Sender scorecard
Every domain that writes to you gets a score: how often it sends, how often you open it, how often you delete it unread. Sort by worst and clean out a year of clutter in ten minutes.
Private beta — wave 4
Most inboxes aren't full of mail. They're full of notifications, receipts, reminders, and shops that decided you're a relationship. Letterbox25 sorts the difference out before anything reaches your phone.
$2 / month · 30-day refund · cancel from the settings page, no phone call
Four ideas, and no dashboard to learn.
Something short at @letterbox25.com. Forward your old mailbox in and Letterbox25 filters that too, so you can move over at your own pace instead of in one panicked evening.
Anything machine-shaped lands in Quiet instead of your inbox. Nothing is deleted, nothing is bounced. Glance at it once a day for a week and the filter stops guessing.
One button on any message: Retire sender. We find the unsubscribe link, use it, and block the whole domain in case they ignore it. Which they often do.
Ten aliases that forward into the same mailbox. Give one to a shop, one to a conference, one to the thing you only signed up for to get the PDF. Delete it when it turns.
Generous where it matters, deliberately missing everywhere else.
Every domain that writes to you gets a score: how often it sends, how often you open it, how often you delete it unread. Sort by worst and clean out a year of clutter in ten minutes.
A holding area, not a black hole. Everything stays 60 days, is fully searchable, and rescuing one message teaches the filter permanently.
Create them in a second, name them so you remember who got which, and delete one the moment it starts attracting mail you didn't ask for.
We follow the unsubscribe header, confirm the multi-step ones, and keep a log so you can see exactly who was asked to stop and when.
Orders, invoices and booking confirmations get pulled into their own tab with amount and date parsed out. Finding last March's invoice takes one search, not nine.
Optional: hold non-urgent mail and deliver it three times a day. Your phone buzzes for people, not for newsletters.
IMAP, SMTP, JMAP. Use Apple Mail, Thunderbird, Outlook, or whatever you already like. No required app, no lock-in.
One button exports the whole mailbox as MBOX, aliases and filter rules included. We'd rather be easy to leave than hard to quit.
One plan. No tiers designed to nudge you upward.
Standard
or $20 a year. Billed by card, cancelled from a button, refunded in full within 30 days if it isn't for you.
Claim your addressPick an address and we'll open your mailbox when your wave starts.
Yes, and most people do for a while. Forward it in, and everything gets filtered the same way. Switch the address you hand out whenever you're ready.
It will, in week one. That's why nothing is deleted or bounced — it sits in Quiet for 60 days. Rescue it once and that sender is trusted from then on.
The filter works automatically on headers, sending patterns and reputation. No person on the team opens messages, and no advertising profile is built, because there are no advertisers.
Yes, included at no extra cost. Point two DNS records at us and your own domain runs through the same filter.
Because a free mailbox is paid for by someone, and it isn't you. Two dollars keeps the incentives boring: we only make money if you stay, and you only stay if it works.
We add users in batches so the filter stays accurate. The current wait is around ten days.