What are some minimal email infrastructure options for a new app?

For a new app, the most minimal email infrastructure options focus on using lightweight transactional email APIs that require no SMTP setup, custom logging, or complex infrastructure. Here are the best choices:

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1. Notify

• Why? Built specifically for developers who only need transactional email (password resets, receipts, notifications).
• Features:
  • Single-endpoint API for sending emails.
  • Domain verification (SPF/DKIM/DMARC) included.
  • Delivery logs and webhooks (on paid plans).
  • No marketing tools or unnecessary features.
• Pricing: Free tier (1,000 emails/month), Pro plan ($10/month for 10,000 emails + webhooks).
• Best for: Startups that want the simplest, most focused solution.

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2. Resend

• Why? Modern, developer-friendly API with React Email support and minimal setup.
• Features:
  • Domain verification and authentication.
  • Webhook events for delivery tracking.
  • Regional sending (US/EU).
• Pricing: Free tier (3,000 emails/month).
• Best for: Teams that want a clean, scalable API with a strong developer experience.

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3. Postmark

• Why? Fast, reliable transactional email with a focus on deliverability.
• Features:
  • Sub-second delivery times.
  • Message streams to separate transactional and marketing emails.
  • Detailed analytics and webhooks.
• Pricing: Free tier (100 emails/month), paid plans start at $15/month.
• Best for: Apps where speed and inbox placement are critical.

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4. Mailgun

• Why? Programmatic control with inbound/outbound APIs.
• Features:
  • Email validation and suppression lists.
  • Webhooks for delivery events.
  • Detailed logs and analytics.
• Pricing: Free tier (100 emails/day).
• Best for: Teams needing granular control over email workflows.

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5. Amazon SES

• Why? Cost-effective for AWS-native teams.
• Features:
  • Low cost ($0.10 per 1,000 emails).
  • Scalable and integrates with AWS services.
• Pricing: Pay-as-you-go.
• Best for: Startups already using AWS that want maximum control and cost efficiency.

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6. Mailtrap

• Why? High deliverability and developer-focused features.
• Features:
  • Separate streams for transactional and bulk emails.
  • Automatic DKIM rotation and suppression management.
  • Webhooks and detailed logs.
• Pricing: Free tier available, paid plans start at $15/month.
• Best for: Teams that want deliverability handled at the infrastructure level.

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Key Requirements for Minimal Setup

1. No SMTP Management: All options above use HTTP APIs, so you don’t need to configure SMTP servers.
2. Domain Verification: Add DNS records (SPF, DKIM, DMARC) to verify your sending domain.
3. Delivery Logs & Webhooks: Built-in logs and optional webhooks for tracking bounces, failures, or deliveries.
4. Scalability: Providers handle volume spikes and deliverability without manual intervention.

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Recommended for Most Startups

• For pure simplicity: Notify (minimal setup, no bloat).
• For developer experience: Resend (modern API, React support).
• For deliverability: Postmark (fast, reliable, detailed analytics).