CallHub vs Postscript
CallHub
callhub.io
Postscript
postscript.ioSide by side
| Figure | CallHub | Postscript |
|---|---|---|
| Price from | $0.05/mo | $100/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 3 | 5 |
| Spec score · SMS Marketing Software | 9.4 (#1) | 7.9 (#24) |
| Integrations | Direct integrations include NGP VAN, NationBuilder, Action Network, PDI, Salesforce, EveryAction, CiviCRM, Blackbaud, Blue State Digital, and Freshsales. | Postscript's integration directory groups connections into categories including ecommerce platforms, email, customer support, loyalty, reviews, analytics, and workflow automation. |
| Security and compliance | CallHub states that it is SOC 2, GDPR, ISO 27001, and HIPAA compliant. | Postscript says its features and list-growth tools are built to follow TCPA, mobile carrier, and other regulatory guidelines. |
| Support | Essential includes live chat support; Scale offers priority support and an optional assigned Customer Success Manager. | Customer Experience Advocates provide live chat Monday–Friday from 6am PT to 5pm PT and email support; Professional and Enterprise plans include dedicated onboarding and priority support. |
Plans
Postscript
- StarterFree
- Growth$100 a month
- Professional$500 a month
- Postscript AI Plan$699 a month
- EnterprisePriced on request
In their own words
CallHub
CallHub provides campaign and digital organizing tools for calling, broadcasts, texting, relational organizing, and workflow automation. Its channels include call center software, text and voice broadcasts, text-to-join, email outreach, and workflows. Phone banking offers predictive, power, auto, and preview dialers, along with branching scripts, inbound and patch-through calls, and AI-powered Smart Insights. Peer-to-peer texting can send initial messages automatically and includes trackable shortened links, profanity filtering, surveys, and data integration. Listed integrations include NationBuilder, Blackbaud, NGP VAN, Action Network, CiviCRM, Salesforce, Freshsales, Zapier, and OSDI; the API supports custom two-way data flows with another app. CallHub has Android and iOS apps, plus a web product compatible with Windows and Mac. Essential is listed at $0.05 a month at standard rates, with free credits to get started, and limits of 10,000 contacts and 10 agents. Scale lists unlimited contacts and agents, but no price is given.
Postscript
Postscript is an agentic retention marketing platform for ecommerce brands using SMS, RCS, email, and future channels. Marketing plans include a visual flow builder, automation templates, subscriber acquisition tools, segmentation, analytics, response management, and custom attribution windows. Its Agentic Context Platform stores brand and customer context so AI agents can act at individual subscriber level, and it is included with every plan at no extra cost. The AI Plan adds Brand Center controls for message tone and knowledge, Infinity Testing for message variants, and Shopper for personalized journeys. Integrations cover ecommerce, email, support, loyalty, reviews, analytics, and workflow automation. Professional includes API access, with documentation for the API, JavaScript SDK, and webhooks. The listed Starter plan is free with a $49 monthly minimum spend; other named plans run from $100 to $699 monthly, while Enterprise pricing is custom. A trial provides $100 credit for 30 days.