Guides
Learn how sift works.
Answer-first guides on cover charges, inbox alternatives, private forwarding, E2E chat, and attention paywalls—written so people and search engines can cite them.
Library
Start anywhere. End with a handle.
Product
What is sift.mx?
sift.mx is a sift handle for email and chat: trusted contacts get through free, unknown people pay a cover you set.
How paid email and cover charges work
Unknown senders pay your cover to get a message delivered to your private inbox. Trusted contacts stay free.
Get paid when unknowns email you
Turn cold email, cold DMs, and low-intent pitches into cover payments—or sift them out—without exposing your real inbox.
Privacy
Hide your real email with private forwarding
Share @sift.mx publicly. Keep your personal or work inbox verified privately—senders never see it.
Rules
Whitelist, pay-to-deliver, or block
Three outcomes for inbound mail and chat: trusted free, cover required, or sifted out.
Getting started
How to claim your sift handle
Claim name@sift.mx, verify a destination inbox, set your cover, and start sharing one handle for email and chat.
Chat
End-to-end encrypted paid chat
Member-to-member sift chat is E2E encrypted. Whitelist free; strangers pay your cover per message.
Creators
Creators: filter collabs and cold pitches
Put a sift handle in your bio so brands and pitch bots pay for access—while managers and partners stay whitelisted.
Founders
Founders: stop cold email spam without going dark
Protect your founder inbox without deleting public contact info. Whitelist investors and teammates; make unknown cold email pay a cover.
Inbox teams
Sales and support: qualify inbound without drowning
Use a sift handle in front of shared inboxes so tire-kickers pay or drop—while known accounts stay free.
Attention economy
Why free attention invites spam
When contacting you costs nothing, strangers over-consume your time. An attention tax restores the price signal.
Compare
sift.mx vs traditional spam filters
Spam filters hide mail. sift.mx changes incentives: unknowns pay a cover or never reach your real inbox.
Email cover charge: what it is and how to set one up
An email cover charge is a pay-to-deliver fee unknowns pay before mail reaches your inbox. Learn how it works and how to set one up with sift.mx.
Compare
Paid inbox alternatives: covers, aliases, and filters
Compare ways to protect a public inbox: spam filters, disposable aliases, and pay-to-deliver covers like sift.mx, and when each fits.
How-to
How to publish an email without inviting spam
Share a public contact address without opening a free firehose: use a sift handle, whitelist trusted senders, and cover-charge unknowns.
Attention economy
What is an attention paywall?
An attention paywall charges strangers for access to your time—via email or chat—while people you trust stay free. How it differs from content paywalls.
Claim your sift handle.
Put a cover charge on your inbox. Trusted contacts stay free. Everyone else puts money where their mouth is.