Postscript vs Substack
Side-by-side plans, pricing, and feature gates for Postscript and Substack, verified . Postscript is primarily sms marketing; Substack is primarily email marketing.
Plans side by side
Every published plan from each vendor, with the headline monthly anchor price. Some prices scale with subscriber count or seats; full detail lives on each tool's page.
Postscript
- Starter$0/mo
- Growth$100/mo
- Professional
Most popular
$500/mo - EnterpriseCustom
Substack
- Standard
Free to publish; 10% of paid subscription revenue
Free
When Postscript wins
- Shopify e-commerce stores doing $1M+ GMV with active SMS list growth
- Brands graduating from Klaviyo SMS or Attentive on cost
- Teams wanting a Shopify-native SMS experience separate from email
Where Postscript is the wrong fit
- B2B companies, where SMS is not a standard channel
- Creators or info-product sellers whose per-message economics do not match
- Brands without an SMS-friendly Shopify segment to drive ROI
When Substack wins
- New writers with no list yet who want platform-driven discovery
- Writers who would rather give 10% of revenue than pay a flat $20-100/month with no readers
Where Substack is the wrong fit
- Established creators with a paid list above ~5,000 subscribers; the 10% share exceeds what Kit, Ghost, or beehiiv would charge in flat fees at that scale
- Operators who want full control over deliverability, subscriber data, and migration optionality
- Brands needing automations, segmentation, or marketing tooling
Common questions
- Is Postscript cheaper than Substack?
- Both Postscript and Substack have free or custom entry pricing, so a direct entry-tier price comparison is not meaningful.
- Does Postscript or Substack have a free plan?
- Only Substack has a permanent free plan. Postscript only offers a free trial.
- Are Postscript and Substack in the same category?
- No. Postscript is primarily a sms marketing tool; Substack is primarily a email marketing tool. They overlap on use case but sit in different primary categories, so the comparison is between adjacent tools rather than direct competitors.
- Which has more plans, Postscript or Substack?
- Postscript ships 4 plans; Substack ships 1. Postscript's longer ladder gives more granular upgrade steps, which can mean smoother price escalation as your team scales.
- Where can I see alternatives to Postscript or Substack?
- Each tool has a dedicated alternatives page on TierGauge with ranked options and verified pricing: /alternatives/postscript for Postscript and /alternatives/substack for Substack. Alternatives are derived from each tool's editor-flagged competitors plus same-category tools we track.
Postscript: https://postscript.io/pricing · Substack: https://substack.com/going-paid
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.