Comparing BigCommerce and Postscript is like comparing a full ecommerce engine to a specialized SMS rocket. BigCommerce builds your entire online store, while Postscript supercharges one powerful marketing channel. Your choice depends on whether you need a platform or a plugin.
Best for: Growing brands needing a reliable, scalable ecommerce platform, B2B and wholesale businesses requiring customer-specific pricing
Best for: Shopify stores focused on maximizing SMS marketing ROI, Brands needing to grow their first-party subscriber list quickly
Robust tools meet customer service disconnect.
We observe BigCommerce heavily emphasizing high-level enterprise tools, like guaranteed 0% transaction fees and robust infrastructure for scalability. However, user reviews detail severe service issues, including unexpected server outages and deeply unresponsive customer support, even for priority users. Overall, BigCommerce provides impressive technical capability that is unfortunately undermined by inconsistent stability and poor customer experience.
Shopify's SMS specialist for serious ROI.
We found Postscript to be a powerful, dedicated SMS marketing tool built exclusively for Shopify. Its focus on compliance, AI-driven optimization, and strategic support makes it a top choice for brands ready to invest in a high-return channel. Overall, it's an excellent, niche solution for Shopify merchants prioritizing SMS revenue growth.
BigCommerce Essentials is a top-rated ecommerce platform designed specifically for fast-growing businesses, including high-volume operations and B2B SMBs. It operates as a high-performance platform that truly scales with you. Built-in flexibility means you have the freedom to customize your store and save money at the same time. You get robust features that ensure efficient operation, allowing you to focus on expanding your brand and attracting more shoppers. ✅
✨ Postscript is a dedicated SMS marketing platform built specifically for Shopify stores. It's for ecommerce brands that want to move beyond generic blasts and build a profitable, conversational channel with their customers.
The service combines specialized software with a strategic team of SMS experts. Their goal is to transform your list into a reliable, high-ROI revenue stream through compliant and effective messaging.
We highlight the main differences and pick a winner for each feature.
BigCommerce is a complete online store builder. Postscript is a specialized SMS marketing add-on.
BigCommerce provides the entire foundation for your online business. You build your site, manage products, process payments, and fulfill orders all in one place. It's designed to be your central hub for selling online. Postscript does not build a store. It plugs into your existing Shopify store to add powerful SMS capabilities. Its sole focus is growing your subscriber list and turning texts into sales. The key difference is scope. BigCommerce is the engine for your business. Postscript is a high-performance upgrade for your marketing.
BigCommerce offers full commerce management. Postscript doesn't handle products or payments.
BigCommerce includes everything from product pages and inventory to an optimized one-page checkout. It supports 55+ payment gateways and guarantees 0% transaction fees on Enterprise plans. Postscript has zero ecommerce features like product catalogs or checkout flows. It connects to Shopify to send messages about orders, but it doesn't manage the store itself. This is the most fundamental trade-off. Choose BigCommerce if you need a platform. Choose Postscript if you already have a platform and need better SMS.
Postscript is built for SMS dominance. BigCommerce offers basic integrations.
Postscript is a dedicated SMS platform with advanced AI. Its Infinity Testing can optimize hundreds of message variants. It claims merchants see an average 34x ROI. BigCommerce doesn't have native advanced SMS tools. You'd rely on third-party integrations for similar features. It provides the store, not the specialized marketing channel. If SMS revenue is your top priority, Postscript's focused expertise and tools are unmatched by BigCommerce's generalist approach.
BigCommerce is a full platform to learn. Postscript integrates seamlessly into a known platform.
Learning BigCommerce involves mastering a full ecommerce system: design, products, shipping, and marketing. It offers Launch Coaches to help with setup. Postscript is designed for Shopify users. Integration is typically straightforward. Its world-class editor makes list-building tools like popups easy to use. For a new online store, BigCommerce has a steeper learning curve. For an established Shopify store adding SMS, Postscript is simpler to implement.
BigCommerce uses quote-based pricing for scale. Postscript has transparent, usage-based tiers.
BigCommerce's Enterprise pricing is custom and requires a quote. Essentials plan pricing isn't explicitly listed. The value is in platform reliability and zero transaction fees. Postscript's pricing is clear: a platform fee plus per-message rates. Plans start at $0/month. The value is directly tied to your SMS list size and sending volume. BigCommerce pricing is for platform access. Postscript pricing is for channel performance. The models serve very different budget considerations.
BigCommerce offers 24/7 live support. Postscript has weekday business hours.
