email-best-practices

Category: Testing & Security | Uploader: resend | Downloads: 0 | Version: v1.0（Latest）

Use when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM, GDPR, CASL), handling webhooks, retry logic, or deciding transactional vs marketing.

Changelog: Source: GitHub https://github.com/resend/email-best-practices

Directory Structure

Current level: tree/main/

📁 .github/
- 📁 workflows/
  - 📄 sync-skills.yml 707 B
📁 references/
- 📄 compliance.md 4.1 KB
- 📄 deliverability.md 3.4 KB
- 📄 email-capture.md 3.4 KB
- 📄 email-types.md 5.7 KB
- 📄 list-management.md 4.5 KB
- 📄 marketing-emails.md 3.2 KB
- 📄 sending-reliability.md 4.7 KB
- 📄 transactional-email-catalog.md 10.1 KB
- 📄 transactional-emails.md 2.4 KB
- 📄 webhooks-events.md 4.2 KB
📁 tests/
- 📁 scenarios/
  - 📄 01-spam-deliverability.md 1.7 KB
  - 📄 02-multi-region-compliance.md 1.9 KB
  - 📄 03-retry-idempotency.md 1.6 KB
  - 📄 04-webhook-bounce-handling.md 2.0 KB
  - 📄 05-new-saas-email-plan.md 2.2 KB
- 📄 README.md 1.5 KB
📄 README.md 2.5 KB
📄 SKILL.md 3.3 KB

SKILL.md

---
name: email-best-practices
description: Use when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM, GDPR, CASL), handling webhooks, retry logic, or deciding transactional vs marketing.
metadata:
  version: "1.0.0"
---

# Email Best Practices

Guidance for building deliverable, compliant, user-friendly emails.

## Architecture Overview

```
[User] → [Email Form] → [Validation] → [Double Opt-In]
                                              ↓
                                    [Consent Recorded]
                                              ↓
[Suppression Check] ←──────────────[Ready to Send]
        ↓
[Idempotent Send + Retry] ──────→ [Email API]
                                       ↓
                              [Webhook Events]
                                       ↓
              ┌────────┬────────┬─────────────┐
              ↓        ↓        ↓             ↓
         Delivered  Bounced  Complained  Opened/Clicked
                       ↓        ↓
              [Suppression List Updated]
                       ↓
              [List Hygiene Jobs]
```

## Quick Reference

| Need to... | See |
|------------|-----|
| Set up SPF/DKIM/DMARC, fix spam issues | [Deliverability](./references/deliverability.md) |
| Build password reset, OTP, confirmations | [Transactional Emails](./references/transactional-emails.md) |
| Plan which emails your app needs | [Transactional Email Catalog](./references/transactional-email-catalog.md) |
| Build newsletter signup, validate emails | [Email Capture](./references/email-capture.md) |
| Send newsletters, promotions | [Marketing Emails](./references/marketing-emails.md) |
| Ensure CAN-SPAM/GDPR/CASL compliance | [Compliance](./references/compliance.md) |
| Decide transactional vs marketing | [Email Types](./references/email-types.md) |
| Handle retries, idempotency, errors | [Sending Reliability](./references/sending-reliability.md) |
| Process delivery events, set up webhooks | [Webhooks & Events](./references/webhooks-events.md) |
| Manage bounces, complaints, suppression | [List Management](./references/list-management.md) |

## Start Here

**New app?**
Start with the [Catalog](./references/transactional-email-catalog.md) to plan which emails your app needs (password reset, verification, etc.), then set up [Deliverability](./references/deliverability.md) (DNS authentication) before sending your first email.

**Spam issues?**
Check [Deliverability](./references/deliverability.md) first—authentication problems are the most common cause. Gmail/Yahoo reject unauthenticated emails.

**Marketing emails?**
Follow this path: [Email Capture](./references/email-capture.md) (collect consent) → [Compliance](./references/compliance.md) (legal requirements) → [Marketing Emails](./references/marketing-emails.md) (best practices).

**Production-ready sending?**
Add reliability: [Sending Reliability](./references/sending-reliability.md) (retry + idempotency) → [Webhooks & Events](./references/webhooks-events.md) (track delivery) → [List Management](./references/list-management.md) (handle bounces).

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