Add a signature so your name and contact details appear automatically
A signature is a block of text that appears at the bottom of every email you send — usually your name, job title, phone number, or website. Instead of typing this information into each message, you set it up once in your email settings, and it attaches itself automatically. Most email services let you create a signature in under five minutes.
The exact steps depend on which email service you use. Gmail, Outlook, Yahoo Mail, and Apple Mail all have signature features, but the menus are in different places. This guide covers the four most common services and walks you through finding the right setting and entering your information.
Key Takeaways
- A signature is text that appears at the bottom of every email automatically — you set it once and never type it again.
- Gmail signatures live in Settings under the "Signatures" tab, and you can create different signatures for different email addresses if you have multiple accounts.
- Outlook signatures are found under File > Options > Mail > Signatures, and you can set different signatures for new messages and replies.
- Most email services let you use basic formatting like bold and italics, but avoid fancy fonts or colors that may not display correctly on the recipient's device.
- If your signature does not appear on an outgoing email, check that you selected it in the "Signature" dropdown before sending.
How to add a signature in Gmail
Open Gmail and click the gear icon in the top right corner. Select "See all settings" from the dropdown menu. Click the "Signatures" tab near the top of the page.
Click "Create new" and give your signature a name — something like "Work" or "Personal" so you can tell them apart if you create more than one. In the text box below, type the information you want to appear at the bottom of your emails. This might be your name, job title, phone number, email address, or a link to your website. You can use the formatting buttons above the text box to make text bold or italic if you want.
Scroll down and look for the section labeled "Default signature." Use the dropdown menu to select which signature should appear automatically on new emails. You can also choose a different signature for replies and forwards if you want. Click "Save Changes" at the bottom of the page. From now on, that signature will appear on every new email you send.
How to add a signature in Outlook (desktop and web)
For Outlook on your computer: Click "File" in the top left corner, then "Options." In the left sidebar, click "Mail." Look for "Signatures" in the middle section and click it. Click "New" to create a signature, give it a name, and type your information in the text box. Use the formatting toolbar to add bold, italics, or other styling. Click "OK" when you are done.
For Outlook on the web: Click the gear icon in the top right corner and select "View all Outlook settings." Click "Mail" in the left sidebar, then "Signatures." Type your signature information in the text box. Check the box next to "Automatically add my signature to messages I compose" so it appears on every email. Click "Save" at the bottom.
In both versions, you can create multiple signatures and choose which one to use for new messages versus replies. If you have more than one email account in Outlook, you can set a different signature for each account.
How to add a signature in Yahoo Mail
Click the gear icon in the top right corner and select "Settings." Click the "Signatures" tab. In the text box, type the information you want in your signature — your name, phone number, website, or any other details.
Check the box that says "Append a signature to all outgoing messages" so your signature appears automatically. If you have multiple Yahoo email addresses, you can set a different signature for each one using the dropdown menu at the top. Click "Save" when you are done.
How to add a signature in Apple Mail
Open Apple Mail and click "Mail" in the menu bar at the very top of your screen. Select "Settings" (or "Preferences" on older versions of macOS). Click the "Signatures" tab.
Select your email account from the list on the left. Click the plus sign (+) at the bottom to create a new signature. Give it a name and type your signature text in the box on the right. You can use the formatting menu to add bold, italics, or colors, though keep in mind that some recipients may see these differently depending on their email client.
In the "Choose default signature" dropdown, select which signature should appear automatically. You can set different signatures for different accounts if you have more than one email address. Close the settings window when you are done, and your signature will appear on all new emails.
Formatting your signature so it looks professional
Keep your signature simple and readable. Most people include their name, job title, phone number, and email address. Some add a website URL or a short company tagline. Avoid using multiple colors, fancy fonts, or very large text — these often display differently on other people's devices and can make your email harder to read.
If you want to add a logo or image to your signature, most email services support this, but file size matters. Keep images small (under 100 KB) so your emails do not become too large. Test your signature by sending a practice email to yourself or a colleague and check how it looks on their device before you rely on it for important messages.
Troubleshooting when your signature does not appear
If you set up a signature but it is not showing on your emails, the most common reason is that you forgot to select it in the signature dropdown before sending. Some email services require you to choose which signature to use on each individual message, especially if you have created more than one.
Check that you actually saved your signature settings — look for a "Save" or "Save Changes" button and make sure you clicked it. If you are using Outlook, verify that the box next to "Automatically add my signature to messages I compose" is checked. If you are using Gmail, make sure you selected your signature in the "Default signature" dropdown for new messages.
If your signature still does not appear after checking these things, try refreshing your email page or closing and reopening the application. Sometimes a browser cache or temporary glitch prevents the signature from loading. If you are using a mobile email app, note that some apps do not support signatures — you may need to use the web version of your email service instead.
Frequently Asked Questions
Can I have different signatures for different types of emails?
Yes. Gmail, Outlook, and Apple Mail all let you create multiple signatures and choose which one to use for each message. You might have a formal signature for work emails and a casual one for personal messages. Some services also let you set different signatures for replies versus new messages.
What if I do not want a signature on one particular email?
Most email services let you remove the signature from a single message before you send it. Look for the signature text at the bottom of your draft and delete it manually. Some services have a dropdown menu where you can select "No signature" for that one email instead of your default.
Can I add an image or logo to my signature?
Yes, Gmail, Outlook, Yahoo Mail, and Apple Mail all support images in signatures. Look for an "Insert image" button in the signature editor. Keep the file small (under 100 KB) so emails do not become too large. Test it on a few devices to make sure it displays correctly.
Why does my signature look different on my phone than on my computer?
Different email apps and devices render text and formatting differently. Fancy fonts, colors, and images may not display the same way everywhere. Stick to simple formatting — bold and italics usually work fine — and test your signature on multiple devices before relying on it for important messages.
Do I need to add a signature to every email account separately?
Yes. Each email account has its own settings, so you need to create a signature for each one individually. If you have a work Gmail account and a personal Gmail account, you set up a signature in each account's settings separately.