> For the complete documentation index, see [llms.txt](https://a2i.gitbook.io/products-of-a2i/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder.md).

# Letter Builder

- [Description](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/description.md)
- [How It Works](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/how-it-works.md)
- [Benefits](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/benefits.md)
- [Key Functionality](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/key-functionality.md)
- [Implementation](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/implementation.md)
- [Methodology](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/methodology.md)
- [Use Case](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/use-case.md)
- [Architecture](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/architecture.md)
- [Functional Requirements](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/functional-requirements.md)
- [Technical Specification](https://a2i.gitbook.io/products-of-a2i/public-service-delivery/letter-builder/technical-specification.md)