Plain-text emails often feel more personal, like a message from one person to another. Designed templates, on the other hand, look more professional and can show your brand clearly with colors, images, and buttons. The choice depends on your goal. For building trust or starting a conversation, plain text usually works better because it feels natural. For promotions or product showcases, a designed email might make a stronger impression. However, too much design can make an email look like an ad, which some people skip quickly. Testing both styles helps you see what your audience prefers. Do you think people are more likely to read emails that look personal or those that look well designed?