AI adapts subject line tone and format to each audience segment, so every email feels personal and worth opening.
Ship subject lines that are predicted to win
Get multiple hooks with expected lift, matched to your tone and audience — with human approval built in.
- Brand-safe
- Predicted lift
- Human-in-the-loop
- AI subject line helper
Companies that trust our solutions
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The Problem
Opinion wars over subject lines
No time to test more than one idea
Preheaders are an afterthought
Problem Statement
Adaptix Solution
AI suggests 5+ hooks with rationale
One-click A/B setup from the helper
Preheader is generated to complement the hook, not filler text
Solution Statement
Never Guess Your Subject Line Again
From first draft to final send, AI suggests, scores, and A/B tests subject lines to match the right message with the right inbox moment.
Hook families (curiosity, urgency, value, proof)
Mobile preview / truncation safe
Compliance-safe phrasing (no “scammy” triggers)
One-click A/B setup
Preheader pairing
Reply-friendly angle for SDR / CS outreach
Match subject line style to audience type
Softer for nurture
Higher urgency for warm trials
Conversational / reply-friendly for outbound SDR
Keeps tone consistent with region and brand policy
Safety and Branding Guardrails
AI enforces your brand and safety rules in every subject line, so you move faster without risking reputation.
“Banned word” list
Tone guardrails
Spam trigger checks
Keeps tone consistent with region and brand policy
Connect your stack in minutes
Bring contacts and events from tools you already use
From Insight to Subject Line in Three Steps
We analyze your audience, apply your brand guardrails, and deliver ready-to-send subject line variations for your next campaign.
Pick the angle family
Review predicted lift + risk flags
Approve variants and launch A/B
Every lead instantly flows to the right place
Auto-tag, score, and trigger automations the moment the form submits.
We’ll import your best & worst subject lines
We train on what has historically worked — and what tanked — so recommendations start smart.
Pricing Built Around Your Audience
Choose a contact tier and unlock the features that match.
How many contacts do you have?
Basic
For Essential Monitoring And Reporting Needs- 1 User
- 1GB Storage
- 10x Contact List (Sending Limit)
Growth
For Multiple Team Or Group Reporting Needs- Everything In Basic
- 3 User
- 3GB Storage
- 12x Contact List (Sending Limit)
Pro
For Support Of Multiple Businesses Or Products- Everything In Growth
- 5 User
- 10GB Storage
- 15x Contact List (Sending Limit)
Enterprise
For Support Of Multiple Businesses Or Products- Everything In Professional
- Unlimited Users
- 25GB Storage
- Priority Support
How AI-Driven Subject Lines Changed Their Open Rates
“No more opinion wars.”
— Director, Lifecycle
“Reply rates are up for SDR.”
— Sales Manager
“Preheaders finally pull their weight.”
— Content Lead
FAQs
The Subject Line Helper analyzes your email content and campaign goal to suggest multiple high-performing subject line options designed to boost opens and engagement in a few clicks
It uses AI language models trained on large sets of marketing emails to understand tone, keywords, and audience intent, then generates subject lines that match your brief and brand style.
Yes. You can specify tone (e.g., promotional, informational, urgent, playful) and constraints like length, use of emojis, or personalization tokens, and the helper tailors suggestions accordingly.
Yes. The helper can generate multiple variants for the same campaign so you can set up A/B subject line tests and compare open rates to learn what works best for your audience
The Subject Line Helper is embedded in the email editor, so you can draft your email, click “Suggest subject lines,” pick or tweak a variant, and ship campaigns without leaving Adaptix.ai.
Connect your stack in minutes
Lean set of tools that cover the full loop—create, send, learn.
Why Adaptix
- Contact‑based pricing
- Unlimited teammates
- Deliverability guardrails
