You probably use “Send-MailMessage” across many scripts.  I sure do.

Why repeat configuration in every script?   That’s a headache to update and manage long term.   I suggest keeping that configuration in Machine Environment Variables.   These save globally and are visible to any downstream code including:

• PowerShell
• Dot Net
• IIS
• Windows Service
• Windows Form
• .. and more

Below is an example using “$env:smtp” to send email from PowerShell.   Now all of your scripts are simpler and as you move PS1 files across environments (dev, test, acpt, prod) the configuration will follow naturally.   Cheers!  

Code

Send-MailMessage
 -To "admin@demo.com"
 -From "sharepoint-no-reply@demo.com"
 -Subject "hello world"
 -Body "hello world"
 -SmtpServer $env:smtp

Screenshot