Lightweight SMTP email module for PowerShell. Zero dependencies, several sending accounts like msmtp (passwords in the Windows Credential Manager or an owner-only file) or environment-based configuration, automatic retry with exponential backoff. Perfect for CI/CD pipelines, automation scripts, and scheduled tasks.

Business day (workday) arithmetic for PowerShell, driven by plain-text holiday calendars: next and previous workdays, adding workdays, counting workdays between dates, month boundaries and business day conventions. Zero dependencies, cross-platform.