The SQL Server outbox implementation of SqlTransactionalOutbox framework using legacy System.Data.SqlClient libraries. A lightweight library & framework for implementing the Transactional Outbox pattern in .Net with default implementaions for SQL Server & messaging via Azure Service Bus. Some of the key benefits offered are support for running in serverless environments (e.g. AzureFunctions) or in standard hosted .Net applications (via asynchronous background 'worker threads'), and support for enforcing true FIFO processing to preserve ordering, scheduled events for future delivery, and simplified abstractions for the Outbox, Outbox Processing, and Messaging systems utilized.