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HighConvertingEmails

AI email copywriter and optimizer. Rewrite, score, and ship higher-converting emails in seconds.

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© 2026 HighConvertingEmails.com
AI email copywriter, built for conversion

Email copy that actually converts.

Paste any draft. Our AI rewrites it three ways for conversion, scores deliverability, and ships subject lines that earn the open. No fluff. No signup to try.

  • Free to try, no signup
  • 3 conversion-tuned variants per rewrite
  • Scores deliverability before you send
highconvertingemails.com / rewrite
Your draft
Hi there, Just following up on my email from last week — wanted to see if you had a chance to check out our product. We help companies like yours improve their workflows. Let me know if you'd like to chat sometime. Thanks, Alex
AI rewrite
Variant 1 · Direct
92 / 100 No spam triggers Cold-outreach
+34% reply rate
Streaming in 1.8s
3 variants per call
Try it right now — no signup, one free rewrite per day
Your draft
229 chars · one free rewrite per day
AI rewrite
Output appears here.
Trusted by operators at
northwind
OPALSEND
Pierside
loop·io
MERIDIAN
Atelier

Pre-launch — replacing with real customer marks as design partners come online.

One workspace · twelve sharp tools

Everything you need to ship better emails

Each tool is built for a single, sharp job. No bloat. No "AI suite".

Rewrite
3 conversion-tuned variants of your draft, each with rationale per change.
Subject A/B
5–10 subjects with predicted open-rate score + risk flags.
Preheader
Paired with your subject and scored for synergy.
CTA generator
10 CTAs ranked by directness, urgency, and friction.
Score my email
Clarity, CTA, spam, readability, persuasion — with inline annotations.
Deliverability lint
Spam words, all-caps, link-to-text, missing unsubscribe.
Brand voice
Paste 5 past emails — every rewrite sounds like you.
Sequences
Multi-step drips with inter-step coherence checks.
Roast my email
Brutally honest mode — no participation trophies.
Competitive teardown
Drop a competitor's email. Get counter-positioning.
A/B predictor
Pick a winner before you send. Calibrated, not magic.
Localize
Culturally adapt — not translate — into ES, FR, DE, PT-BR.
Rewrite

3 angles, every time. Pick the one that fits.

You get a direct take, a story-led take, and a contrarian take — each tailored to your audience and brand voice, with one-line rationale per change. Skip the blank page and the second-guessing.

  • Streams the first variant in under 2 seconds
  • Variant rationale so you know why each line changed
  • Drop into your ESP, or use our editor
Try the rewriter
Variants
Variant 1 · Direct102 chars

Your reps lose ~4 hrs/week to follow-up writing. We auto-draft from CRM activity. Worth a 15-min look?

Variant 2 · Story127 chars

A VP of Sales told me last week his 40 reps each lose half a day to copy-paste. That's one full headcount of follow-up writing.

Variant 3 · Contrarian103 chars

Most 'sales automation' fails because it sends. The prospect can tell. We draft — your reps still send.

Subject A/B

Subject lines, scored before they ship.

Get 8 candidates with a predicted open-rate and explicit risk flags — spam triggers, length, audience fit. We surface the why so your team learns, not just the what.

  • Predicted open-rate score 1–100, explained
  • Risk flags catch spam-trigger words and ALL-CAPS
  • Pair with the preheader generator for synergy scoring
Generate subjects
Subject lines
84Quick question about your CRM data
79Saw something interesting on your team
73{{firstName}} — half a day, every week
22URGENT: action required ⚠️
38Let's hop on a quick chat?
Score & lint

Catch deliverability problems before send.

Every draft gets local lint instantly — spam words, all-caps ratio, suspicious links — plus a deeper AI pass that flags weak CTAs, buried ledes, and AI-tells in your copy.

  • Instant local checks: no AI cost, no waiting
  • Per-line annotations point to the exact span to fix
  • AI-likeness sub-score — sounds human, not GPT
Score an email
Score panel
87
/ 100 — good. Strongest on audience fit.
Clarity84
CTA71
Persuasion78
Audience fit88
Spam-safety96
Sounds human91
Brand voice applied · “direct, warm, specific”
12
Sharp tools, one workspace
<2s
Average time-to-first-variant
11
AI prompts, all prompt-cached
100+
Templates ready to remix

Trusted by operators who care about open rates

Real customer quotes shown below are illustrative pre-launch placeholders.

"Rewrote our entire welcome series in an afternoon. Open rates climbed from 38% to 51% in the first month."

Sarah K.
Head of Lifecycle · SaaS, 30-person team

"The score-then-rewrite loop is what I always wanted from a copy tool. It actually catches the lazy patterns I write into every cold email."

Marcus T.
Founder · B2B agency

"Deliverability lint caught three things our old ESP didn't. We were getting flagged by Spamhaus and didn't know why until this told us in 2 seconds."

Priya R.
Marketing Lead · DTC commerce brand

Simple pricing

Full AI generations count as 1 run. Lightweight passes (score, lint, CTA, preheader) count as 0.25.

Free
$0/mo
10 runs / mo
  • ✓All core features
  • ✓Watermarked output
  • ✓No templates
  • ✓No brand voice
Starter
$19/mo
250 runs / mo
  • ✓1 brand voice
  • ✓5 personas
  • ✓All core features
  • ✓Template library
Pro
Most popular
$49/mo
1,500 runs / mo
  • ✓Sequences
  • ✓Roast & teardown
  • ✓Localization
  • ✓Version history
  • ✓AI-likeness check
Team
$129/mo
5,000 runs (pooled)
  • ✓5 seats
  • ✓Shared templates
  • ✓API + webhooks
  • ✓2FA
  • ✓Priority support
Free to start

Write the email your customer will actually open.

Paste a draft. Watch our AI rewrite it for conversion in under two seconds. No credit card. No "AI suite" pitch.

  • 10 free rewrites a month, forever
  • Score, subjects, preheaders, CTAs all included
  • No credit card to start

Loved by founders, sales engineers, and lifecycle leads.

FAQ

Do you send my emails?+

No. We are intentionally not an ESP. We optimize your copy; you keep sending where you already send (Mailchimp, HubSpot, Resend, your CRM, anywhere).

How does scoring work?+

Hybrid: instant local lints (spam words, readability, link audit) plus a Haiku pass for clarity, CTA strength, and persuasion structure. Composite is weighted by email kind.

Will my drafts train your model?+

No. We never train on customer content. Drafts live in your workspace until you delete them.

How accurate is the open-rate prediction?+

It's a calibrated rubric, not an ML model trained on engagement data. We label it ‘predicted’ for that reason. Good for relative comparison, not absolute promises.

Can I self-host?+

The product is built on Dokploy-friendly containers (external Postgres, Redis, MinIO). Enterprise self-host is on the roadmap.