You built your SaaS with Cursor because you wanted AI that actually understands your codebase. The AI-first editor with deep context awareness lets you move faster on complex projects. Now you need email infrastructure that matches that sophistication without becoming another project to maintain.

Cursor excels at helping developers build production-quality software. The AI understands your entire codebase, suggests contextual completions, and handles refactoring intelligently. Your email platform should integrate cleanly with whatever stack you are building, whether that is Next.js, Python, Go, or anything else Cursor supports.

This guide covers 14 email marketing tools that work well for the kinds of SaaS products Cursor developers typically build. I focused on platforms with solid APIs, behavioral automation for product-led growth, and sensible pricing for indie projects. If you are using a different tool, check out our guides for Windsurf, Claude Code, or GitHub Copilot.

Quick Comparison

Tool	Best For	Price at 10k Subs	API Quality	Automation Depth
Sequenzy	SaaS with Stripe	$49/mo	Excellent	Advanced
Resend	React Email	$20/mo (volume)	Excellent	Basic
Postmark	Deliverability	$15/mo (volume)	Excellent	Basic
Customer.io	Complex flows	$100+/mo	Good	Advanced
SendGrid	Enterprise scale	$20-$90/mo	Good	Moderate
Mailgun	Developer control	$35/mo	Great	Basic
Loops	Simplicity	$79/mo	Great	Moderate
Userlist	B2B SaaS	$100+/mo	Good	Advanced
Drip	Custom events	$39/mo	Good	Advanced
Plunk	Open-source	Free-$10/mo	Good	Basic
AWS SES	Cost optimization	~$1/10k emails	Basic	None
Encharge	AI automation	$79+/mo	Good	Advanced
Intercom	Full customer stack	$74+/mo	Good	Advanced
ActiveCampaign	CRM combo	$29+/mo	Good	Advanced

1. Sequenzy

Price: Free (100 subscribers) / $49/mo at 10,000 subscribers. Transactional emails included at no extra cost.

Cursor users typically build sophisticated SaaS products, and Sequenzy was built for exactly that use case. The platform handles both transactional emails and marketing automation in one system. Password resets from your auth layer and onboarding sequences flow through the same infrastructure with one sender reputation.

The revenue attribution feature is particularly relevant for serious SaaS. Sequenzy shows exactly which emails drive MRR, not just opens and clicks. When you send a trial conversion sequence, you see how much revenue it generates. When you run a re-engagement campaign, you see the actual impact on retention. This data matters for optimizing your funnel.

The AI sequence generator creates complete automations from a single prompt. Describe your goal, and Sequenzy generates working email flows. For Cursor developers who want to move fast on email without becoming email experts, this accelerates setup significantly.

Native Stripe OAuth integration syncs MRR, LTV, plan changes, and payment status automatically. Segment by "Pro plan users," "customers who churned last month," or "users with LTV over $500" without writing custom code. The integration works both ways, so your emails can trigger based on Stripe events like failed payments or plan upgrades.

Where it falls short: No SMS messaging, no landing page builder, smaller integration ecosystem than legacy platforms. If you need multi-channel beyond email, pair with a push notification or SMS tool.

Best for: Serious SaaS builders who want Stripe-integrated email with revenue attribution. At $49/mo for 10k subscribers, it is 67% cheaper than Klaviyo and 51% cheaper than Customer.io. Advanced sequences with behavioral triggers, without enterprise complexity.

2. Resend

Price: Free (3,000 emails/month) / $20/mo for 50,000 emails

Resend offers the best developer experience in transactional email. For Cursor users who appreciate well-designed tools, Resend's API is a pleasure to work with. Clean endpoints, predictable behavior, excellent error messages.

The React Email library lets you build email templates using JSX. If your Cursor project uses React, you maintain consistent patterns between your app and email templates. This is genuinely useful for design systems.

Cursor's AI can help you write Resend integrations quickly. The API is well-documented, and the patterns are standard. A few lines of code handles password resets, confirmations, or any transactional message.

Where it falls short: Resend is not a marketing platform. No sequences, no behavioral triggers, no campaign management. If you need onboarding flows or trial conversion, you will need a second tool. See our Sequenzy vs Resend comparison.

Best for: Developers who need excellent transactional email and will pair it with a separate marketing tool.

3. Postmark

Price: From $15/mo for 10,000 emails

Postmark built its reputation on deliverability. For Cursor-built products where email must arrive reliably, especially authentication codes and payment notifications, Postmark is a strong choice.

The platform separates transactional and broadcast email into different streams, protecting critical messages. Emails arrive within seconds. The API is clean and well-documented.

Where it falls short: Marketing features are basic. Limited automation, basic segmentation. No free tier.

Best for: Products where transactional reliability is critical. Consider pairing with a marketing platform.

4. Customer.io

Price: From $100/mo for up to 5,000 profiles

Customer.io is the power tool for sophisticated behavioral automation. If your product has complex customer journeys with many branches and conditions, Customer.io handles it.

The visual workflow builder is genuinely powerful. Complex branching logic, A/B tests within workflows, multi-channel messaging across email, push, SMS, and in-app. The event API tracks what users do in your product and triggers messaging accordingly.

For Cursor-built products with dedicated marketing teams, Customer.io provides the sophistication needed for mature lifecycle marketing.

