Updated 7 Nov 2026 · Checked against Hilsio content index · By Hilsio team
Short answer
Most email apps want a rendered signature pasted into settings, not raw HTML. Pick your app below for current steps, including how to keep your logo from breaking. Not sure which Outlook you have? Start with new Outlook or classic Outlook.
New Outlook
How to add an email signature in new Outlook for WindowsIn new Outlook for Windows (and Outlook on the web), go to Settings > Accounts > Signatures. Choose the account, select
Updated 7 Nov 2026
Gmail (web)
How to add an email signature in GmailIn Gmail on the web, open Settings › See all settings › General › Signature. Click Create new, name the signature, paste
Updated 7 Nov 2026
Outlook mobile
How to add a signature in the Outlook mobile appIn the Outlook app, tap your profile picture › Settings (gear) › tap your account › Signature. Type or paste a short sig
Updated 7 Nov 2026
iPhone Mail
iPhone Mail signature with an image (unofficial workaround)On iPhone, open Settings › Mail › Signature. Apple documents text-only signatures. Some users paste rich text from Notes
Updated 7 Nov 2026
Classic Outlook
How to add an email signature in classic Outlook for WindowsIn classic Outlook for Windows, open File › Options › Mail › Signatures. Click New, name the signature, paste your conte
Updated 7 Nov 2026
Gmail app
Gmail app signature not showing on mobileThe Gmail app can use your Gmail web signature when no separate mobile signature is set (Google's April 2025 update). If
Updated 7 Nov 2026
Apple Mail
How to add a signature in Apple Mail on MacOn Mac, open Mail › Settings › Signatures. Select an account, click the + button, paste your signature, and drag the sig
Updated 7 Nov 2026
Usually not directly. Gmail, new Outlook and iPhone Mail expect a rendered signature, so you copy what you see in a preview and paste into settings. Classic Outlook can accept richer HTML, but pasting rendered output is still simplest.
Each app renders HTML differently. Classic Outlook uses Word, Gmail strips some styles, and phone apps resize images. Table layouts, inline styles, and hosted PNG or JPG images stay the most consistent.
Free signatures include one small “Created with Hilsio” text link.