A signature appears on every message you send, which makes it the highest-frequency piece of communication you own. It should carry identification and contact routes, and almost nothing else.

Why it is worth ten minutes

Count the messages you send in a month. For most small businesses it is hundreds, each one ending with the same block.

Nothing else you publish is seen that often by the people who matter most, which are customers mid-conversation, suppliers, and people deciding whether to work with you.

Despite that, most signatures are either a name and nothing else, or an accumulated pile of images, links, and quotations nobody has reviewed in years.

What it should contain

That is six lines and it covers everything a recipient plausibly needs.

The role line is worth including even in a one-person business, because a recipient forwarding your message to a colleague gives them context you would otherwise have to supply.

What to leave out

Images and logos, which frequently do not load, appear as broken attachments, and add weight to every message. A text signature always renders.

Social icons, which are rarely clicked from email and which add clutter and image dependencies.

Quotations, which date the signature and occasionally cause offence.

Environmental notices asking recipients to consider before printing, which nobody reads.

Long legal disclaimers, which are longer than most messages and legally do very little on ordinary correspondence.

Awards and badges, which age badly and become embarrassing when the award was six years ago.

The reply problem

The reason to keep it short, and it is the argument that persuades people.

A conversation of twelve messages contains your signature twelve times. A long signature turns a short exchange into a document, particularly on a phone where the recipient scrolls past your block repeatedly.

The workable arrangement is a full signature on the first message and a shortened version on replies, which most mail clients support. Where that is not available, a short signature everywhere is better than a long one.

How it renders elsewhere

Worth testing, because a signature that looks correct in your own client frequently does not elsewhere.

Send one to yourself and open it on a phone, in a different mail service, and in plain text mode. Check the number is tappable, the address is a working link, nothing is a broken image, and the layout has not collapsed.

Signatures built as a single image are the worst version of this. They cannot be copied, they do not work when images are blocked, and they are unreadable to a screen reader.

Consistency across the business

Where more than one person sends mail, a template matters.

Three people with three different signatures is the same inconsistency as three different quote documents, and it is more visible because customers see it constantly.

The practical version is one template with the personal details swapped, distributed as text people paste in, plus a note about what not to add. Left to individuals, signatures accumulate personality.

The commercial message question

A point worth understanding rather than guessing at.

Canadian rules on commercial electronic messages apply to messages that promote a business, and an ordinary reply to a customer is generally not the concern. Where a signature adds promotional content, such as an offer or a campaign link, the message takes on a different character.

The practical position is that identification information in a signature is sensible regardless, and that adding marketing content to routine correspondence is worth thinking about rather than doing by default.

The maintenance nobody does

Signatures go stale silently.

An old phone number, a former address, a link to a page that no longer exists, a promotion that ended, or a person who has left. Each of those sits in every message somebody sends until they notice.

Checking them once a year, alongside the rest of the details that go stale across a business, takes minutes and prevents an old number circulating in correspondence for years, which is the same accuracy sweep described in finding the pages that have gone stale.

Frequently asked questions

Why does the signature matter?

It appears on every message you send, which for most small businesses is hundreds a month, seen by customers mid-conversation and people deciding whether to work with you.

What should it contain?

Your name and role, the business name, a tappable phone number, the website, your service area or address, and any licence numbers your trade expects. Six lines.

Why avoid images and logos?

They frequently do not load, appear as broken attachments, add weight to every message, and are unreadable to a screen reader. Text always renders.

Why keep it short?

A twelve-message exchange contains your signature twelve times. Use a full version on the first message and a shortened one on replies where your client supports it.

How should I test it?

Send it to yourself and open it on a phone, in another mail service, and in plain text. Check the number is tappable and nothing appears as a broken image.

What goes stale?

Old numbers, former addresses, dead links, ended promotions, and departed staff. Each sits in every message somebody sends until somebody notices.

West Coast Media Solutions Inc. provides web design, web development, hosting, digital marketing, and business consulting to organisations across Canada, drawing on more than twenty-five years in the field.

Signature that is a single image nobody can copy a number from?

We rebuild it as text that renders everywhere, and check what has gone stale in the version your team is actually using.

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