Powershell Script which reads text files in smaller batches. - powershell

Question

I have come across an issue when sending SMTP email, to a number of email address approx. 200. I am looking for a script in which it reads a .txt file containing the 200 email addresses and in smaller batches, sends an generic SMTP message using the script below.
The script which sends the generic email is below:
$to = "TO EMAIL"
$smtp = "SMTP Server"
$from = "FROM EMAIL"
$subject = "Subject"
$body = "EMAIL BODY"
send-MailMessage -SmtpServer $smtp -To $to -Bcc (Get-Content "\\FILE Location") -From $from -Subject $subject -Body $body -BodyAsHtml -Priority high
Any help would be appreciated.

Answer 1

Here's one solution (there might be other/better ways):
$to = "TO EMAIL"
$smtp = "SMTP Server"
$from = "FROM EMAIL"
$subject = "Subject"
$body = "EMAIL BODY"
$Recipient = Get-Content "emails.txt"
$NumberOfBatches = [int]($Recipient.count / 50)
For ($i = 0; $i -lt $NumberOfBatches; $i++) {
$Emails = $Recipient | Select -First 50 -Skip ($i * 50)
Send-MailMessage -SmtpServer $smtp -To $to -Bcc $Emails -From $from -Subject $subject -Body $body -BodyAsHtml -Priority high
}
This loads the list of emails address in to a variable named $Recipient.
It then gets a count for how many batches there would need to be to send it 50 emails at a time, casting this as [int] to get a round number.
It then uses a For loop to do the number of batches defined, and uses the Select-Object cmdlet to filter the list of emails by the defined batches, by using -First and -Skip.