How to Send Email with PowerShell Using a CSV List and Resolve Common Errors

Описание: Learn how to successfully send emails using PowerShell with a CSV list. We will also cover how to handle common errors related to email headers.
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This video is based on the question https://stackoverflow.com/q/63605632/ asked by the user 'Evo' ( https://stackoverflow.com/u/13682456/ ) and on the answer https://stackoverflow.com/a/63606261/ provided by the user 'Doug Maurer' ( https://stackoverflow.com/u/4085331/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Sending Email with PowerShell Using a CSV List

Sending emails programmatically can save a lot of time, especially when sending bulk messages. If you're using PowerShell and a CSV file containing a list of users, it's essential to set everything up correctly. In this guide, we will explore how to send emails using PowerShell and troubleshoot common issues related to email headers.

Understanding the Problem

Imagine you have a CSV file containing email recipients and their details, structured like this:

[[See Video to Reveal this Text or Code Snippet]]

You want to utilize the UsersTo and UsersCc columns to send emails. However, while trying to send messages, you encounter an error stating:

[[See Video to Reveal this Text or Code Snippet]]

This error indicates that PowerShell is having trouble processing the list of CC addresses due to the comma (,) used to separate email addresses.

The Solution

To resolve this issue, you can split the CC addresses correctly using PowerShell. Here’s a simple step-by-step guide to achieve this:

Step 1: Prepare Your CSV File

Ensure your CSV is structured correctly, particularly the UsersCc column where multiple email addresses are enclosed in quotes and separated by commas.

Step 2: Import the CSV File

Use the Import-CSV cmdlet in PowerShell to read the CSV file into a variable.

Step 3: Loop through Each Domain

Set up a loop to iterate through the domains contained in your CSV. This helps in sending emails relevant to each domain.

Step 4: Split CC Addresses Correctly

Instead of letting the Send-MailMessage cmdlet handle the splitting, do it manually before passing the email addresses. This prevents errors related to email headers.

Here is an example of how the updated PowerShell script might look:

[[See Video to Reveal this Text or Code Snippet]]

Step 5: Test the Configuration

Run the script with a test CSV file to ensure everything is configured correctly. Use a temporary file for testing, like shown below:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By splitting the CC addresses effectively and adjusting your email parameters, you can easily resolve any errors related to mail headers while sending emails using PowerShell and a CSV list. This technique not only enhances the reliability of your email-sending capabilities but also saves time when dealing with bulk notifications.

Try this technique in your scripts and streamline your email communication effectively!