How to Add WhatsApp to Your Email Signature

To add WhatsApp to your email signature, create a wa.me link with your number, then add it as a text link in your signature settings: in Gmail, Settings › See all settings › Signature, and in Outlook, Settings › Accounts › Signatures. Anyone reading your email can tap it and land in a chat with you, without saving your number.

This guide gives the exact steps for Gmail and Outlook, ready-made link wording for different teams, an HTML snippet, and what WhatsApp’s brand rules mean for adding the logo. For everything about links themselves, including QR codes and short links, see our WhatsApp link and QR code guide.

Step 1: build the link for your signature

WhatsApp’s click to chat format is https://wa.me/ followed by your full number in international format. Leave out any leading zeros, brackets and hyphens. Adding ?text= and a URL-encoded message puts that text in the customer’s typing box, and they can edit it before sending.

A signature has one job that a website button doesn’t: it goes out with every person’s email, so each team can have its own opening line. Sample links, where 91XXXXXXXXXX is your number:

Our free WhatsApp link generator encodes the message for you. Tap the finished link on your own phone before you paste it anywhere.

Add a WhatsApp link to your Gmail signature

1. Open Gmail on a computer.
2. At the top right, click Settings, then See all settings.
3. On the General tab, scroll to Signature and click your signature, or create a new one.
4. Type your link text, such as Chat with us on WhatsApp.
5. Select that text, click the link icon in the toolbar and paste your wa.me link.
6. Scroll to the bottom of the page and click Save Changes.

Adding an image in Gmail

• You can add a signature image from a public web address, from My Drive, or by uploading it from your device. If one way fails, Google suggests trying another.
• An image from Drive must be shared publicly, with anyone who has the link able to view it.
• Gmail allows up to 10,000 characters in a signature, and images count towards that.

Gmail on your phone

On Android, open the Gmail menu, go to Settings, choose the account and tap Mobile signature. On iPhone, open the menu, go to Settings › Compose and Reply › Signature settings and turn on Mobile Signature; with several accounts, set it for each one. It shows only on emails sent from the app. If you create one, it replaces your computer signature there, so paste your full wa.me link as plain text and test it from your phone.

Add WhatsApp to your Outlook signature

New Outlook, Outlook on the web and Outlook.com

1. Select the Settings gear, then Accounts › Signatures.
2. Choose the account if you have more than one.
3. Select Add signature and give it a name.
4. Type your signature and your link text, then add the wa.me link to that text.
5. Tick whether it should go on new messages, on replies and forwards, or both.
6. Select Save.

Classic Outlook for Windows

1. Open a new message, then select Message › Signature › Signatures.
2. Under Select signature to edit, choose yours or select New.
3. In Edit signature, select your link text or picture.
4. Use the link option in the formatting bar, or Insert › Hyperlink, and put your wa.me link in the Address box.
5. Under Choose default signature, set it for new messages and for replies.
6. Select OK.

HTML snippet for an email signature

Replace the number, the message and the sender details. Plain text link:

<p style="margin:0;font:14px Arial,sans-serif">Asha Rao, Sales | Example Traders<br><a href="https://wa.me/91XXXXXXXXXX?text=Hi%2C%20I%20saw%20your%20email" style="color:#075e54">Chat with us on WhatsApp</a></p>

With an icon you host yourself. The word stays in the text, so the link still makes sense when images are blocked:

<a href="https://wa.me/91XXXXXXXXXX" style="font:14px Arial,sans-serif;color:#075e54"><img src="https://www.example.com/images/whatsapp-icon.png" alt="" width="20" height="20" style="vertical-align:middle"> Chat with us on WhatsApp</a>

Gmail’s signature box and the new Outlook editor take formatted text rather than code. A simple way in: save the snippet as a .html file, open it in your browser, select what you see, copy it and paste it into the signature box. For classic Outlook, Microsoft suggests building a formatted signature in Word and pasting it into Edit signature.

Then send a test email to yourself at a different provider and tap the link on a phone. Signatures can look different in other people’s email apps.

Adding the WhatsApp logo or icon: what the brand rules say

WhatsApp’s brand guidelines don’t cover email signatures specifically, but their general rules apply.

Google’s guidance for signature images is a height of 70 to 100 pixels and a width of 300 to 400, with a maximum of 100 by 1,000. That’s Google’s guidance for signature images in general. For one small icon beside your text, about 20 by 20 pixels is usually enough: it’s our suggestion, not a rule. Host it on your own website so nobody depends on a shared Drive file.

Signature wording that gets used

A bare “WhatsApp” label says little. Tell people what they’ll get, and when.

Use a business number that someone actually watches. Only state hours you really keep, and if your number is shared by a team, say “message us” rather than “message me”.

What happens when someone taps the link

WhatsApp opens with your number and the pre-filled message. Nothing is sent until they press send. Once they do, a 24-hour customer service window opens and you can reply freely.

• A chat isn’t marketing permission. Someone asking about an invoice hasn’t agreed to receive your offers. See WhatsApp opt-in.
• Don’t add everyone you email to WhatsApp lists just because you have their mobile number.
• Plain links don’t report clicks in WhatsApp. The pre-filled message is your simplest clue to where a chat came from.

If you run on Automate AI, chats from every signature land in one shared inbox. A word in the pre-filled message can also act as a chatbot keyword, so “Hi, I need help with my order” could start a flow keyed on “order”. Chatbots are included in the AI + Automation Plan and Series 4. If you later want to promote offers to people who agreed, that’s Campaigns.

If it doesn’t work