Email won't trigger if record is updated by business rule

[Abbottronix]

I had a problem with an email not triggering when a record is updated, and I figured out I could get it to trigger if I updated the record manually. Unfortunately, the record is supposed to be updated by a business rule script, and the email isn't triggered when the record is updated this way. Does anyone have any idea why the email detects a manual update, but not an update performed by the business rule? Is there anyway I can get the email to trigger when the record is updated by the business rule? 

For reference, this is the part of the business rule that updates the record:

[Ravi Gaurav]

Hi @Abbottronix adding to @Amit Verma 

Use Script Action instead of a Business Rule. Script Actions are designed to trigger events, including email notifications.
sample Script :-

var gr = new GlideRecord('your_table_name');
gr.addQuery('sys_id', current.sys_id);
gr.query();
if (gr.next()) {
var newGr = new GlideRecord('your_table_name');
newGr.sys_id = gr.sys_id;
newGr.your_field_name = 'new_value';
newGr.setWorkflow(false); // Set workflow to false
newGr.update();
}