Here’s exactly how to add a signature in Gmail, plus a few pro tips for making it look sharp.

How to add a signature in Gmail (desktop)

  1. Sign in to your Gmail account in a browser.
  2. Click the gear icon (Settings) in the top‑right.
  3. In the panel that opens, click “See all settings.”
  4. In the General tab, scroll down until you see the “Signature” section.
  5. Click “Create new.”
  6. Give your signature a name (e.g., “Work,” “Personal,” “Support”) and click Create.
  7. In the big text box, type and format your signature:
    • Your name and title
    • Company / organization
    • Phone number, website
    • Optional: logo image, social links, a short tagline or disclaimer
  8. Under Signature defaults (right under the editor):
    • For “For new emails use” → choose the signature you just created.
    • For “On reply/forward use” → choose the same one or leave blank if you want replies shorter.
  9. Scroll all the way down and click “Save changes.”

From now on, your signature will appear automatically in new emails (and replies/forwards, if you chose that option).

How to add a signature in Gmail mobile app

The mobile app has its own simpler signature that’s separate from desktop.

On Android

  1. Open the Gmail app.
  2. Tap the three lines (menu) in the top‑left.
  3. Scroll down and tap Settings.
  4. Choose the email account you want.
  5. Tap Mobile Signature or Signature.
  6. Type a simple text‑only signature (e.g., “Name | Phone | Company”).
  7. Tap OK or Save.

On iPhone / iPad

  1. Open Gmail.
  2. Tap the three lines → scroll down → Settings.
  3. Tap your account.
  4. Turn on “Mobile Signature.”
  5. Enter your signature text.
  6. Tap Back to auto‑save.

Note: Mobile signatures are usually plain text; they won’t carry over all the colors, images, and layout of your desktop signature.

How to add an HTML / designed signature

If you made a fancy signature in a generator or a design tool:

  1. Create or copy your signature in that tool, then copy it (usually “Copy signature” or “Copy HTML”).
  2. Go to Gmail Settings → See all settings → General → Signature.
  3. Click “Create new” (or choose an existing one).
  4. Click in the signature box and paste (Ctrl+V / Cmd+V).
  5. Use the formatting toolbar if you need to tweak fonts, links, or alignment.
  6. Set Signature defaults and click Save changes.

If the code is pure HTML and doesn’t paste nicely, many signature services let you copy a version optimized specifically for Gmail.

Quick tips for a professional Gmail signature

  • Keep it short: 3–6 lines is usually enough.
  • Use a readable font and size; avoid too many colors.
  • Add only relevant links: website, LinkedIn, booking link, main social profile.
  • Don’t overload it with images; one logo or headshot is usually enough.
  • If your emails go to clients, consider a short disclaimer or “Confidentiality notice” at the bottom.

Mini FAQ

Why isn’t my signature showing?

  • Check Settings → See all settings → Signature defaults and make sure the right signature is selected for new emails and replies.
  • For the mobile app, remember it uses its own “Mobile Signature” setting.

Can I have multiple signatures?
Yes. Create several, name them (e.g., “Work – Sales,” “Support,” “Personal”), then while composing an email click the pen icon / signature icon at the bottom of the compose window to switch between them. TL;DR: Go to Gmail Settings → See all settings → Signature → Create new , design your signature, set it as the default, and Save changes.