Example

Here is an example assuming that the 'faculty' data was collected by array. Assume that there is a column of last names which is column 3, and a column of phone numbers which is column 5.

To: faculty
Subject: Stuff
Dear Prof. ![3]!,
Is ![5]! your correct phone number?
Sincerely,
Nosey 

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Here is the same example assuming that the 'faculty' data was collected by hash with the obvious keys.

To: faculty
Subject: Stuff
Dear Prof. !{last}!,
Is !{phone}! your correct phone number?
Sincerely,
Nosey 


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To the recipients, either message looks the same. Each person on the faculty list gets an email with subject Stuff and addressed to them as Dear Prof. who_ever and inquires whether the phone number in your file is correct.