# 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.

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

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.

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

Support us on Product Hunt

We're launching soon. Your upvote helps us reach more people who are tired of bloated web apps.

Vote on Product Hunt Every upvote counts

Or star us on GitHub