The following script demonstrates the usage of ClientEmail in the Professional Services Library:

//@version "2.0" 
//@include "database:PS.js" 
 
function ClientEmailContact() { 
    // Get all required pieces of information for the email 
    var email = Field( 'Customer_Email_1' ); 
    var subject = "Job Number "+Field( 'Job Number' )+" has been completed."; 
    var message = "Job "+Field( 'Job Number' )+" has been completed, and can be picked up at the central desk."; 
    // Do we want to use the built-in alert if the email is empty? 
    var generate_alert = false; 
 
    // Test to ensure the email client has been opened 
    if(!PS.ClientEmail( email, subject, message, generate_alert)){ 
        alert("There was a problem opening the default mail client."); 
    } 
}

A common use of the ClientEmail function is on a button click, allowing the user to modify the subject, message, or even attach a file.