Email Signature Generator

What actually belongs in an email signature

An email signature is a business card that gets seen dozens of times a day, and the most common mistake is treating it as decoration rather than contact information. The job is simple: let someone reach you, verify who you are, and move on. Everything beyond that is noise that costs you readability.

The five lines that matter

1. Your name — the one you actually use professionally.
2. Your job title — so the recipient knows whether you can make a decision.
3. Your company — with a link to the site.
4. One reliable phone number — the one you will answer, not all three you own.
5. Your email address — obvious, but useful when a message is forwarded and the header is stripped.

Anything else earns its place only if it does real work. A LinkedIn URL is worth including if your role involves networking or hiring. A booking link is worth it if scheduling is a regular part of your job. A pronoun line is worth it if your organisation uses them.

What to leave out

• Images and logos. Many clients block images by default, so your carefully designed signature arrives as a broken-image icon with alt text. Text-based signatures render everywhere.
• Inspirational quotes. They read as personal rather than professional, and they follow every message you send for years.
• "Sent from my iPhone". It adds nothing and quietly excuses typos you should just fix.
• Every social account you own. Five icons dilute the one link you actually want clicked.
• Long legal disclaimers — unless your employer requires one. They rarely have the legal force people assume, and they make every reply longer.
• A second signature under a reply. Set your reply signature to something short, or none at all, so threads do not fill with repeated blocks.

Why images break signatures

Email clients are not browsers. Outlook renders HTML with a word-processing engine, Gmail strips styles it does not recognise, and most clients block remote images until the recipient clicks to load them. That is why every layout here uses inline styles, plain text and a coloured border rather than an image — a border renders identically everywhere, a logo does not.

If your company genuinely requires a logo, host it on your own domain, keep it under 100px wide, and always set alt text so the signature still reads when the image is blocked. If you need to shrink a logo to that width without opening design software, our image resizer does it in the browser, and the image compressor will get the file size down so it loads before the reader has scrolled past.

Keep it short

Four to six lines is the working range. On a phone screen, a signature longer than the message itself is what people remember, and not kindly. If you find yourself needing more room, that is usually a sign the extra content belongs on your website rather than at the bottom of every email.

The reply signature is the one people get wrong

Most email clients let you set two signatures: one for a new message and one for replies and forwards. Almost nobody configures the second one, and the result is a thread where the same eight-line block appears after every single message. By the fifth exchange, more than half the thread is your own contact details repeated back at a person who already has them.

The fix takes thirty seconds. Generate your full signature here for new messages, then set your reply signature to just your first name, or nothing at all. In Gmail this is the second dropdown under Signature defaults; in Outlook it is the "Replies/forwards" selector in the same Signatures dialogue. The full block does its job on first contact, and after that it gets out of the way.

There is a related habit worth adopting: if you are replying to someone inside your own organisation, you almost certainly do not need a signature at all. Internal threads are where signature bloat does the most damage, because they are the threads that run longest.

How your signature behaves in dark mode

A growing share of email is read with a dark theme enabled, and dark mode is not a single behaviour — it is three different behaviours depending on the client. Some clients leave your colours alone. Some invert only backgrounds that were left undefined. Some aggressively recolour everything, including text you explicitly set to a dark grey.

This is another argument for restraint. A signature built from dark text on an undefined background survives all three behaviours, because there is no background colour for the client to fight with and the text colour flips predictably. A signature built from a dark navy block with white text on top of it can end up as white text on a white block in exactly the clients that recolour most aggressively — unreadable, and you will never see it, because it looks fine on your machine.

The accent colour picker here defaults to a navy that stays legible in both themes. If you change it, favour a mid-tone saturated colour over a very light or very dark one. Very light accents disappear against white in light mode; very dark ones disappear against black in dark mode. Something in the middle survives both, and you can check the ratio against a white background with our colour contrast checker before you commit to it.

Contrast and link text: the accessibility part nobody checks

Signatures are frequently the least accessible part of a business email, mostly because they get designed once and never reviewed. Two things account for most of the problem.

The first is contrast. Grey-on-white contact details look elegant in a design mockup and become genuinely hard to read for anyone with reduced vision, particularly at the 11px or 12px sizes signatures tend to use. The W3C's minimum contrast guidance sets 4.5:1 as the floor for normal-size text, and a lot of signature grey sits well under it. The layouts here keep body text at a contrast level that clears that bar comfortably.

The second is link text. A signature that renders your email address as the visible text of a mailto link is doing the right thing — a screen reader announces something meaningful. A signature that hides three different destinations behind the words "here", "click" and "link" is not. Every link this generator produces uses the destination itself as the visible text, which is both more accessible and more useful when someone prints or forwards the message.

What the law may require in your business email

In several jurisdictions, business email is treated as business correspondence and carries disclosure requirements. UK limited companies, for instance, must state the registered company name, registered number, place of registration and registered office address on their business emails — the UK government's guidance for running a limited company sets out what has to appear. Similar rules exist across much of the EU, and regulated sectors often add their own.

If that applies to you, the practical approach is to put the required details in the optional address and sign-off fields rather than in a separate legal paragraph. Requirements change and vary by country and company type, so confirm the current rules for your own jurisdiction rather than copying another company's footer — the fact that a competitor includes something is not evidence that you must, and the fact that they omit it is not evidence that you may.

Rolling one signature out across a team

Consistency across a team is worth more than perfection on any single signature. When everyone at a company formats their details the same way, recipients stop having to hunt for the phone number, and forwarded messages look like they came from one organisation rather than eight freelancers.

You do not need a paid signature-management platform to achieve that. Generate one signature here using a colleague's details, copy the HTML source, and circulate it as a template with the personal fields marked for replacement. Fix the layout, the font, the text size and the accent colour centrally; let people change only their own name, title and contact details. If you want everyone using the exact same accent, pull the hex value from your brand assets with the image colour picker and share that one code rather than a verbal description of the colour.

For the surrounding stationery, the same principle applies: our letterhead generator and invoice generator let you carry the same details and accent colour into documents, so a quote, an invoice and an email all look like they came from the same company.

Testing before you roll it out

The single biggest cause of a broken signature is that it was only ever checked in the client it was created in. A five-minute test catches almost everything worth catching.

1. Send it to yourself and read it on your phone as well as your desktop. Phone screens are where long signatures wrap badly and where a five-line block becomes a nine-line one.
2. Send it to an account on a different provider. If you work in Outlook, test in Gmail, and vice versa. These two render HTML differently enough that a signature can look correct in one and awkward in the other.
3. Reply to your own test so you can see how the signature stacks in a thread, and confirm your reply signature is the short one.
4. Turn dark mode on in at least one client and re-read it.
5. Click every link. A typo in a URL or a missing https:// is the most common defect and the easiest to miss, because you know where the link is supposed to go.

Once it passes those five checks, install it with the instructions beside the preview and leave it alone. A signature is infrastructure, not a design project — the version you stop editing is the version that works.

Related Free Tools From Arb Digital

If you are setting up a professional identity from scratch, the business name generator helps with the first decision, the letterhead generator and invoice generator cover the documents that follow, and a QR code generator turns your booking link or vCard into something scannable on a printed card. For the finer details, the character counter keeps a sign-off line from running long, the colour contrast checker confirms your accent stays legible, and the image resizer handles any logo you are required to include. Browse the full free online tools hub for the rest.

Frequently asked questions