Email signatures
Two things make an email signature look amateur: a logo that arrives as a paperclip on every reply, and a version that collapses into a wall of text for half the recipients.
Two ways to build it
Open a mailbox, then Manage → Signature. Fill in the fields — name, role, company, phone, email, website, one more line — and pick one of four layouts. Or press Write it myself and get the full editor: bold, links, pictures, whatever you want. Switching to free text starts from the layout you had, so you are editing something, not facing a blank page.
The logo
Upload it right there, in the same window. It is the same logo as on your invoices — one place, used in both — and after upload it is shown immediately rather than hidden behind a setting you have to find.
The logo goes out as a link to the picture, not as an attachment. Attached, it would put a paperclip on every reply in a thirty-message thread and carry a few hundred kilobytes each time. The cost of linking is that some mail apps block it until the reader presses "show images" — that is the trade every company makes, including the ones whose signatures you receive.
Both formats, always
Every signature is saved as HTML and as plain text. The plain-text version is what somebody reading in a text-only client sees; without it, their software either drops the signature or shows it as a pile of tags. In free-text mode the plain version is derived from what you wrote, not from the fields, because the fields may be empty.
One signature per sending address
A mailbox that sends as both contact@ and invoices@ has a signature
for each. Change the From address while writing and the signature swaps with it, without
touching what you have typed.
What not to put in it
Anything clever. Mail clients throw away CSS in the head, most of them ignore layout, and Outlook does not understand modern positioning at all. Our layouts use inline styles and, where there is a logo, a table — which is ugly in 2026 and is still the only thing that survives.
Questions people actually ask
Why does my logo not show for some recipients?
Because it is linked rather than attached, and their mail app blocks remote images until they allow them. The alternative is a paperclip on every message in every thread.
Can I paste a signature designed somewhere else?
Yes. Use "Write it myself" and paste it in. We keep the inline styles and the table layout, and strip only things that can execute code.
Can I have a different signature for each of my addresses?
Yes, one per sending identity. Changing the From address while composing swaps the signature and leaves the rest of your message alone.
Next
- Mailboxes, aliases, groups and catch-allWhat costs money, what is free, and when to use which.
- SPF, DKIM and DMARC without the folkloreWhat each one does, what breaks them, and what to actually set.