Mailchimp vs Square

Mailchimp or Square? How to Pick the Right Fit for Your Team

Stop researching and start deciding. Our feature-by-feature comparison of Mailchimp and Square gives mid-market Australian businesses the clarity they need - in minutes, not hours.

Features compared

50+

Clients advised

98%

Client retention

12+

Years experience

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Feature Comparison

Side-by-side feature analysis for Mailchimp and Square.

Contact management

Mailchimp

Generous free plan supports up to 500 contacts with email campaigns, landing pages, and basic automations - a genuine starting point for small businesses

Square

Limitation: Advanced inventory management is limited - businesses with complex stock, variants, or multi-warehouse needs will outgrow Square quickly

Mailchimp highlights contact management as a core strength. Square offers the capability but does not position it as a primary differentiator.

Pipeline management

Mailchimp

Mailchimp provides pipeline management functionality, popular with Retail & E-commerce businesses

Square

Limitation: Advanced inventory management is limited - businesses with complex stock, variants, or multi-warehouse needs will outgrow Square quickly

pipeline management support varies across Mailchimp and Square's plan tiers. Check whether the capabilities you need are on the plan you can actually afford.

Email automation

Mailchimp

Generous free plan supports up to 500 contacts with email campaigns, landing pages, and basic automations - a genuine starting point for small businesses

Square

Square supports email automation. Advanced automation features may require higher-tier plans

Mailchimp highlights email automation as a core strength. Square offers the capability but does not position it as a primary differentiator.

Reporting and analytics

Mailchimp

Mailchimp includes reporting and analytics capabilities. Feature depth varies by plan tier

Square

Square Dashboard provides real-time sales, inventory, and team analytics accessible from any device, giving owners visibility on the go

Square highlights reporting and analytics as a core strength. Mailchimp offers the capability but does not position it as a primary differentiator.

Integration ecosystem

Mailchimp

Strong e-commerce integrations with Shopify, WooCommerce, and BigCommerce sync purchase data automatically for targeted marketing

Square

Unified platform covering POS, online payments, invoicing, payroll, and banking creates a genuine all-in-one commerce ecosystem

Both platforms are strong here. Mailchimp emphasises this as a core strength, and Square also invests heavily in integration ecosystem. Review each platform's approach to see which aligns with your team's workflow.

Mobile app

Mailchimp

Mailchimp connects with 80+ tools natively, offering one of the broadest integration ecosystems in its category

Square

Square connects with 54+ tools natively, offering one of the broadest integration ecosystems in its category

mobile app capabilities vary by plan tier on both platforms. Confirm the specific features you need are available at your target price point before committing.

Transaction fees

Mailchimp

Mailchimp provides transaction fees functionality, popular with Retail & E-commerce businesses

Square

Flat-rate pricing with no monthly fees on the basic plan makes costs predictable and easy for small businesses to understand

Square highlights transaction fees as a core strength. Mailchimp offers the capability but does not position it as a primary differentiator.

Payment methods supported

Mailchimp

Mailchimp offers payment methods supported capabilities. Support depth and SLA commitments vary by plan

Square

Free POS hardware and software to start means businesses can begin accepting in-person payments with zero upfront investment

Square highlights payment methods supported as a core strength. Mailchimp offers the capability but does not position it as a primary differentiator.

Recurring billing

Mailchimp

Mailchimp provides recurring billing functionality, popular with Retail & E-commerce businesses

Square

Square provides recurring billing functionality, popular with Retail & E-commerce businesses

On paper recurring billing looks similar across Mailchimp and Square, but the admin experience, reporting, and permission model tend to be the real differentiators.

International payments

Mailchimp

Mailchimp provides international payments functionality, popular with Retail & E-commerce businesses

Square

Free POS hardware and software to start means businesses can begin accepting in-person payments with zero upfront investment

Square highlights international payments as a core strength. Mailchimp offers the capability but does not position it as a primary differentiator.

