How can I change this script so that it can send out emails using Outlook365?

Good day.
I would like to change this powershell script to enable me to send an email with an attachment out from a computer.
I am not sure that the reference to the smtp for office 365 is correct.
And I also feel that port 587 and TLS is a requirement, however I am not sure.

Any helps is greatly appreciated.

#-------DO NOT MODIFY-------#
    #Yesterdays Date
        $date = ((Get-Date).AddDays(-8)).ToString("MMM/dd/yyyy")

#-------MODIFY AS NEEDED-------#
    #Mail Subject
        $Subject = "Report: "+$date+" REVISED "
    #Body of Email
        $MessageBody = "REVISED - Thank you."

      # Invokes the Send-MailMessage function to send notification email
Send-MailMessage -From '' -To '' `
  -SmtpServer '' `
  -Subject  $subject `
  -body $MessageBody `
  -BodyAsHtml `
  -Attachment 'C:\Attachment\123.pdf'
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Vasil Michev (MVP)Commented:
You cannot send unauthenticated mail using Use a licensed account and provide credentials:

Send-MailMessage -From -To -SmtpServer -UseSsl -Port 587 -Subject $subject -Body $MessageBody -Credential $cred -BodyAsHtml -Attachment 'C:\Attachment\123.pdf'

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100questionsAuthor Commented:
Thanks, then in that case I want to embed the credentials in this script.
How can I do that.
Vasil Michev (MVP)Commented:
There are multiple methods to store/reuse credentials, here's an example from one of my articles:

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PberSolutions ArchitectCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Vasil Michev (MVP) (https:#a42347101)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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