How to install a html email signature in Proton Mail on iOS

Install Guide Updated On:

June 30, 2025

Learn how to quickly and correctly install an HTML email signature in Proton Mail App on iOS. This step-by-step installation guide walks you through everything you need, from preparing your signature to adding it into Proton Mail App, so your emails always display a clean, professional, and consistent signature. Follow along to ensure your HTML email signature installs smoothly and works flawlessly across all devices.

Recommended

Key Install Guide

Install with app, supports automatic installs & updates.You can find your Signature Key on your Email Signature Rescue Dashboard, or in the email sent to you by your Admin. Copy your Key now and get ready to paste it when prompted, following the Key Install Guide.

Go to Key Install Guide for Proton Mail App on iOS

Direct Install Guide

Install directly, no automatic install & updates.You can find your HTML file on your Email Signature Rescue Dashboard, or it is attached to the email sent to you by your Admin. Open the HTML file in your browser, then follow the Direct Install Guide.

Go to Direct Install Guide for Proton Mail App on iOS

Key Install Guide: Proton Mail App iOS

Direct Install Guide: Proton Mail App iOS

Install directly into software, no automatic install & updates.You can find your HTML file on your Email Signature Rescue Dashboard, or it is attached to the email sent to you by your Admin. Open the HTML file in your browser, then follow the Direct Install Guide.

Key Install is recommended

As your email client supports Key Install, only use this Direct Install guide if Key Install is not working or not available for your requirements.

Follow the instructions for installing your email signature into Proton Mail in your web browser. Once your email signature is set up within your Proton Mail account, it will work from the iOS App.

Proton Mail App Professional Templates

Stand Out with Beautiful Email Signatures for Proton Mail on iOS

Create professional email signatures that make a lasting impression. Easy to customize, always looks perfect across all email clients.

Proton Mail App Email Signatures