A signature is a small piece of design that you send to people hundreds of times. That repetition is what makes it worth getting right — but it also means the design should feel natural, not forced.
The first decision is layout. Do you want a photo, or not? Photos add warmth and recognition, especially for people who meet you in person or on video calls. But a text-only signature can feel cleaner and more modern, especially for developers and designers.
If you use a photo, keep it simple: a headshot, a consistent crop, and a shape that matches your overall style. Circular photos feel friendly and modern. Square photos feel structured and corporate. Rounded corners split the difference.
The second decision is color. Most signatures use one or two colors at most — a primary text color (usually dark gray or black) and an accent color for links, labels, or a divider. The accent is where you can bring in a brand color without overwhelming the layout.
If your company has a brand color, use it as the accent. If you're freelancing or representing yourself, pick something that feels right but stays subtle. Bright red or neon green in a signature is distracting; a muted blue, teal, or warm gray is quietly confident.
The third decision is what to include. Name and title are essential. Email and phone are standard. Website is useful if you have one worth visiting. Social links are optional — include them only if they're profiles you actively maintain. A link to an abandoned Twitter account is worse than no link at all.
Finally, think about hierarchy. The most important thing is your name. The second is your title and company. Everything else supports those two. If your signature has five social links, a CTA button, a quote, and a disclaimer, the reader's eye doesn't know where to land.
The best signatures feel inevitable — like they couldn't be any other way. That comes from restraint, not addition.