# DbSets / Messages

Email message querying and CRUD operations with sender/recipient/context filtering.

## Key Files

- **`IAcEmailMessageDbSet.cs`** — EmailMessage DbSet interface.
- **`AcEmailMessageDbSetExtension.cs`** — GetEmailMessageById, GetEmailMessagesByContextId/SenderId, filter by sender/recipient, AddEmailMessage, UpdateEmailMessage, RemoveEmailMessage.