Send emails from a csv file (grouping records with the same email addresses)

Question

Writing a script to send emails from a csv which contains record details and email addresses using the Send-Mailmessage cmdlet.
That part is no trouble, however, the csv file contain records that can have the same email address.
Is there a way/method I could send the records with the same email address once instead of sending individual email messages?
Thanks
Data in the csv file
Record number, description, email
1234, Test 1, [email protected]
5678, Test 2, [email protected]
1245, Test 3, [email protected]
4578, Test 4, [email protected]
$data = Import-csv c:\records.csv
ForEach($address in $data)
Send-mailmessage -To $address.emails -from [email protected] -subject "List of records" -Body $data -SmtpServer 192.168.1.1

Answer 1

The following code does what you are looking for:
$data = Import-csv c:\records.csv$mx = "192.168.1.1"
$subject = "List of records"
$from = "[email protected]"
$data| Group-Object email|Select-Object Name, @{n='msg'; e={$_.Group| Select-Object -Property "record number", description|ConvertTo-Csv -notypeinformation|Out-String}}|
ForEach-Object {Send-MailMessage -to $_.Name -Body $_.msg -SmtpServer $mx -Subject $subject -From $from}
I also recommend no forcing everything into one line.  "One-liner" means "one pipeline" not putting all code on one unreadable line.
Your code should look like this:
$data|
Group-Object email|
Select-Object Name, @{
n='msg'; e={
$_.Group| Select-Object -Property "record number", description|
ConvertTo-Csv -notypeinformation|Out-String
}|
ForEach-Object {
Send-MailMessage -to $_.Name -Body $_.msg -SmtpServer $mx -Subject $subject -From $from
Now we can see the code and see that you are still unnecessarily converting back and forth.
To get the group look at how I did it.
$body=$_.Group | Format-Table |Out-String
Isn't that much easier?
Once you master the pipeline these things will become second nature.  In PowerShell it is not necessary to write lots of code most of the time.
¯\_(ツ)_/¯