bamboo

Ships with built-in adapters for popular services like Mandrill, Mailgun, and SendGrid, and supports writing custom adapters, making it easy to integrate with various email providers.

Provides a TestAdapter for integration testing without external sends and allows unit testing by asserting against email structs, as demonstrated in the README's testing examples.

Uses plain Elixir functions and piping for email creation, enabling a clean, composable approach that fits naturally into Elixir workflows.

Includes a plug to view sent emails in development, useful for debugging confirmation links and transactional emails without checking logs.