You built your app with Tempo Labs because you wanted beautiful React UIs with a design-to-code workflow. Backed by Y Combinator (S23), Tempo offers a visual IDE for React with a Figma plugin. Your email platform should create emails as polished as your app.

Tempo Labs focuses on design quality. The visual IDE, Figma integration, and design-first approach set it apart. Your email platform needs to match that standard. Visual email builders, polished templates, and design-system consistency matter.

This guide covers 10 email marketing tools that work well with Tempo-built React applications. I prioritized platforms with strong visual editors and design capabilities. If you are using a different vibe-coding tool, check out our guides for v0, Lovable, or Cursor.

Quick Comparison

Tool	Best For	Price at 10k Subs	Visual Quality	React Fit
Sequenzy	AI sequences	$49/mo	Good	Excellent
Resend	React Email	$20/mo (volume)	Excellent	Excellent
Loops	Modern design	$79/mo	Excellent	Great
Customer.io	Visual workflows	$100+/mo	Good	Good
Postmark	Templates	$15/mo (volume)	Good	Excellent
SendGrid	Design tools	$20-$90/mo	Good	Good
MailerLite	Visual editor	Free-$50/mo	Good	Good
Buttondown	Minimal design	Free-$29/mo	Minimal	Good
Mailjet	Collaboration	Free-$15/mo	Good	Good
Brevo	Templates	Free-$25/mo	Good	Good

1. Sequenzy

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

Tempo Labs focuses on beautiful React UIs. Sequenzy's visual email editor creates mobile-responsive designs, and the AI can generate complete sequences from a description. Design-focused founders need email that matches their standards.

The visual sequence builder creates polished onboarding, trial conversion, and lifecycle flows. AI generates complete campaigns from natural language, saving design time.

At $49/mo for 10k subscribers, it is 55% cheaper than Mailchimp and 51% cheaper than ConvertKit. Revenue attribution tracks which sequences drive MRR.

Sequenzy handles both transactional emails and marketing automation. Consistent design across password resets and marketing campaigns.

Where it falls short: Email designs may need refinement for brand perfection. Templates are good, not custom-designed.

Best for: Indie hackers building beautiful products who want powerful automation without sacrificing UX quality.

2. Resend

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

Resend with React Email lets you build email templates using JSX. For Tempo developers, this maintains design-system consistency between app and emails.

Build email components with the same patterns as your React app. Excellent control over design.

Where it falls short: No marketing automation. Requires development effort for each template.

Best for: Design-focused developers who want code-level control over email appearance.

3. Loops

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

Loops has excellent visual design. The interface is clean and modern. Emails look good by default.

Where it falls short: Costs more than Sequenzy. Basic automation.

Best for: Design-first founders who value aesthetic in their tools.

4. Customer.io

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

Customer.io offers visual workflow builder with good email design tools.

Where it falls short: Expensive. Learning curve.

Best for: Budget for sophisticated visual automation.

5. Postmark

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

Postmark offers clean templates with excellent deliverability.

Where it falls short: Limited design flexibility.

Best for: Clean transactional templates.

6. SendGrid

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

SendGrid offers design tools and templates.

Where it falls short: Interface is cluttered.

Best for: Scale with design tools.

7. MailerLite

Price: Free (1,000 subscribers) / ~$50/mo at 10,000

MailerLite has a good visual editor for non-developers.

Where it falls short: Not developer-focused.

Best for: Non-technical team members designing emails.

8. Buttondown

Price: Free (100 subscribers) / $29/mo at 10,000

Buttondown is minimal by design. Clean, focused, no clutter.

Where it falls short: Not for design-heavy emails.

Best for: Minimal aesthetic newsletters.

9. Mailjet

Price: Free (6,000 emails/month) / $15/mo for 15,000

Mailjet offers real-time collaborative editing for email design.

Where it falls short: Design tools are basic.

Best for: Team collaboration on email content.

10. Brevo

Price: Free (300 emails/day) / $25/mo at 20,000 emails

Brevo offers templates at budget prices.

Where it falls short: Interface feels dated.

Best for: Budget priority.

Integration Patterns for Tempo Labs

React Email templates

For design control, use Resend with React Email. Build email components that match your design system.

Next.js API routes

Tempo projects often use Next.js. Create API routes that call email platforms.

The Bottom Line

For Tempo projects, Sequenzy balances good design with powerful automation. For pixel-perfect control, Resend with React Email gives code-level design flexibility. For aesthetic tooling, Loops looks good.

See our SaaS email marketing guide for more context.

Check our guides for v0, Softgen, or Lovable.