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.
- 10 free repurposes monthly
- No credit card required
- Cancel anytime
Try PostSpark — Free, No Signup
1 input → 6 platform-ready pieces · Powered by Claude AI
Voice / Tone
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 $19/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.
Pricing
Simple Pricing. Real Value.
Switch to annual to save ~20% (2 months free)
Free
Start without a credit card
- 10 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 and 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: from $19/month
Questions Before You Start
Related
Explore more PostSpark tools
Your best content deserves more than one platform.
Join PostSpark free. No credit card. 10 repurposes every month. See what Claude AI does with your best ideas.