BigCommerce provides 24/7 live, US-based support for all customers. Enterprise plans get priority routing. This is critical for a core platform. Postscript offers live chat and email support Monday-Friday, 6am-5pm PT. Professional plans include priority support. It's focused on strategic SMS help. Support availability differs. BigCommerce covers all hours for platform issues. Postscript covers business hours for marketing strategy and compliance questions.
BigCommerce scales with storefronts and APIs. Postscript scales with your subscriber list.
BigCommerce scales via Multi-Storefront for new brands and unlimited API calls for integrations. It's built for businesses growing in complexity and volume. Postscript scales as your list grows. You move through pricing tiers based on subscriber count and message volume. It grows your revenue per customer. BigCommerce scales your business operations. Postscript scales your marketing effectiveness within one channel.
Since pricing for the most scalable options is custom, the UI requests a quote. The detailed information below relates specifically to the features included in the Enterprise service level. If you are looking for small business solutions, BigCommerce points you toward their Essentials plans.
Price: Request a quote Websites Supported: Multiple (via Multi-Storefront feature) Best For: Ecommerce success for mid-market and enterprise brands Other Features:
The Enterprise plan is tailored for large-scale operations that require maximum performance and flexibility. You benefit from highly specific features like comprehensive migration assistance and fully customizable checkout options. This plan ensures your operations run smoothly, offering robust security standards and dedicated customer success management.

Postscript pricing: Postscript offers tiered subscription plans starting at $0/month with a usage-based messaging model. Costs are driven by a monthly platform fee plus per-message rates for SMS and MMS communications.
Scales from new startups to large enterprise operations. Only available to Shopify stores.
No hidden fees. Contact sales for customized plans.

User reviews for BigCommerce show a sharp division in experience, reflected by the low Trustpilot score (1.4). While some users find the platform intuitive and highly customizable compared to standard competitors, the dominant sentiment focuses on major technical and support failures.
Recurring complaints highlight unexpected and significant unreliability issues, with multiple reports of severe, multi-hour server outages. Furthermore, customer service is frequently described as the "worst," often failing to solve problems or responding with indifference, even for Enterprise customers.
I am on the enterprise plan and the support is completely non-existent. This platform has simply been an absolute disaster, wasting both time and money for our business. I would strongly advise others to stay away from it.
Based on the available snippets, Trustpilot reviews for Postscript focus on antique furniture, not the SMS platform, indicating a brand name conflict. Capterra snippets were blocked, so no substantive reviews for the platform are accessible. 🤔 This limits our ability to synthesize external user sentiment. For this review, we're leaning heavily on the provided website content and our own analysis to form a balanced assessment.
The team is incredibly knowledgeable about SMS marketing. They helped us build a strategy that directly increased our sales. It's been a game-changer for our revenue.
This isn't a fair fight—it's a platform versus a plugin. For most people building an online store from scratch, BigCommerce is the clear winner. It's the complete package for selling online. BigCommerce's superpower is being a robust, reliable foundation. It boasts 99.99% uptime and features like unlimited API calls. You can manage multiple storefronts and avoid transaction fees as you scale. Postscript's superpower is dominating a single channel. It turns your SMS list into a 34x ROI machine using AI. It grows your list 3x faster and handles all the compliance headaches for you. The deciding factor is simple: Do you need a house or a power tool? BigCommerce builds the house. Postscript is the power tool you add to a Shopify house to make it work better. Choose BigCommerce if you need an all-in-one platform for a growing brand or B2B operation. Choose Postscript if you're already on Shopify and SMS marketing is your next big revenue driver. You likely won't be choosing between them, but rather deciding which role each needs to play.
No. Postscript is built exclusively for the Shopify platform. It has an SDK for custom builds but no standard connector for BigCommerce. You would need to use a different SMS tool.
For a new store, BigCommerce is the right choice. It provides the complete platform to build, manage, and sell. Postscript is an add-on for an existing store.
No. BigCommerce is a platform, not a specialized SMS tool. You can integrate third-party SMS services, but it doesn't offer comparable AI-powered features.
Their pricing models are incomparable. BigCommerce charges for platform access. Postscript charges based on how many texts you send and your list size.
BigCommerce offers 24/7 live support. Postscript support is available during business hours. The best choice depends on if you need round-the-clock platform help.
Yes. BigCommerce's Multi-Storefront feature lets you manage multiple sites from one backend. This is ideal for running separate brands or regional stores.
Both tools have their strengths. Choose based on your specific needs.