NEWJoin 2M+ software buyers|Get Weekly Insights, Trends & Expert PicksSubscribe free →

Last updated:

12 Best CartStack Alternatives in 2026, Free Options Included

Explore 12 alternatives to CartStack, vetted by our editors with real user reviews, pricing, and feature comparisons.

The top free CartStack alternatives, at a glance

Quick answer

Want the short version? The top CartStack alternatives are ConvertKit, Salesforce Email Studio and VerticalResponse. ConvertKit leads with a SpotScore of 9 and a 4.1★ rating. See the full comparison of all 12 on score, rating, and price below.

Outgrown CartStack, or never quite settled in? These 12 email marketing software free alternatives are the strongest alternatives, ranked by SpotScore, which fuses verified user satisfaction with market presence, plus star ratings and pricing. We vet each one. The table below sums them up; the sections after go deeper.

ProductSpotScoreRatingPricingBest for
ConvertKitStreamline your marketing with powerful email and landing pages.9★★★★☆ 4.1FreeFree Trial · Freemium · Subscription · Quotation Basedteams of all sizes
Salesforce Email StudioBoost engagement with personalized emails.8.9★★★★☆ 4.18(210)FreeFree Trial · Quotation Basedteams of all sizes
VerticalResponseElevate your marketing with VerticalResponse.8.7★★★★☆ 3.6FreeFree Trial · Freemium · Subscriptionsmall & mid-size businesses
RetainfulRevolutionize your eCommerce game with Retainful.8.3★★★★★ 5(2)Freefrom $19/moteams of all sizes
OmevoStreamline your email marketing efforts with Omevo.7.9★★★★★ 4.9FreeFree Trial · One-time licenseteams of all sizes
MoosendBoost your business with Moosend's email marketing solution.8.8★★★★☆ 4.3FreeFreemium · Subscription · Quotation Basedteams of all sizes
EmailOctopusEffortlessly connect with customers through email marketing.8.6Not yet ratedFreeFreemium · Subscription · Quotation Basedteams of all sizes
GetResponseStreamline your email marketing and see results.9.8★★★★☆ 3.98(1543)FreeFree Trial · Freemium · Subscription · Quotation Basedteams of all sizes
ActiveCampaignStreamline your marketing efforts and see results.9.8★★★★★ 4.66(1887)FreeFree Trial · Subscription · Quotation Basedteams of all sizes
Constant ContactUnleash the power of targeted email marketing.9.6Not yet ratedFreeFree Trial · Subscriptionteams of all sizes
PipedriveStreamline your sales process and close more deals.9.6★★★★★ 4.67(3388)FreeFree Trial · Subscriptionteams of all sizes
MailChimpConnecting businesses with their customers, effortlessly.9.5Not yet ratedFreeFreemium · Subscriptionteams of all sizes

9.0

SpotScore

ConvertKit

ConvertKit

Streamline your marketing with powerful email and landing pages.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.1

Add to compare

What is ConvertKit?

ConvertKit is an email marketing and audience-building platform built for independent creators, bloggers, course sellers, and newsletter writers who monetize an online audience. It combines email automation, subscriber tagging, landing pages, and opt-in forms so creators can segment and nurture ...

Read more about ConvertKit
Free TrialTry Free →·

ConvertKit offers custom pricing plan

8.9

SpotScore

Salesforce Email Studio - Email Marketing Software

Salesforce Email Studio

Boost engagement with personalized emails.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is Salesforce Email Studio?

Salesforce Email Studio makes it easy for you to create, send and measure engagement with personalized, targeted emails. With drag-and-drop design, simple editing commands, and links to your CRM to access lists of contacts, Salesforce Email Studio is an email marketing tool that lets you focus ...

Read more about Salesforce Email Studio
Free Trial·

Salesforce Email Studio offers custom pricing plan

8.7

SpotScore

VerticalResponse

VerticalResponse

Elevate your marketing with VerticalResponse.

Best for: SMB teams · Mid-market

Start Free Trial

3.6

Add to compare

What is VerticalResponse?

VerticalResponse offers easy-to-use email marketing software that helps you create, send and track email marketing campaigns that turn your customers into loyal repeat customers. VerticalResponse® lets you create professionally designed emails with our easy to use drag-and-drop editor in just ...

Read more about VerticalResponse
Free TrialTry Free →

8.3

SpotScore

Retainful - Email Marketing Software

Retainful

Revolutionize your eCommerce game with Retainful.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is Retainful?

