# lexinshou/smtp-mail-luvit architecture

> Architecture diagram of the GitHub repository lexinshou/smtp-mail-luvit, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-29). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/lexinshou/smtp-mail-luvit
- Repository: https://github.com/lexinshou/smtp-mail-luvit

## Overview

This is a small SMTP mail client for Luvit. The documented workflow is to require the module, create a client, optionally configure authentication, provide the SMTP envelope and message headers/body, then send and destroy the client. The README documents these API stages but no implementation details, so the graph uses the documented entry and client paths without inferring internal calls or protocol steps.

Main entry points: [`smtp/smtp.lua`](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua) (Send Message), [`smtp/init.lua`](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/init.lua) (SMTP Module)

## Diagram (Mermaid)

```mermaid
flowchart TD

node_application(("Application"))
node_module["SMTP Module<br/>[init.lua]"]
node_client["Mail Client<br/>[smtp.lua]"]
node_auth["Authentication<br/>[smtp.lua]"]
node_envelope["Mail Envelope<br/>[smtp.lua]"]
node_headers["Message Headers<br/>[smtp.lua]"]
node_body["Message Body<br/>[smtp.lua]"]
node_send["Send Message<br/>[smtp.lua]"]
node_destroy["Destroy Client<br/>[smtp.lua]"]
node_smtp_server(("SMTP Server"))

node_application -->|"requires"| node_module
node_application -->|"creates"| node_client
node_application -.->|"sets credentials"| node_auth
node_application -->|"sets recipients"| node_envelope
node_application -->|"sets headers"| node_headers
node_application -->|"sets body"| node_body
node_application -->|"calls send"| node_send
node_send -->|"sends mail"| node_smtp_server
node_application -->|"destroys client"| node_destroy

click node_module "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/init.lua"
click node_client "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"
click node_auth "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"
click node_envelope "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"
click node_headers "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"
click node_body "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"
click node_send "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"
click node_destroy "https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_application toneIndigo
class node_module,node_auth,node_envelope,node_headers,node_body,node_send toneTeal
class node_client,node_destroy toneBlue
class node_smtp_server toneMint
```

## Components

### Other components

- **Application**
- [SMTP Module](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/init.lua): `smtp/init.lua`
- [Mail Client](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- [Authentication](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- [Mail Envelope](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- [Message Headers](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- [Message Body](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- [Send Message](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- [Destroy Client](https://github.com/lexinshou/smtp-mail-luvit/blob/main/smtp/smtp.lua): `smtp/smtp.lua`
- **SMTP Server**

## Connections

- Application → SMTP Module: requires
- Application → Mail Client: creates
- Application → Authentication: sets credentials
- Application → Mail Envelope: sets recipients
- Application → Message Headers: sets headers
- Application → Message Body: sets body
- Application → Send Message: calls send
- Send Message → SMTP Server: sends mail
- Application → Destroy Client: destroys client