Define To: field from from various values - powershell

Question

In a CSV file I have various columns and two of those are for emails. Each row within these email columns have a group of emails.
I want to be able to send to these email addresses from a script.
I have everything setup and working, except for the TO:.
The idea of the script is that it loops each line of the csv and generates an email grabbing values from the cells of that row into various parts of the body. Then it sends of an email and loops back to the next line of the CSV to do the same, and so on until it reaches the end of the CSV file.
I'm having issues to plug a variable for the email columns, I'm guessing because the emails don't have "quotations".
How do I bring these in?
In a nutshell for the code
data is imported CSV
a loop is created foreach line of imported data
smtp, from, to, subject, attachments, body variables are defined
then the sendmail-message command is provided.
close the loop
##For the purpose of this, the emaildata.csv looks like this sample:
"NameGroup","emailGroupA","emailGroupB"
"Groupabc","a.b#b.com;c.a#b.com","xyv#b.com;xxd#b,com"
"Grouptrd","ca.r#b.com;as.b#b.com","aaa#a.com;bbb#b.com"
"Groupghd","dd.r#b.com;dd.b#b.com","dddaa#a.com;ddddddb#b.com"
$DataDir = "C:\Users\acastrellon\Documents"
$Data= import-csv $DataDir\emaildata.csv
foreach ($i in $Data) {
$NameGroup = $i.NameGroup
$TeamA = $i.emailGroupA.replace(';',"`n")
$TeamB = $i.emailGroupB.replace(';',"`n")
function send-email {
$smtpserver = " server.smtp"
$from = "myemail.com"
$to = $TeamA,$TeamB
send-MailMessage -From $from -To $to -Subject $subject -Body $body -SmtpServer $smtpServer
}
[string] $subject = "some text here: $NameGroup"
#[string] $attachment = "not here yet"
[string] $body = "
Text here that calls out $NameGroup
This also lists: $TeamA
This here lists $TeamB
Done"
send-email -subject $subject -attachment $attachment -body $body
}
#this should loop to get data from next line of csv and generate a new email with data.

Answer 1

Unlike a batch file where environment variables have a global impact to the current session, PowerShell isolates variables in different scopes.
You're referencing the two $TeamA & $TeamB variables inside a function but you set their values outside the function. Because the function scope (where they are read) is different to the script scope (where you set them) those variables will be empty inside the send-email function in your script.
Have a read on PowerShell scopes as you'll need to make some changes to your script functions; to either read the variables from the script scope ($script:TeamA) or to pass them into the function as a parameter