Send mail from result (should be easy) - email

Question

I have built a script to check for local machine certificates from a certain issuer expiring within 400.000 days (to get a hit when testing it) on remote server, but i cant just figure out how to get the result to send the actual email as experimenting with pipes after (and in) the IF statements doesnt seem to work.
I have been googling quiet alot (ofcourse) but as I'm new to Powershell and some code is difficult at times to interpret.
I am looking for something like; if $OutputFromtheIFStatement | Measure-Object -gt 0 { Send email using $SendReportNow.}
My code:
$Servers = 'testserver1,'testserver2'
$Threshold = 400000
$Deadline = (Get-Date).AddDays($Threshold)
$MailSMTP = '-SmtpServer smtpserver.domain.com -Port 25'
$MailTo = "receiversmailaddress#company.com"
$MailFrom = "sendersmailaddress#company.com"
$MailSubject = '-Subject Certifikat expiring within 90 days'
$MailBody = '-Body ?'
$SendReportNow = 'Send-MailMessage $MailSMTP $MailFrom $MailTo $MailSubject'
Invoke-Command -ComputerName $Servers { Get-ChildItem Cert:\LocalMachine\My } | ForEach {
If ($_.NotAfter -le $Deadline -and $_.Issuer -like '*CertainCompanyName*') { $_ | Select #{Label="Servername";Expression={($_.PSComputerName)}}, Issuer, Subject, #{Label="Expiry Date & Time";Expression={($_.NotAfter)}}, #{Label="Expires In (Days)";Expression={($_.NotAfter - (Get-Date)).Days}}
}
}

Answer 1

I cleaned your code up, hopefully this is easier to digest.
$Servers = 'testserver1','testserver2'
$Threshold = 400000
$Deadline = (Get-Date).AddDays($Threshold)
$certs = Invoke-Command -ComputerName $Servers { Get-ChildItem Cert:\LocalMachine\My }
ForEach ($cert in $certs){
If ($cert.NotAfter -le $Deadline -and $cert.Issuer -like '*CertainCompanyName*') {
$body = $cert | Select #{Label="Servername";Expression={($cert.PSComputerName)}}, Issuer, Subject, #{Label="Expiry Date & Time";Expression={($cert.NotAfter)}}, #{Label="Expires In (Days)";Expression={($cert.NotAfter - (Get-Date)).Days}}
$MailSubject = "[$($cert.PsComputerName)] Certifikat expiring within 90 days"
Send-MailMessage -SmtpServer smtpserver.domain.com -Port 25 -From sendersmailaddress#company.com -To receiversmailaddress#company.com -Subject $MailSubject -Body $body
}
}
This will result in e-mails being sent like this:
Title: [ServerA] Certifikat expiring within 90 days
----- Body-------
Servername : ServerA
Issuer : CN=localhost
Subject : CN=localhost
Expiry Date & Time : 4/5/2020 8:00:00 PM
Expires In (Days) : 1627