# As a condition of accessing this website, you agree to abide by the following # content signals: # (a) If a Content-Signal = yes, you may collect content for the corresponding # use. # (b) If a Content-Signal = no, you may not collect content for the # corresponding use. # (c) If the website operator does not include a Content-Signal for a # corresponding use, the website operator neither grants nor restricts # permission via Content-Signal with respect to the corresponding use. # The content signals and their meanings are: # search: building a search index and providing search results (e.g., returning # hyperlinks and short excerpts from your website's contents). Search does not # include providing AI-generated search summaries. # ai-input: inputting content into one or more AI models (e.g., retrieval # augmented generation, grounding, or other real-time taking of content for # generative AI search answers). # ai-train: training or fine-tuning AI models. # ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF # RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT # AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET. # BEGIN Cloudflare Managed content User-agent: * Content-Signal: search=yes,ai-train=no Allow: / User-agent: Amazonbot Disallow: / User-agent: Applebot-Extended Disallow: / User-agent: Bytespider Disallow: / User-agent: CCBot Disallow: / User-agent: ClaudeBot Disallow: / User-agent: CloudflareBrowserRenderingCrawler Disallow: / User-agent: Google-Extended Disallow: / User-agent: GPTBot Disallow: / User-agent: meta-externalagent Disallow: / # END Cloudflare Managed Content LowFat Apps — Lightweight Open-Source Email Client
Open Source — Self-host or try hosted

A lightweight client
for Gmail.

Full-featured webmail comes with calendar sidebars, embedded chat, and hundreds of megabytes of JavaScript. LowFat strips all that away and keeps just the core — read, write, search, done. An open-source, server-rendered client that stays out of your way.

View on GitHub Try Hosted Version
Google OAuth verification is in progress. You may see a warning screen on sign-in — click "Advanced" then "Go to ..." to continue. Or self-host with your own credentials.

Browser Memory Usage (Typical)

Traditional Webmail ~300 MB
300 MB
LowFat Mail ~60 MB
60 MB
LowFat Mail — Inbox view
Why LowFat

Less is more. By design.

No calendar widget. No Meet popup. No Chat sidebar. Just the email features you actually use, running on minimal code.

⚡

Server-Side Rendered

HTML is rendered on Cloudflare's edge network. Your browser receives lean, ready-to-display pages instead of megabytes of JS.

🧳

Low Memory Footprint

No embedded Meet, no bundled Chat, no add-on panels. Fewer features means far less code in your browser. Leave it open all day.

🌏

Edge-Deployed

Runs on Cloudflare Workers across 300+ cities worldwide. Sub-50ms response times no matter where you are.

🔒

Privacy First

Your credentials stay encrypted in secure KV storage. No analytics, no tracking, no ads. Zero data harvesting.

🎨

Dark Mode

Automatic dark mode that follows your system preference. Easy on the eyes, day and night.

📱

Responsive

Works beautifully on desktop, tablet, and mobile. No app install required — it's just a website.

🔀

Works with Gmail

LowFat doesn't replace Gmail — it complements it. Use LowFat for day-to-day email and switch to Gmail when you need advanced settings like filters or delegation.

Apps

Full-fat features?
We'll pass.

Intentionally minimal clients for people who just need the basics. Self-host or use our hosted version.

Live LowFat Mail

LowFat Mail

Not a full Gmail replacement — a lean alternative for the 90% of the time you're just reading and writing email. Need to set up a filter rule or tweak forwarding settings? Jump back to Gmail anytime. Your account, your choice.

View Source
~60MB Memory Usage
<50ms Edge Response
0 Trackers
Coming Soon LowFat Calendar

LowFat Calendar

View and manage your schedule without the bulk. No Tasks sidebar, no appointment slots — just your calendar, fast and light.

In Development
Q3 Target Launch
~50MB Target Memory

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