Fraud protection

Mailchimp

Mailchimp provides fraud protection functionality, popular with Retail & E-commerce businesses

Square

Square provides fraud protection functionality, popular with Retail & E-commerce businesses

If fraud protection is a daily-use area for your team, the onboarding curve and keyboard ergonomics matter more than feature counts - trial both with a real operator, not an evaluator.

Developer tools and API

Mailchimp

Mailchimp offers a REST API. REST API v3.0 with API key or OAuth 2.0 authentication. Rate limited to 10 simultaneous connections. Supports pagination via offset and count. JSON responses. Webhook support via webhooks endpoint for list and campaign events.

Square

Built-in loyalty programme, gift cards, and marketing tools are included or low-cost add-ons that larger competitors charge significantly more for

Square highlights developer tools and api as a core strength. Mailchimp offers the capability but does not position it as a primary differentiator.

Pricing Comparison

General pricing information for each platform.

Mailchimp

Free plan for up to 500 contacts. Essentials from approximately $16/month, Standard from approximately $25/month, Premium from approximately $420/month (AUD). Pricing scales with number of contacts. Pay-as-you-go option available.

These figures are estimates based on publicly available pricing. Actual costs depend on your usage, team size, and any negotiated rates.

Square

Free POS plan available. Square Reader hardware is free (first device). In-person payments: 1.6% per tap/insert. Online payments: 2.2% per transaction. Invoices: 1.6% per transaction. Square Plus for Retail from approximately $60/month (AUD).

Pricing is indicative only and subject to change. We recommend contacting the vendor for a tailored quote based on your Australian business needs.

Pros & Cons

An honest look at the strengths and limitations of each platform.

Mailchimp

Pros

Generous free plan supports up to 500 contacts with email campaigns, landing pages, and basic automations - a genuine starting point for small businesses
Drag-and-drop email builder is beginner-friendly with 100+ templates that look professional without design skills
Audience segmentation with purchase behaviour, engagement scoring, and predicted demographics helps target campaigns effectively
Content Studio pulls in social media content and product photos for easy reuse across campaigns and landing pages
Strong e-commerce integrations with Shopify, WooCommerce, and BigCommerce sync purchase data automatically for targeted marketing

Cons

Pricing has increased substantially since the Intuit acquisition, with the free plan now capped at 500 contacts (down from 2,000)
Automation capabilities are basic compared to ActiveCampaign or HubSpot - complex multi-step workflows require the Premium plan
A/B testing is limited to subject lines on lower plans - full content testing requires Standard or above
The platform tries to be an all-in-one marketing tool, but the website builder, social posting, and CRM features feel bolted on rather than integrated

Square

Pros

Free POS hardware and software to start means businesses can begin accepting in-person payments with zero upfront investment
Unified platform covering POS, online payments, invoicing, payroll, and banking creates a genuine all-in-one commerce ecosystem
Flat-rate pricing with no monthly fees on the basic plan makes costs predictable and easy for small businesses to understand
Square Dashboard provides real-time sales, inventory, and team analytics accessible from any device, giving owners visibility on the go
Built-in loyalty programme, gift cards, and marketing tools are included or low-cost add-ons that larger competitors charge significantly more for

Cons

Transaction fees of 1.6% per tap/insert are competitive but can add up for high-volume businesses compared to negotiated merchant rates
Advanced inventory management is limited - businesses with complex stock, variants, or multi-warehouse needs will outgrow Square quickly
Account holds and fund freezes have been reported, particularly for new accounts or businesses with high transaction volumes or unusual patterns
Customisation of the POS experience and receipts is limited compared to dedicated POS systems like Lightspeed or Vend

Best For

Which tool suits which use case.

Choose Mailchimp if you need

✓ Complex data models (contacts, lists, campaigns and more)
✓ Marketing automation
✓ Contact management
✓ Hospitality & Tourism organisations
✓ Teams needing extensive third-party integrations

Choose Square if you need

✓ Recurring billing
✓ Teams needing extensive third-party integrations
✓ Transaction management
✓ Complex data models (payments, orders, customers and more)
✓ Real-time data sync across platforms

Expert Verdict

Our Harvard-educated consultants' take on this comparison.

