A P.S. can be useful because many people naturally glance at the end of an email, and this small line can repeat an offer or highlight something important. It works well when it feels like a friendly last thought rather than a sales push. But when every email ends with a P.S., it may start to feel predictable and lose its effect. It is usually better when used only in emails that need an extra reminder or quick note. A thoughtful P.S. can help guide attention, but a forced one might weaken the message. Do you think people still notice a P.S. when they see it in nearly every message?