Welcome to Retainful: an eCommerce tool designed to help online stores succeed since 2018. Our automated email marketing solutions enable store owners to recover abandoned carts, reduce customer attrition and grow repeat sales. With us, merchants can craft emails in minutes; to include cart ...

Read more about Retainful
Free TrialTry Free →

Spotsaas Ads

Want your product up here? Put it in front of buyers the moment they're comparing your category.

Reach in-market buyersRank above rivals2M+ buyers a year

7.9

SpotScore

Omevo

Omevo

Streamline your email marketing efforts with Omevo.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.9

Add to compare

What is Omevo?

Omevo is a bulk personalized email platform for marketing teams and digital agencies that need to send high-volume campaigns quickly while pulling contact data from multiple sources. It integrates with popular marketing tools, social platforms, and databases to keep audience data synchronized. ...

Read more about Omevo
Free Trial

8.8

SpotScore

Moosend

Moosend

RECOMMENDED

Boost your business with Moosend's email marketing solution.

Best for: SMB teams · Mid-market · Enterprise

4.3

Add to compare

What is Moosend?

Moosend is a powerful Email Marketing Software for small businesses that's easy to use and affordable, with a robust feature set. With its user-friendly interface and newbie-friendly training, Moosend makes it easy to create and send professional email campaigns so you can reach out to new ...

Read more about Moosend

Moosend offers custom pricing plan

8.6

SpotScore

EmailOctopus

EmailOctopus

Recommended

Effortlessly connect with customers through email marketing.

Best for: SMB teams · Mid-market · Enterprise

Add to compare

What is EmailOctopus?

EmailOctopus is an affordable email marketing platform for small businesses and independent operators who want straightforward list management, A/B testing, and campaign sending without paying premium rates. It integrates with Stripe and PayPal for ecommerce-adjacent use cases and offers a ...

Read more about EmailOctopus

EmailOctopus offers custom pricing plan

9.8

SpotScore

GetResponse - Email Marketing Software

GetResponse

Streamline your email marketing and see results.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is GetResponse?

GetResponse is an online email response software that allows small businesses to create, track and send professional emails within a few clicks. With features like automatic drag-and-drop picture insertion, draft saving, ultra-fast click activation, HTML support, responsive design and more, ...

Read more about GetResponse
Free TrialTry Free →·

Starts from $15.58/Month when Billed Yearly, also offers free forever plan

9.8

SpotScore

ActiveCampaign - Marketing Automation Software

ActiveCampaign

Streamline your marketing efforts and see results.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is ActiveCampaign?

ActiveCampaign is the most powerful marketing automation tool designed to help you nail your next digital campaign. From nurture campaigns that convert new subscribers into long-term customers, to smart lead scoring that turns warm prospects into paying customers. It is the complete marketing ...

Read more about ActiveCampaign
Free Trial·

Starts from $15/Month when billed annually, ~1,000 contacts ($19/mo billed monthly)

9.6

SpotScore

Constant Contact

Constant Contact

Unleash the power of targeted email marketing.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

watch-demo

Watch Demo

What is Constant Contact?

Constant Contact is a comprehensive email marketing platform that helps small businesses manage email marketing and social media promotions. With time-saving tools to help you find your customers and easily communicate with them, Constant Contact streamlines the way you communicate with your ...

Read more about Constant Contact
Free TrialTry Free →

9.6

SpotScore

Pipedrive - CRM Software

Pipedrive

Streamline your sales process and close more deals.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

watch-demo

Watch Demo

What is Pipedrive?

Pipedrive is a user-friendly customer relationship management (CRM) software designed to help sales teams streamline their pipelines, manage leads efficiently, and close deals faster. Ideal for small to mid-sized businesses, agencies, and sales professionals, it offers intuitive tools for lead ...

Read more about Pipedrive
Free TrialTry Free →·

Starts from $14/user/month when monthly

9.5

SpotScore

MailChimp

MailChimp

Connecting businesses with their customers, effortlessly.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

Add to compare

watch-demo

Watch Demo

What is MailChimp?

MailChimp is a powerful marketing automation platform that helps thousands of businesses connect with their customers. From one-to-one email correspondence to mass email marketing, software is the easiest way for companies of all sizes to introduce themselves, send professional-looking emails, ...

