What to Include in an Email Signature
Include your full name, job title, organization and one or two contact methods the recipient is likely to use. Everything else, such as social links or a banner, has to earn its place.
What Not to Include in an Email Signature
Leave out quotes, long legal text that your organization does not require and lists of every social profile. Avoid putting essential details only inside an image, because many clients block images by default. Keep personal details such as a private phone number out unless the recipient needs them.
Email Signature Design Best Practices
Make your name the most prominent line and keep secondary details smaller and quieter. Use one font family, strong contrast and at most one accent color.
Email Signature Format
A common format puts the name on the first line, the title and organization on the second and contact details below. Separate items with line breaks or a simple divider rather than decorative characters that screen readers may announce. Keep the block short enough to scan in a mobile preview.
| Element | Recommended approach | Reason |
|---|---|---|
| Name and role | Readable text | Works without images |
| Contact links | Only useful destinations | Reduces clutter |
| Logo | Small HTTPS image with alt text | Fallback remains understandable |
| Formatting | Conservative HTML | Client support varies |
Email Signature Image Size
Export a logo or photo at the size it will display, or at twice that size for sharp results on high-density screens, and keep the file small. Host it at a public HTTPS address you control and give it short alternative text.
Email Signature Image Not Showing
Many clients block remote images until the recipient allows them, and some load them through a proxy. Images pasted as attachments can also arrive as separate files instead of inline. Keep your name and contact details as text so the signature still works when images are missing.
HTML Email Signature Best Practices
Build the signature with simple tables and inline styles, because email clients support far less CSS than browsers do. Avoid scripts, forms and background images, and do not rely on web fonts.
How to Add an Email Signature
Paste the formatted signature into your email client’s signature settings, then choose whether it appears on new messages, replies and forwards. Send test messages to desktop and mobile clients and check links, wrapping, dark mode and the view with images turned off.
Email Signature in Gmail
In Gmail on the web, open Settings, choose See all settings and scroll to Signature on the General tab. Create a new signature, paste your design and select it under signature defaults for new emails and for replies or forwards. Click Save Changes at the bottom of the page.
Email Signature in Outlook
In the new Outlook and Outlook on the web, open Settings, then Account and Signatures, create a signature and choose its defaults. Classic Outlook for Windows keeps signatures under File, Options, Mail and Signatures. Signature settings can differ between apps and devices, so check each one you send from.
Frequently Asked Questions
Should You Include a Signature on Every Email?
Use the full signature on first contact and new messages, where the reader may need your details. In long reply threads a shorter signature with your name and title is usually enough. Gmail and Outlook let you set different defaults for new messages and replies.
Are Email Signatures Necessary?
They are not required for personal mail, but in business email they help recipients identify you and reply through another channel. Some organizations and jurisdictions also require company details in business correspondence. Check your employer’s policy before you change a company signature.
How Many Lines Should an Email Signature Have?
There is no fixed rule, but most effective signatures fit in about three to five short lines. Combine related details on one line, such as title and organization. If the signature is taller than the message above it, shorten it.
Where Should You Put a Logo in an Email Signature?
Place the logo beside or below your name rather than above it, so the text stays first and readable when images are blocked. Link it to your website only if that link helps the recipient. Keep it small enough that it does not dominate a short reply.