Clever Ops Recommendation

Mailchimp and Square solve different problems: Mailchimp handles crm & sales, while Square covers payments. Most mid-market Australian businesses benefit from running both with a proper integration layer. Mailchimp is the right pick when small businesses and sole traders who need straightforward email marketing with decent templates and segmentation, especially those selling online through Shopify or WooCommerce. Square fits when small to mid-market retail, hospitality, and service businesses that need an affordable, easy-to-use POS system with integrated online selling and payment processing. Clever Ops can design the integration architecture and implement both, typically within 4-8 weeks.

Migration Notes

What to know about switching between Mailchimp and Square.

Migrating Between Mailchimp and Square

Both Mailchimp and Square offer REST APIs, which simplifies the migration process. Clever Ops builds custom migration scripts that extract data from one platform and import it into the other with full field mapping. We validate every record, run parallel systems during the switch, and provide 3 months of post-migration support.

Mailchimp vs Square FAQ

Yes, both platforms are used by Australian businesses. Mailchimp is popular with Retail & E-commerce and Hospitality & Tourism in Australia. Square is widely used by Retail & E-commerce and Hospitality & Tourism. Key Australian considerations include AUD pricing, local support hours, GST handling, and data residency. Mailchimp offers Australian-specific pricing. Clever Ops, based in Gippsland, Victoria, factors these nuances into every recommendation.

Mailchimp may hit limits when businesses that need advanced marketing automation workflows, or growing teams whose contact lists will quickly push them into expensive pricing tiers where alternatives offer better value. Square may hit limits when businesses with complex inventory management needs, high-volume operations seeking negotiated transaction rates, or companies needing deeply customisable POS workflows. Both platforms are designed to grow with your business, but scaling experience varies. Mailchimp connects with 80+ tools, and Square with 54+, so integration flexibility at scale is comparable. Clever Ops helps mid-market Australian businesses plan their tech stack for growth, not just for today.

Both platforms have their own setup considerations. Mailchimp manages 8 data object types and Square manages 8, so configuration complexity scales with your data requirements. Clever Ops provides implementation support for both, typically completing setup within 2 weeks.

Yes. Mailchimp provides a REST API and Square provides a REST + Webhook API, so automations can be built via Zapier, Make, or custom integrations. Common automated workflows include syncing shared data objects between both platforms. Clever Ops builds these automations for mid-market Australian businesses, saving teams 8+ hours/week on average.

Since Mailchimp (crm & sales) and Square (payments) serve different functions, many businesses run both. The key is connecting them so data flows automatically. Clever Ops builds these integrations, keeping your core records in sync across both platforms.

Mailchimp uses a REST API (REST API v3.0 with API key or OAuth 2.0 authentication. Rate limited to 10 simultaneous connections. Supports pagination via offset and count. JSON responses. Webhook support via webhooks endpoint for list and campaign events.), while Square uses a REST + Webhook API. Mailchimp supports 8 core data objects; Square supports 8. Square supports webhooks for real-time sync. With 12+ of integration experience, Clever Ops can tell you exactly how each API performs in production.

Yes. Both platforms share several common data object types (including contacts and core records), which simplifies field mapping. Clever Ops runs a structured migration process: discovery, data mapping, test migration, verification, and cutover. Most migrations complete within 4-8 weeks, with 3 months of post-migration support included.

Both Mailchimp and Square provide standard security measures including encryption, access controls, and compliance certifications. Mailchimp uses a REST API and Square uses REST + Webhook, both supporting secure data transfer. For Australian businesses handling sensitive data under the Privacy Act, data residency and local support are worth verifying with each vendor. Clever Ops, based in Gippsland, Victoria, can review each platform's security posture against your compliance requirements during a free assessment.