Read more about MailChimp

Starts from $4.23/month when monthly, also offers free forever plan

CartStack vs its closest competitors

CartStack competes with 12 other email marketing software tools tracked on Spotsaas. The closest by feature overlap are ConvertKit, Salesforce Email Studio and VerticalResponse. Each is compared against CartStack on rating, pricing and feature coverage below.

Sites and apps like CartStack

Searches for "sites like CartStack" and "apps like CartStack" land on the same set of options as "CartStack alternatives" — the 12 options below cover both, whether you want a like-for-like replacement or something lighter.

What earned each CartStack alternative its spot

ConvertKit9Best for teams of all sizes

User-friendly landing page integration

Watch for: Higher pricing tiers

Salesforce Email Studio8.9Best for teams of all sizes

Automates email and marketing campaigns, reducing time spent on repetitive tasks.

Watch for: High pricing puts the platform out of reach for many small and mid-sized businesses.

VerticalResponse8.7Best for small & mid-size businesses

Drag-and-drop email editor

Watch for: Limited automation features

Retainful8.3Best for teams of all sizes

Automated email marketing

Watch for: Limited to eCommerce

Omevo7.9Best for teams of all sizes

Bulk email sending

Watch for: Limited analytics capabilities

Moosend8.8Best for teams of all sizes

Affordable pricing

Watch for: Limited advanced features

EmailOctopus8.6Best for teams of all sizes

User-friendly interface

Watch for: Limited advanced features

GetResponse9.8Best for teams of all sizes

Outstanding customer support with prompt and professional assistance during onboarding and troubleshooting.

Watch for: Inconsistent email deliverability, particularly to Gmail domains, often requiring technical setups like DKIM/DMARC.

ActiveCampaign9.8Best for teams of all sizes

Customer support is responsive, knowledgeable, and often goes beyond standard troubleshooting.

Watch for: New users face a learning curve that requires time to understand the platform's full feature set.

Constant Contact9.6Best for teams of all sizes

Marketing tools

Watch for: Limited customization options

Pipedrive9.6Best for teams of all sizes

Offers a cost-effective alternative to Salesforce, making it budget-friendly for smaller teams and businesses.

Watch for: Some users find the system complex initially, requiring proper guidance and support for efficient use.

MailChimp9.5Best for teams of all sizes

Strong inbox deliverability fundamentals and list compliance features help maintain high send reputation.

Watch for: While solid for campaign performance, its analytics lack the depth of standalone reporting or advanced BI dashboards.

Why teams look for a CartStack alternative

A few recurring complaints tend to drive the move off CartStack:

  • Limited features for non-eCommerce
  • Basic reporting tools
  • Higher pricing tiers
  • Fewer integrations

Key things to look for in a CartStack alternative

Stacked against each other, the 12 free alternatives compare this way: 12 offer a free tier; paid plans run $19, with Retainful the cheapest entry point; and Retainful is the highest rated at 5★ across 2 reviews.

How we rank, in short.

Frequently Asked Questions (FAQs)

Stuck on something? We're here to help with all the questions and answers in one place.

The top-rated alternatives to CartStack are Retainful (5.0★), Omevo (4.9★), Pipedrive (4.7★). Compare all 12 alternatives side-by-side above.

When evaluating alternatives to CartStack, prioritize: Contact Management, Auto-Responders, Click-through Tracking, Drip Campaigns, Event Triggered Email, transparent pricing, free trial availability, and integrations with your existing tools. Use the filters above to compare by feature, budget, and team size.

Migration difficulty depends on how deeply CartStack is integrated into your workflows. Most alternatives offer data export/import tools and dedicated onboarding support. We recommend narrowing to 2–3 options, running a free trial, and checking each vendor's migration guides before committing.

How to narrow down your CartStack alternative

  • On a budget / just exploring: start with a free tier — ConvertKit, Salesforce Email Studio and VerticalResponse let you evaluate without paying upfront.
  • If real-user ratings matter most: Retainful has the strongest star rating (5★) among the options with verified reviews.
  • Want the safest pick: ConvertKit has the highest Spotsaas Score (9) in this list — a strong default if you're unsure.

Before you switch from CartStack

To replace CartStack smoothly, treat data first. Export it, confirm the new tool can import it, and check feature parity for the work you actually do. Pilot on a free tier before rolling out, and keep CartStack running until everything has moved over cleanly.

Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].