Bolts extend what CartOS can do—adding features like reviews, subscriptions, loyalty programs, and integrations with other services. With dozens of options in the Bolt Store, choosing the right ones for your business takes some thought. This guide helps you evaluate bolts and build a stack that serves your needs without bloat.
The bolt philosophy
CartOS is designed to work well out of the box for most stores. Bolts add functionality for specific needs rather than being required for basic operation. This means you should add bolts intentionally, not speculatively.
Every bolt you install:
- Adds complexity to your store
- May impact performance (however slightly)
- Requires some level of setup and maintenance
- Might cost money (either upfront or monthly)
The goal isn't to install every cool-sounding bolt—it's to install the bolts that solve real problems or create real value for your specific business.
Start with your needs
Before browsing the Bolt Store, identify what you're trying to accomplish:
Problems to solve
- What's frustrating about running your store right now?
- What manual processes take too much time?
- What are customers asking for that you can't deliver?
- Where are you losing sales?
Opportunities to pursue
- What would increase average order value?
- How could you bring customers back more often?
- What marketing channels aren't you using?
- What business model changes would you like to try?
Write down your top 3-5 priorities. Then look for bolts that address those specific needs.
Categories of bolts
Core CartOS bolts
Built and maintained by CartOS. These integrate deeply with the platform and are guaranteed to work well together. They include:
- Automation Bolt – Email marketing, workflows, customer journeys
- Fulfillment Bolt – Shipping labels, carrier integration, tracking
- Reviews Bolt – Product reviews and ratings
- Wishlists Bolt – Customer wishlists and save-for-later
- Subscriptions Bolt – Recurring orders and subscription products
- Loyalty Bolt – Points, rewards, referral programs
- Gift Cards Bolt – Sell and redeem gift cards
- Shipping Protection Bolt – Package protection for customers
- Stock Genius Bolt – Multi-channel selling and inventory sync
Core bolts are typically included with your subscription or available at modest additional cost.
Third-party bolts
Built by independent developers and companies. Quality and pricing vary. These often provide:
- Integrations with external services (accounting, CRM, marketing platforms)
- Specialized features for niche use cases
- Alternative approaches to what core bolts offer
By function
Marketing and sales
- Email and SMS marketing
- Pop-ups and lead capture
- Abandoned cart recovery
- Upsells and cross-sells
- Social proof and urgency
- Affiliate and referral programs
Customer experience
- Reviews and ratings
- Wishlists
- Live chat and messaging
- Size guides and product customization
- FAQ and help desk
Operations
- Shipping and fulfillment
- Inventory management
- Multi-channel selling
- Dropshipping
- Print on demand
Integrations
- Accounting (QuickBooks, Xero)
- CRM (Salesforce, HubSpot)
- Marketing platforms (Klaviyo, Mailchimp)
- Analytics (Google Analytics, segments)
- ERP and warehouse systems
Monetization
- Subscriptions
- Pre-orders and backorders
- Deposits and layaway
- Wholesale and B2B pricing
- Digital products and downloads
Evaluating bolts
Check the basics
Does it solve your problem?
Read the description carefully. Make sure the bolt does what you need—not just something similar. "Product reviews" and "photo reviews with social sharing" might both be review bolts but serve different needs.
Who made it?
CartOS bolts are maintained by us. Third-party bolts vary—look at the developer's reputation, other bolts they've made, and how long they've been in the ecosystem.
What's the pricing?
- Free – No cost (but may have premium tiers)
- One-time purchase – Pay once, use forever
- Monthly subscription – Ongoing cost
- Usage-based – Pay based on volume (emails sent, orders processed, etc.)
Factor in long-term costs. A $29/month bolt costs $348/year—worth it if it adds value, wasteful if you barely use it.
Check reviews and ratings
The Bolt Store shows ratings and reviews from other merchants. Look for:
- Overall rating – 4+ stars is generally good
- Number of reviews – More reviews means more data points
- Recent reviews – Old positive reviews don't tell you about current quality
- Response to negative reviews – Does the developer engage constructively?
Read the negative reviews specifically. Are the complaints about bugs, support, or missing features? Do those concerns apply to your use case?
Check compatibility
Theme compatibility
Some bolts modify your storefront. Check that the bolt works with your theme, especially for visual features like reviews, wishlists, or pop-ups.
Bolt compatibility
Most bolts work fine together, but some overlap or conflict. Two review systems would be redundant; two pop-up systems might fight for the same screen space.
Plan compatibility
Some bolts require certain CartOS plan tiers. Check requirements before committing.
Check support
What happens when something goes wrong?
- Does the bolt have documentation?
- Is there a support channel (email, chat, forum)?
- What are support hours and response times?
- Is support included or extra?
