django-anymail is a Django library that provides a unified interface for sending transactional email through multiple Email Service Providers (ESPs) such as Amazon SES, Mailgun, SendGrid, Postmark, SparkPost, Mailjet, Brevo, Resend, Mailtrap, Postal, Scaleway, Unisender Go, and MailerSend. It extends Django's built-in email framework with ESP-specific features like tags, metadata, inline images, merge data, templates, and click/open tracking. The library also handles inbound email and tracking webhooks, normalizing ESP-specific events into Django signals. Architecture follows a backend pattern: each ESP has a concrete EmailBackend class that implements `build_message_payload` and `post_to_esp`, with common logic in base classes (`AnymailRequestsBackend`, `BasePayload`). Webhook views are similarly structured with base classes for signature validation and event dispatch. The codebase is well-tested with both mock unit tests and live integration tests run weekly against real ESP APIs. It is a mature, actively maintained library with a clean separation of concerns and extensive documentation.
inletsctl is a CLI tool for automating the creation and management of inlets tunnel servers on various cloud providers. It provisions VMs with inlets-preinstalled via cloud-init, provides connection strings for clients, and supports deletion and Kubernetes port-forwarding. The application uses a modular Cobra-based architecture with provider-specific implementations abstracted through the cloud-provision package. Key functions include creating HTTPS/TCP tunnel servers, deleting cloud resources, downloading inlets binaries, and forwarding Kubernetes services to local machines.