Cold email spintax
that actually works.
The tool that started it all. Generate spintax with millions of variations — not just synonym swaps, but entire sentence structures rewritten. Every email unique. Every message sounds human.
Used by hundreds of cold email agencies worldwide. Built because we couldn't find anything that actually got the job done.
Original
I noticed your agency specializes in B2B lead generation.
I saw that your team focuses on B2B lead gen.
Your agency's B2B lead generation work caught my eye.
I came across your B2B lead gen services.
Noticed you guys are deep in B2B lead generation.
Your focus on B2B lead generation stood out to me.
The problem
Spintax seems easy.
It's not.
Most people either under-spintax and create obvious patterns that destroy deliverability, or they go overboard and the emails end up — kinda embarrassing to read.
I noticed your agency specializes in B2B lead generation.
I noticed your agency specializes in B2B lead generation.
I noticed your agency specializes in B2B lead generation.
I noticed your agency specializes in B2B lead generation.
I noticed your agency specializes in B2B lead generation.
5 emails. 1 unique version. Spam filters love this.
I saw that your team focuses on B2B lead gen.
Your agency's B2B lead generation work caught my eye.
I came across your B2B lead gen services.
Noticed you guys are deep in B2B lead generation.
Your focus on generating B2B leads really stood out.
5 emails. 5 unique versions. Each one sounds human.
Under-spintax
Swap 3 words and call it a day. ESPs see the pattern instantly. Straight to spam.
Over-spintax
"I {wanted|desired|craved} to {reach out|extend my hand|connect}..." Nobody talks like that.
GPT prompting
We tried. Dozens of prompts. The output always sounds robotic or loses the original intent.
The solution
R&D that actually paid off.
After trying every automation option with no success, we invested serious time in R&D and built a tool that really gets the job done with high accuracy.
Millions of variations
Not just word swaps. Entire sentence structures get rewritten. Your 100-word email generates millions of unique combinations.
2.8M+
avg. variations per email
Review & edit
User-friendly interface to review, edit, or delete any sentence variation. Full control over what goes out.
100%
control over output
Instant previews
Generate example variants for quick previews. See exactly what your recipients will read before you send.
< 3s
generation time
Example output
I saw that your team focuses on B2B lead gen — and from what I've seen, your results speak for themselves. Our team works with agencies similar to yours to streamline the outbound process so your team can spend more time closing and less time prospecting.
I came across the fact that your agency is deep in B2B lead generation — based on what I found, the work you're putting out is solid. We partner with agencies like yours to take outbound off your plate so your team can do what they do best — close deals.
Your agency's B2B lead generation work caught my eye — and from what I can see, you're doing great work. We help agencies like yours automate outbound prospecting so your team can focus on closing instead of finding.
The interface
Paste your copy. Get spintax.
Choose your sequencer format. Paste your original cold email. Hit spintax. Done. Review, edit, and export.
Choose sequencer
Original copy
Sentences: 4 | Words: 47
Hi {{first_name}}, I noticed your agency specializes in B2B lead generation — and from what I can see, you're doing great work. We help agencies like yours automate outbound prospecting so your team can focus on closing instead of finding. Would it make sense to chat for 15 minutes this week?
Spintaxed copy
Generating...
The backstory
The tool that started it all.
Born from agency pain.
We were running a cold email agency. Sending thousands of emails a day. And the spintax problem was killing us — every variation had to be unique enough to pass spam filters, but natural enough to sound human.
We tried GPT prompting. We tried manual writing. We tried every tool on the market. Nothing worked at the quality and scale we needed. So we built our own.
Shared it on LinkedIn. Agencies started using it. Hundreds of them. Spintaxer became the first product we ever shipped — and the proof that building tools from real pain creates things people actually want.
Need better cold email infrastructure?
Spintaxer is one piece of the puzzle. We build complete outbound systems for B2B agencies — from prospecting to deliverability to closing.
30-minute call · No pitch deck · No bullshit