Postmark vs Postscript
Side-by-side plans, pricing, and feature gates for Postmark and Postscript, verified . Postmark is primarily transactional email; Postscript is primarily sms 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.
Postmark
- Free
100 emails per month, no credit card required
Free - Basic
Entry paid tier with 10,000 emails/month and 5 custom domains
$15/mo - Pro
10,000 emails/month with inbound processing and customizable retention
$16.50/mo - Platform
Unlimited domains and users with the lowest overage rate
$18/mo - High-Volume
Custom pricing for volumes above standard tiers
Custom
Postscript
- Starter$0/mo
- Growth$100/mo
- Professional
Most popular
$500/mo - EnterpriseCustom
Limits at the entry paid tier
Compares Basic (Postmark) against Growth (Postscript). Both are the lowest-priced non-free, non-custom plan on each side.
| Limit | Postmark | Postscript |
|---|---|---|
| Emails / month | 10,000 | · |
When Postmark wins
- SaaS apps prioritizing receipt and notification deliverability
- Teams that need detailed inbound email parsing alongside outbound sends
- Companies that need 365-day data retention for compliance
Where Postmark is the wrong fit
- Hobby projects with bursty traffic (Mailgun's 100/day or Resend's 3,000/month are friendlier than the 100/month Free cap)
- Marketing teams (use Mailchimp or Kit)
- Buyers who want a single vendor for marketing and transactional email
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
Common questions
- Is Postmark cheaper than Postscript?
- Both Postmark and Postscript have free or custom entry pricing, so a direct entry-tier price comparison is not meaningful.
- Does Postmark or Postscript have a free plan?
- Only Postmark has a permanent free plan. Postscript only offers a free trial.
- Are Postmark and Postscript in the same category?
- No. Postmark is primarily a transactional email tool; Postscript is primarily a sms 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, Postmark or Postscript?
- Postmark ships 5 plans; Postscript ships 4. Postmark's longer ladder gives more granular upgrade steps, which can mean smoother price escalation as your team scales.
- Where can I see alternatives to Postmark or Postscript?
- Each tool has a dedicated alternatives page on TierGauge with ranked options and verified pricing: /alternatives/postmark for Postmark and /alternatives/postscript for Postscript. Alternatives are derived from each tool's editor-flagged competitors plus same-category tools we track.
Postmark: https://postmarkapp.com/pricing · Postscript: https://postscript.io/pricing
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.