Superhuman for replies. Readless for newsletters and RSS feeds. SaneBox for filtering. Inbox Zero without the relapse.
3 focused tools, one clean workflow. No more newsletters clogging your action inbox or “read later” guilt.
The Inbox Zero stack routes every email to the right tool: Superhuman handles replies, Readless processes newsletters into one AI digest outside your inbox, and SaneBox filters cold outreach. Forward newsletters to your @mail.readless.app address, pick a delivery time, and receive a single summary instead of 30 unread newsletters.
30-50% of inbox volume is newsletters you plan to “read later.” They block triage and pile up guilt.
Actionable emails live next to FYI content. You lose the thread, miss replies, and never read the research.
Every time you open a newsletter, you abandon the inbox-zero flow. Regaining focus takes 23 minutes.
The Client (Reply & Action)
Ultra-fast email client for replies, triage, and team communication. Keep your action inbox pristine.
The Processor (Newsletters & Research)
Route every newsletter to Readless. AI summarizes, removes duplicates, and delivers one digest outside your main inbox.
The Gatekeeper (Noise Control)
Filter cold outreach, promos, and low-priority senders before they hit your action inbox.
Superhuman handles replies, scheduling, and collaboration. Every email left inside is actionable.
Newsletter subscriptions go directly to Readless. AI compresses TLDR, Morning Brew, industry memos, and long-form essays into one digest.
Cold outreach and promos skip both inboxes. Process them weekly or never—without hurting Inbox Zero.
| Layer | What Lives Here |
|---|---|
| Primary Inbox (Superhuman) |
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| Processor |
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| Gatekeeper |
|
Superhuman is built for action — fast triage, replies, and keyboard shortcuts. Newsletters are research content that belongs in a separate processing layer. Routing them to Readless keeps your reply inbox pristine and actionable, while a single AI digest delivers every newsletter you subscribed to at your chosen time each day.
The full Inbox Zero stack takes about 15 minutes to set up. Create your @mail.readless.app address, redirect your newsletter subscriptions to it, then add two filters in your email provider to sandbox cold outreach and promos. After that first configuration the stack runs on autopilot with no daily maintenance.
No, SaneBox is optional. Any filtering layer works — Fastmail rules, Gmail filters, HEY screener, or Apple Mail rules. The goal is to dedicate one tool to blocking noise so Superhuman stays focused on replies and Readless stays focused on newsletter processing. Pick whichever filtering tool you already use and trust.
Keep one or two favorite newsletters in your primary inbox if they genuinely spark joy or require quick action. Route the remaining 30-plus newsletters to Readless so they stop sabotaging Inbox Zero. This hybrid approach preserves the newsletters you love reading directly while removing the volume that blocks triage.
Yes. Pro users add RSS feed URLs directly to their digest schedules alongside newsletter senders. Readless fetches new RSS entries, summarizes them with AI, and includes the content in the same digest as your newsletters. This lets you consolidate blogs, Substacks, podcasts, and newsletters into one unified digest outside your main inbox.
Route newsletters to Readless, keep your action inbox pristine, and automate the stack high performers rely on.
Start the Stack