Where it falls short: Starting at $100/mo, significantly more expensive. Steep learning curve. Transactional email requires separate product.

Best for: Established SaaS with complex customer journeys and resources to manage sophisticated tooling.

5. SendGrid

Price: Free (100 emails/day) / $20-$90/mo at scale

SendGrid is the enterprise standard for email infrastructure. The platform handles massive volumes and offers dedicated IPs. If your Cursor project might scale significantly, SendGrid's infrastructure is proven.

Both transactional API and Marketing Campaigns are included. Documentation is comprehensive.

Where it falls short: Interface is cluttered. Marketing features lag behind specialized tools. No native Stripe integration.

Best for: Teams expecting high volume who need established infrastructure.

6. Mailgun

Price: From $35/mo

Mailgun focuses on developers who want control. 99.99% uptime SLA, detailed logs, flexible webhooks. For Cursor users who want to configure every detail, Mailgun provides that flexibility.

Where it falls short: Less polished DX than Resend. Marketing automation is basic.

Best for: Technical teams wanting detailed control over infrastructure.

7. Loops

Price: Free (1,000 contacts) / $79/mo at 10,000 subscribers

Loops is the modern, minimal approach. Clean interface, focused features, fast setup. Combines transactional and marketing in one platform.

For Cursor developers who want something running quickly without enterprise overhead, Loops delivers.

Where it falls short: Automation is basic compared to Customer.io or Sequenzy. At $79/mo for 10k, costs more than Sequenzy.

Best for: Founders prioritizing simplicity over sophisticated features.

8. Userlist

Price: From $100/mo

Userlist is built specifically for B2B SaaS with company-level tracking. Unlike tools that only track individuals, Userlist understands that in B2B, companies are your real customers.

If your Cursor-built product sells to businesses, Userlist's company tracking matters. Segment by company MRR, team size, or activity level.

Where it falls short: Expensive. B2B-specific features are wasted if you are selling to individuals.

Best for: B2B SaaS products selling to companies, not individual users.

9. Drip

Price: From $39/mo

Drip offers solid event-based automation with revenue tracking. The custom events API lets you trigger automations based on product behavior.

Originally e-commerce focused, Drip works for SaaS needing event-based flows.

Where it falls short: E-commerce heritage shows. Not as SaaS-focused as purpose-built tools.

Best for: Products needing solid event-based automation at reasonable cost.

10. Plunk

Price: Free (3,000 emails/month) / ~$10/mo for more

Plunk is open-source transactional email. Self-hostable or use managed version. At roughly $0.001 per email, it is among the cheapest.

Where it falls short: Fewer features. Smaller platform.

Best for: Bootstrapped developers minimizing costs.

11. AWS SES

Price: $0.10 per 1,000 emails

AWS SES is raw infrastructure for cost optimization. At $0.10 per thousand, it is the cheapest option if you have AWS expertise.

Where it falls short: No marketing features. No automation. You manage everything yourself.

Best for: Teams with AWS expertise optimizing costs.

12. Encharge

Price: From $79/mo

Encharge offers AI-powered behavioral automation for SaaS. Tracks user behavior, segments by product usage, triggers based on actions.

Where it falls short: Not the cheapest. Learning curve exists.

Best for: SaaS wanting sophisticated behavioral automation.

13. Intercom

Price: From $74/mo

Intercom combines email, live chat, help desk, and product tours. If you want one platform for all customer communication, Intercom consolidates it.

Where it falls short: Expensive. Email features are not as deep as dedicated platforms.

Best for: Teams wanting unified customer communication stack.

14. ActiveCampaign

Price: From $29/mo for 1,000 contacts

ActiveCampaign combines email marketing with CRM. If your Cursor-built product has a sales-assisted motion, having CRM and email together is valuable.

Where it falls short: Not SaaS-specific. Transactional email is an add-on.

Best for: SaaS with sales teams needing integrated CRM.

How to Choose

If you need production-grade automation

Sequenzy or Customer.io for behavioral triggers with revenue attribution. You need emails responding to what users do, with clear ROI measurement.

If you need transactional immediately

Postmark or Resend for deliverability. Sequenzy if you want marketing included.

If you are building B2B

Userlist for company-level tracking. Sequenzy for Stripe-integrated automation.

If budget is tight

Plunk is open-source. AWS SES is cheapest with expertise.

Integration Patterns for Cursor Projects

REST API calls

Every email platform works via REST API. Cursor's AI can help you write integration code in any language. Standard patterns apply.

Event tracking

Track product events and send them to your email platform. User completed onboarding, hit usage limit, went inactive. Trigger appropriate sequences.

Stripe webhooks

Payment events trigger email actions. Failed charges start dunning sequences. Successful upgrades trigger welcome-to-Pro emails. Sequenzy handles this natively.

The Bottom Line

For serious Cursor-built SaaS, Sequenzy offers the right balance: sophisticated behavioral automation, native Stripe integration, revenue attribution, and reasonable pricing at $49/mo for 10k subscribers.

If you need enterprise-grade complexity, Customer.io has more power at higher cost. For pure transactional, Resend or Postmark excel. For B2B with company tracking, consider Userlist.

Pick based on your actual needs. Cursor helps you build sophisticated products. Your email platform should match that sophistication without becoming a project itself.

Using a different code editor? Check our guides for Windsurf, Claude Code, or GitHub Copilot.