Brand assets.
Logos, colors, typography, and voice guidelines. Press, partners, and integrators — take what you need.
Mark + wordmark.
The send mark is the brand mark. The wordmark sets mails in Urbanist SemiBold with a superscript ai — no dot. White on dark surfaces, charcoal #424242on light. Don't rotate, recolor, or composite the logo with other marks. Maintain at least 1× the mark-width of clear space on all sides.
Palette.
Three voices: Urbanist, Newsreader, Geist Mono.
The brand voice — wordmark, body, UI. Variable weight 100–900.
fonts.google.com/specimen/Urbanist →The editorial voice — display headlines and annotations, weight 500 with optical sizing.
fonts.google.com/specimen/Newsreader →How we sound.
Plain English, technical without jargon, no sales-deck filler. The brand speaks; specific humans don't.
Use
Avoid
Press inquiries.
Reach out at support@mails.ai. Subject line prefix: [press]. Typical response within 24 hours during launch phase. For partnership inquiries (SaaS integrators, AI framework partnerships), same email — prefix [partner].
Built for agents.
Self-serve at every volume.
Public API opens Q3 2026. Drop ~6 lines into your agent and ship.
$ npm install @mailsai/sdk