Process.Start(@"\Windows\STMail.exe", mailto:test@test.com?cc=cc@test&bcc=bcc@bcc&subject=subject&body=body);
bcc, cc が不要な場合は Process.Start(@"\Windows\STMail.exe", mailto:test@test.com?subject=subject&body=body);
C#, PowerShell プログラミングの覚書、雑記など
Process.Start(@"\Windows\STMail.exe", mailto:test@test.com?cc=cc@test&bcc=bcc@bcc&subject=subject&body=body);
bcc, cc が不要な場合は Process.Start(@"\Windows\STMail.exe", mailto:test@test.com?subject=subject&body=body);