled. Nothing to do — it's already live.

03

Let the numbers pick the subject

Every generated subject line is scored before you choose, and you can A/B two of them on a slice of the list so the winner goes to everyone else.

Your send limit just doubled

92

A bigger daily limit is waiting

78

ACT NOW — limits increased!!

34

Most bad sends were bad copy before they were bad numbers.

Fix it before the list sees it

The copy problems caught early

Spam phrasing flagged with a replacement suggested, reading level graded, and subject and preview text measured against what actually shows on a phone. Cheaper to fix here than after a bad send.

Write the boilerplate once

Let the send settle the argument

Copy check

9.2 / 10

Reading level: grade 7

Subject 28 characters — fits on mobile

Link-to-text ratio healthy

Swap: “RISK FREE” → “no card needed”

Length

Subject

28

Preview text

74

Body words

118

🧐

The words filters dislike, flagged

Everything about the copy

Writing it, fixing it, and finding out what worked

The layout lives in Templates and the merge tags in Personalisation. This is the part that decides whether anyone reads past the subject line.

A draft from one sentence

Describe the email and get subject line, preview text, body copy and a call to action — a starting point to edit, not a blank page to stare at.

Three subject lines, every time

Never just one suggestion. You get options with different angles, so choosing is a comparison rather than a guess.

Subject lines scored

Each one rated before you pick, with the reasons — all caps, exclamation marks, length, or a phrasing that reads as a promotion.

Tone and length controls

Warmer, shorter, more technical, more direct. One click rewrites the copy while keeping what it actually says.

Your own instructions

Type what you want changed — 'mention their renewal date', 'lose the second paragraph' — instead of picking from a fixed menu.

Spam wording flagged

Phrases filters dislike are called out with a replacement suggested, so the copy problem is fixed before the deliverability problem starts.

Reading level

Copy graded for readability, because an email that needs re-reading is an email that gets archived.

Length that fits

Subject and preview text measured against what actually shows on a phone, and body length against what people finish.

Reusable snippets

Save the legal footer, the sign-off, the product one-liner. Edit the snippet once and every email using it updates on the next send.

Subject line A/B tests

Send two versions to a slice of the list, and the one that wins goes automatically to everyone else.

What worked, remembered

Past winners are kept, so the suggestions you get next time lean towards the phrasings your list actually responds to.

Rewritten for each segment

Ask for the same email aimed at a different audience and get genuinely different framing per segment, not a find-and-replace.

Ready to get started?

Launch your first AI campaign in no time and unlock the full potential of the hundreds of emails you send daily.

You're in safe hands

Real reviews from teams sending with TrueEmailer every day.

Trustpilot

Great 4.1 out of 5

Based on 5 reviews

Verified

I am using it for CoinPears weekly

I am using it for CoinPears weekly newsletter, TrueEmailer is working well I must say — engagements are improved and opening rate is increased. Highly recommend 👌

Ayesha Ghaffar

Jun 6, 2026

Verified

We are using TrueEmailer for CipherBC

We are using TrueEmailer for CipherBC.com and it's working like a charm. Very useful features and the AMP email part is really out of the box.

Raja Saad

May 9, 2026

Verified

Overall great experience

Overall great experience. Finally a tool that prioritizes inbox placement.

Amy Wilson

Mar 31, 2026

Showing our latest reviews

Review us on Trustpilot
FAQ

Questions about content

What AI writes, how much steering it needs, and what the scores actually measure.

One sentence describing the email — who it's for and what's changed. You get three subject lines, preview text, body copy and a call to action back, all of it editable like anything else you'd type yourself.

Ready to get started?

Launch your first AI campaign in no time and unlock the full potential of the hundreds of emails you send daily.