Why Your Email Signature Looks Different Everywhere
You craft the perfect signature—logos, fonts, spacing, links. But when you send it, it’s a mess on Outlook, a blurry mess on iOS, and barely readable on mobile. Why?
Because every email client is its own universe. Gmail strips styles, Apple Mail scales fonts unpredictably, and mobile apps chop up HTML without mercy. What looks clean on your desktop? It’s a different story on a phone.
It’s not your fault. It’s how email rendering works: built on old standards, inconsistent, and unforgiving. But you can fix it. This guide shows you how to make an email signature look the same on every device—without guessing, without redesigning every week.
Key takeaways
- HTML and CSS in email signatures are heavily stripped or ignored by clients like Gmail and Outlook.
- Mobile devices render fonts, spacing, and images differently—always test on real devices.
- Use inline styles, web-safe fonts, and single-table layouts to maximize consistency across platforms.
What You Can Control: The Core Elements of a Consistent Signature
You can make an email signature look the same on every device by using inline CSS, simple table layouts, web-safe fonts, fixed-size images, and testing across real devices. Avoid relying on external styles or complex design patterns—these break across clients. Stick to basics, and your signature will hold up whether it’s opened on a desktop, iPhone, or Gmail.
Stick to What Email Clients Will Respect
- Use only inline CSS—never