For critical functionality, good support matters more than saving a few dollars.
Try before you commit
Free trials
Many paid bolts offer free trials. Use them. Install the bolt, configure it properly, and test thoroughly before paying. Don't just install and forget—actually evaluate whether it meets your needs.
Free tiers
Some bolts offer limited free versions. These let you test core functionality before upgrading. Useful for validating fit, but make sure the paid features you need actually work as expected.
Refund policies
Check refund policies for paid bolts. Some offer money-back guarantees if you're not satisfied within a certain period.
Installation considerations
Test in a duplicate theme
For bolts that modify your storefront, install and test on a duplicate of your theme before applying to your live site. This prevents surprises.
One at a time
Install bolts one at a time, not all at once. This way, if something breaks, you know what caused it. It also helps you properly learn and configure each bolt.
Read the setup instructions
Bolts often require configuration beyond just clicking "Install." Read the documentation, follow setup steps, and configure settings thoughtfully. A poorly configured bolt might not work—or worse, might hurt your store.
Common bolt decisions
Reviews: Core bolt vs. third-party
The CartOS Reviews Bolt handles basic product reviews well and integrates seamlessly. Third-party review platforms (like Judge.me, Stamped, or Yotpo) offer additional features: photo/video reviews, social proof widgets, review request emails, Q&A, and review syndication to Google.
Choose CartOS Reviews if: You want simple, integrated reviews without extra cost.
Choose a third-party if: Photo reviews, Google integration, or advanced review marketing are important to you.
Email marketing: Automation Bolt vs. external
The Automation Bolt handles email marketing, transactional emails, and customer journeys. External platforms like Klaviyo, Mailchimp, or Omnisend offer more advanced segmentation, templates, and analytics.
Choose Automation Bolt if: Your email needs are straightforward—welcome series, abandoned cart, basic campaigns.
Choose external if: Email is a major revenue driver and you need advanced segmentation, A/B testing, or specific platform features.
Loyalty: Build or buy?
The Loyalty Bolt provides points, rewards, and referrals. Third-party loyalty platforms may offer more gamification, VIP tiers, or integrations.
Choose Loyalty Bolt if: You want a straightforward points program that's easy to manage.
Choose third-party if: You need complex tier structures, specific integrations, or your loyalty program is a major differentiator.
Subscriptions
If you sell subscription products (recurring deliveries, memberships, subscription boxes), you need the Subscriptions Bolt or a third-party subscription platform. This is generally essential—not a nice-to-have—for subscription businesses.
Avoiding bolt bloat
Audit regularly
Review your installed bolts quarterly. For each one:
- Are you actively using it?
- Is it providing value relative to its cost?
- Could you achieve the same result differently?
Uninstall bolts you're not using. They add complexity even when inactive.
Consolidate where possible
Before adding a new bolt, check if an existing one does what you need. The Automation Bolt, for example, handles email marketing, so you might not need a separate email pop-up bolt.
Resist shiny object syndrome
Not every feature is worth adding. A bolt might sound cool, but if it doesn't address a real need or measurably improve your business, skip it. You can always add it later.
Consider performance
Each bolt adds some load to your store. Most are well-optimized, but many bolts together—especially those adding frontend scripts—can impact page speed. Prioritize bolts that add real value.
Essential vs. nice-to-have
Often essential
- Email marketing – Some form of email automation (Automation Bolt or external)
- Shipping labels – If you fulfill yourself, the Fulfillment Bolt saves significant time
- Subscriptions – If you sell subscriptions, obviously essential
- Multi-channel – If you sell on Amazon/eBay/etc., inventory sync is critical
High value for many stores
- Reviews – Social proof helps conversions
- Abandoned cart recovery – Recovers otherwise lost sales
- Wishlists – Increases engagement and return visits
Valuable for specific situations
- Loyalty programs – If repeat purchases are key to your model
- Gift cards – If gift-giving is part of your market
- B2B/wholesale – If you sell to businesses
- Pre-orders – If you launch products before availability
Often unnecessary
- Urgency timers and fake scarcity (can feel manipulative)
- Multiple overlapping bolts solving the same problem
- Advanced features you'll "eventually" use but never configure
- Bolts solving problems you don't have
Getting recommendations
From the Bolt Store
The Bolt Store features collections like "Most Popular," "New This Month," and category-specific recommendations. Staff picks highlight quality bolts we think are worth considering.
From CartOS support
If you describe what you're trying to accomplish, our support team can suggest relevant bolts. We know the ecosystem and can point you toward good solutions.
From the community
The CartOS community forums and social groups are good places to ask what bolts other merchants in your industry use and recommend.
From partners
If you work with a CartOS partner, they can recommend bolts based on their experience with similar stores.