Set up your branded email theme

Set your brand once, and every email @bridge builds — invoices, newsletters, proposals, follow-ups — comes out in your colours and fonts, automatically. No copying hex codes into each email, no design tool. You pick the palette; @bridge applies it everywhere it composes.

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Anything you compose — already on your brand

Your colours, your fontsSet it once, on-brand everywhere

Headings use your heading font, buttons use your brand colour, tinted bands use your accent — without you touching a line of HTML.

Looks like you

@bridge · this band, button and footer all follow your saved theme

Open the theme editor in Thunderbird

The theme lives in @bridge’s settings page inside Thunderbird.

1. Open Thunderbird’s menu (☰) and choose Add-ons and Themes — or go to Tools → Add-ons and Themes.

2. Open the Extensions tab and find atbridge.ai in the list.

3. Click the ⚙ gear (or the ⋯ menu) next to it and choose Options. The @bridge settings page opens in its own tab.

4. In the left sidebar, under Branded Email, click 🎨 Branded Email theme.

Set your brand identity

At the top of the editor is Your brand — the identity that shows in the header band and footer of every branded email:

Field	What it is
Wordmark	Your name or brand, shown in the header band (e.g. Acme Co.).
Tagline	A short line under the wordmark (e.g. fresh coffee, shipped weekly).
Link	Where your brand links to — used in the footer (e.g. https://acme.co).

Leave a field blank to fall back to the atbridge.ai default. Fill them in and every email is unmistakably yours — your wordmark, not ours. This is what a paying plan is for: your brand on your mail, not a generic template.

Set your colours

The editor has nine colour slots. For each one you get a swatch (click to pick) and a hex box (paste an exact brand colour like #0d9488). Here’s what each one controls in a finished email:

Setting	Where it shows up
Brand / primary	The header band, buttons, and links — your signature colour.
Primary (hover)	The slightly deeper shade buttons use on hover.
Text on primary	Text that sits on the brand colour (e.g. button labels) — keep it readable.
Accent	A secondary highlight — a date, a “new” tag, a standout number.
Body text	The main reading colour for paragraphs and headings.
Muted text	Quieter text — footers, captions, “unsubscribe”.
Borders	Hairlines around cards, tables, and dividers.
Background	The card’s page colour behind the content.
Tinted band	The soft fill behind callouts, stat cards, and grouped rows.

Match your real brand

Have brand colours already? Paste the exact hex values into the hex boxes — #rrggbb — instead of eyeballing the swatch. That’s how you make emails match your website and logo precisely.

Choose your fonts

Two picks — a Heading font and a Body font — chosen from a short list of email-safe stacks (the default atbridge.ai brand, Modern, Classic sans, Friendly sans, Elegant serif, and more). Each preset is a full fallback stack, so your email renders cleanly in Gmail, Outlook, Apple Mail, and Android alike — no broken single-font surprises on a recipient’s machine.

Watch the live preview

As you edit, the Preview panel below the controls re-paints in real time — a realistic mock email with a header band, a heading, body copy, a tinted stat card, a button, and a footer. It’s the fastest way to see your palette working together before you save.

Save — and it’s on-brand everywhere

1. Click Save theme.

2. That’s it. Your theme is stored on your machine and applies to every surface @bridge composes from — the @bridge AI Chat pane, the compose popover, any AI connected over MCP, and the atbridge compose CLI.

Changed your mind? Reset to atbridge.ai restores the default theme in one click.

Your AI writes the words — @bridge applies the brand

You never hand-code HTML or paste colours into a prompt. Your AI focuses on the content; @bridge wraps it in your saved theme, deterministically, every time. That’s why setting the theme once is all you need. See Branded Email for the full picture.

No template? @bridge still builds it

Templates are just a convenient head start — they’re not required. Describe any email and @bridge designs it from your words: a clear heading, a table that totals itself, a callout, a button, a chart — laid out and styled in your saved theme. Just tell your AI what you need; there’s no “pick a template” step.

A template only saves you from describing the layout — it’s the same on-brand result either way. Working from the terminal? It’s still one command:

# Compose any email on your brand — from a template or from scratch
atbridge compose render --spec your-email.json

Prefer the command line?

The same saved theme drives the CLI:

• atbridge compose templates list — see every template
• atbridge compose templates show <name> — get a ready spec to fill in
• atbridge compose render --spec your-email.json — render on your brand and open it in Thunderbird
• atbridge compose theme get / set — view or change the theme from the terminal

Full command details are in the CLI reference, and the equivalent tools for connected AIs are in the MCP reference.

Next: pick a starting point from the template gallery.