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action-mailer-patterns

Implement Action Mailer transactional email workflows with TDD and deliver_later.

1|Updated Jan 8, 2026
Search Tags:#tdd#i18n#email templates#rails#transactional emails#action mailer#deliver_later
One-click install
npx skills add https://github.com/LaunchPadLab/ai-bank --skill action-mailer-patterns-launchpadlab
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: action-mailer-patterns
Source: https://github.com/LaunchPadLab/ai-bank/tree/main/claude/skills/action-mailer-patterns
Command: npx skills add https://github.com/LaunchPadLab/ai-bank --skill action-mailer-patterns-launchpadlab

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you implement Action Mailer transactional email workflows in Rails with confidence, so you can create correct templates, deliver emails safely, and keep behavior verified through TDD.

Core Features & Use Cases

  • Action Mailer foundations: set up mailers, layouts, HTML + text templates, and previews for iterative development.
  • TDD-first workflow: create mailer tests (headers, HTML body, text body) that drive mailer actions and templates to correctness.
  • Production-ready delivery: prefer Active Job with deliver_later, configure delivery methods for development vs production, and validate delivery with integration tests.
  • Common patterns: conditional emails, bulk sending with batching, email callbacks, attachments, dynamic sender/reply-to, and i18n-based subjects and copy.
  • Use case: Implement a password reset flow that includes a tokenized reset link, localized subject lines, and verified HTML/text rendering.

Quick Start

Generate a mailer and start by writing the corresponding mailer test for your welcome or password reset action, then implement the mailer method and both templates until the test is green.

Frequently Asked Questions about action-mailer-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test Rails transactional emails with TDD?▼

To set up Rails Action Mailer previews, generate a mailer and create preview classes that instantiate the mailer with sample data, allowing iterative development of HTML and text templates without sending actual emails.

How do I send Rails transactional emails in the background?▼

Send Rails transactional emails in the background using Active Job with deliver_later. This queues the email delivery asynchronously, preventing request blocking and ensuring production-ready performance for workflows like welcome emails or password resets.

How do I localize Rails email subjects and content with i18n?▼

Localize Rails email subjects and content with i18n by using translation keys in your mailer actions and templates. This allows transactional emails like password resets to render localized subject lines and copy based on the user's locale.

Can I send bulk transactional emails with batching in Rails?▼

Yes, you can send bulk transactional emails with batching in Rails. Action Mailer supports conditional emails and bulk sending patterns, allowing you to process notification digests or batch deliveries while maintaining verified headers and body content.

What's the best way to configure Action Mailer for development vs production?▼

The best way to configure Action Mailer for development vs production is to set environment-appropriate delivery methods. Use local test delivery in development and configure Active Job integration with deliver_later for reliable background processing in production.

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