Turn any blog post into an email newsletter — in your voice.
Paste your blog URL. PostSpark writes a subject line (A/B tested), preheader, intro hook, scannable body, and a CTA. Ready to paste into Beehiiv, Substack, ConvertKit, or Mailchimp.
- 3 free repurposes monthly
- No credit card required
- Cancel anytime
Input
Output — in your voice
● LiveTrusted by 2,400+ creators & agencies shipping daily
The problem · The fix
What's costing you hours — and how PostSpark removes it.
What's draining your week
- Rewriting a blog post as an email takes an hour every week.
- Most newsletters are just a copy-paste of the blog — open rates suffer.
- Generic AI writes corporate-sounding emails nobody opens.
What PostSpark gives you
- Brand Voice AI keeps the email in your tone, not GPT default.
- 5 subject line variants per email with predicted open-rate scoring.
- Free for 3 newsletters/month, Pro at $24/mo unlimited.
Your workflow
How it works for you
Paste blog URL
Or upload a markdown file.
Pick the tone & length
Casual, professional, witty — and short, medium, or full.
Copy the newsletter draft
Paste into your ESP and send.
Simple pricing. Real value.
Start free forever. Upgrade whenever you're ready to ship a month of content in an afternoon.
Switch to annual for two months free.
Free
Try it without a credit card.
- 3 repurposes per month
- All content formats
- Tweet, LinkedIn & email outputs
- Copy and export
- Brand Voice AI
- Unlimited repurposes
Pro
For creators who publish daily.
- Unlimited repurposes
- All content formats
- Brand Voice AI training
- Spark Copilot assistant
- AI Image Studio
- Hook Lab + virality scoring
- SEO Blog Writer
- Content Calendar
- Priority generation
- History & regeneration
30-day money-back guarantee
Agency
For teams and agencies.
- Everything in Pro
- 5 team seats
- Multi-brand workspaces
- Client approval links
- White-label review pages
- Agency analytics rollup
PostSpark replaces: Jasper ($49) + Buffer ($15) + Canva Pro ($15) + Surfer SEO ($89) = $168/month
PostSpark Pro: $19/month billed annually.
FAQ