Is it possible to change the subject on emails sent to be dynamic? I want to change the subject of individual statements that are emailed, using custom field but using advanced pdfs on the transaction form

How are you sending the statements? You can do this using a workflow

Through the generate statements and print individual statements, select the customer and then actions -> email

You can't customize the email via that screen

That’s what I thought, should it be a custom solution right, like a suitelet page

There are plenty out of the box options without having to script this

Oh I see, thanks! Let me check those options!