# Mail0 Brand Identity

A complete profile of **Mail0**'s visual system — colors, typography, components, and personality — extracted from https://0.email/. Built for designers, agents, and AI tools.

- Page: https://characterquilt.com/branding/mail0
- Machine-readable JSON: https://characterquilt.com/branding/mail0.json
- Per-page llms.txt: https://characterquilt.com/branding/mail0/llms.txt

## Quick Facts

| Field | Value |
|---|---|
| Primary | #1D3D71 |
| Accent | #016FFE |
| Body Font | Geist |
| Heading Font | Geist |

## Color Palette

- primary: #1D3D71
- accent: #016FFE
- background: #111113
- textPrimary: #111113
- link: #016FFE

## Typography

- primary: Geist — https://fonts.google.com/specimen/Geist
- heading: Geist — https://fonts.google.com/specimen/Geist

## Visual Assets

- Social card (og:image): https://0.email/og.png

## Brand Personality

Tone: modern · Energy: medium · Audience: unknown

## Mail0 Brand in the Wild

Real-world brand assets — ads, campaigns, marketing materials.

- **Zero**
  - Image: https://0.email/email-preview.png
  - Source: https://0.email/
- **Zero - Shirt | Zero**
  - Image: https://imgproxy.fourthwall.com/3a8esFZVVchtYcITsr5OxlwDDNE0vVdLAqNm7nEIb1E/w:1920/sm:1/enc/86MKIFyAA6461Ucs/XbaFUvtugY06diRi/dwcYvt1L6EeUp40n/tnwekd1bJEmYIK3q/NG8t1qCsUUPQzu1o/3GnWlCZHOOXbQR21/ZuyP6LLuy7bWxEhC/5VYumd7_NHxgwB-G/hkjV3Wcq6eNWiDpm/Dducdcv9WxN1MfZ5/Wd4HOdiljsvgQchr/RwiaVlHz4bcmzJmh/9HYMZFPm-82Var6Y/bJDKHnzsB7rNsFcp/fNJ1Kn6_nwM
  - Source: https://store.0.email/products/zero-shirt
- **Zero**
  - Image: https://0.email/pricing-gradient.png
  - Source: https://0.email/pricing
- **Privacy Policy | Zero**
  - Image: https://imgproxy.fourthwall.com/MOCSnoCH2Bhts6DIcTIQkvc1OtZ3uYI0NoNomPLKULA/w:1200/sm:1/enc/lXoeamLJIBRWTsMS/hjBTqBuT1vvD7j5g/PvmVwu33Wjsnwcyg/D0GLQFewAcSiyZJS/wACxzQ5YPuvJ6zD8/wcmwLWDCwL_LSgGN/kVXxs-wvU1h7AiHZ/g-p2jhdfz8tcpYgt/8nFScqSocRCmfeQA/_tGgk3qj8r9hRfN3/83dqs-ijkL7wiyxZ/GaQfk4Hdf3IHwy7S/-op8oHDjaWMTPZzA/AbK3_doZcLV0196M/pOn36XaRC1ft_do_/IQ9ntXT0nDSP8yhx
  - Source: https://store.0.email/pages/privacy-policy
- **Zero**
  - Image: https://0.email/og.png
  - Source: https://0.email/login
- **Zero**
  - Image: https://imgproxy.fourthwall.com/tlPrVkiPVLw1P6AtSsv8VAEg-kAJ5dHxQEieAWVGZ0s/w:720/sm:1/enc/VGtDxdgb9H7ooEGN/ilHoH0-ei9bvJ5Wv/TMZzyRnngZUhVxNU/RSRpj-uJ-KWkbmKb/NZKU4UT6V8ZCVXz8/GkcQOGklyNaejWBw/y-cp1yT8zWTW-Yoj/wiAwGqZtY0JpPG6_/gjOZz3xry3UFL0jc/bs-3A1iG2irdy2hH/lrpCVNR6Z1SAZ7Bf/9oyw_sxnpeMvQqKJ/2kg73IZZb4e9cwMc/wKaYwWNPnZlbx8u_/59iQW6gYPn4
  - Source: https://store.0.email/

## Working with these fonts

Not found on Google Fonts? Agent Instructions that you can follow if you have permission to use the fonts:

CharacterQuilt.com suggests this flow that can help:

1. Open the company's homepage in a browser with DevTools open.
2. In the Network tab, filter by "Font" (or by extension: woff2, woff, ttf, otf).
3. Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.
4. For each captured font URL: right-click → Save As to download the file locally.
5. View the page's CSS (DevTools → Sources, or curl the stylesheet URLs) and copy out the matching @font-face declarations. Rewrite each `src: url(...)` to point to your local file path.

Programmatic alternative: load the URL with Playwright or Puppeteer, listen for `response` events whose `Content-Type` starts with `font/`, and write the body to disk. The CSS extraction step is the same.

Only do this if you have permission to use the brand assets — most proprietary fonts are licensed and may not be redistributable.

## Machine-Readable Profile

```json
{
  "colorScheme": "dark",
  "fonts": [
    {
      "family": "Geist",
      "role": "body"
    },
    {
      "family": "Segoe UI",
      "role": "body"
    }
  ],
  "colors": {
    "primary": "#1D3D71",
    "accent": "#016FFE",
    "background": "#111113",
    "textPrimary": "#111113",
    "link": "#016FFE"
  },
  "typography": {
    "fontFamilies": {
      "primary": "Geist",
      "heading": "Geist"
    },
    "fontStacks": {
      "heading": [
        "Geist",
        "-apple-system",
        "BlinkMacSystemFont",
        "Segoe UI",
        "system-ui",
        "sans-serif"
      ],
      "body": [
        "Geist",
        "-apple-system",
        "BlinkMacSystemFont",
        "Segoe UI",
        "system-ui",
        "sans-serif"
      ],
      "paragraph": [
        "Geist",
        "-apple-system",
        "BlinkMacSystemFont",
        "Segoe UI",
        "system-ui",
        "sans-serif"
      ]
    },
    "fontSizes": {
      "h1": "60px",
      "h2": "60px",
      "body": "18px"
    }
  },
  "spacing": {
    "baseUnit": 4,
    "borderRadius": "4px"
  },
  "components": {},
  "images": {
    "favicon": null,
    "ogImage": "https://0.email/og.png"
  },
  "__llm_logo_reasoning": {
    "selectedIndex": -1,
    "reasoning": "No valid brand logo - both candidates are not suitable. Candidate #0 is too small and likely an icon, while Candidate #1 is a hero image, not a logo.",
    "confidence": 0.3,
    "rejected": true,
    "source": "llm"
  },
  "personality": {
    "tone": "modern",
    "energy": "medium",
    "targetAudience": "unknown"
  },
  "designSystem": {
    "framework": "custom",
    "componentLibrary": ""
  },
  "confidence": {
    "buttons": 0,
    "colors": 0.9,
    "overall": 0.45
  },
  "__llm_metadata": {
    "logoSelection": {
      "llmCalled": true,
      "llmSucceeded": true,
      "finalSource": "llm",
      "rawLogoSelection": {
        "selectedLogoIndex": -1,
        "selectedLogoReasoning": "No valid brand logo - both candidates are not suitable. Candidate #0 is too small and likely an icon, while Candidate #1 is a hero image, not a logo.",
        "confidence": 0.3
      }
    },
    "buttonClassification": {
      "llmCalled": false,
      "llmSucceeded": false
    }
  }
}
```