Imagine you have an internal system that sends outbound emails from accounting@yourcompany.com. Your goal is to change the sender's address accounting@yourcompany.com to reminders@yourcompany.com. This is where the sender transformation rule comes into play: it can modify the sender's email address for outbound messages.
Use the following method to specify sender transformers:
accounting@yourcompany.com), and the second value is for the new address (reminder@yourcompany.com).