Watch your Gmail inbox sort itself.

Sieve filters out the unwanted emails that clutter your inbox.

Start 7-day free trial

Only mail from strangers is read by AI

Before Sieve
GmailSearch mail
  • ☆Apex RecruitingStaff Engineer role at Series B fintechSolicitor
  • ☆Linear2 unread notifications on Acme board
  • ☆Adrian @ GrowthloopQuick 15 min Tuesday?Solicitor
  • ☆Stripe SecurityVerify your account or it'll be suspendedMalicious
  • ☆MercuryGusto has charged your Mercury card
  • ☆Hartwell CapitalPE growth fund — quick intro?Solicitor
  • ☆FinanceMeeting Notes: Project Alpha
  • ☆EmilyNew NDAs are live in the Dropbox
After Sieve
GmailSearch mail
  • ☆Linear2 unread notifications on Acme board
  • ☆MercuryGusto has charged your Mercury card
  • ☆FinanceMeeting Notes: Project Alpha
  • ☆EmilyNew NDAs are live in the Dropbox

Every day you sort through email you never wanted. Just to find the few that matter. Sieve does the sorting, so you don't.

Phishing and malicious mail get caught too.

Setup

A couple minutes is all it takes.

Choose an account to continue to Sieve
A Alex Riveraalex@northwind.io
Use another account
Sieve gets read-only access to incoming mail.
What should Sieve filter?
Sales pitches Recruiters Cold outreach Newsletters
Keep intros from people I know.
Corrections sharpen it from there.
Maya Chen Re: launch checklist Inbox 3:42p
Adrian @ Growthloop Quick 15 min Tuesday? Solicitor 3:28p
Linear 3 new threads on Acme board Inbox 2:58p
Apex Recruiting Staff Engineer role Solicitor 2:51p
account-alerts Action required: verify now Malicious 12:09p
How it works

Your inbox arrives already clean.

Every email is checked against a series of various key signals.

  • Sender relationship Anyone you've emailed or replied to is trusted and skips the queue. Their mail heads straight to your inbox, with just a quick check of its links against known threats.
  • Authentication Sieve confirms the sender's domain actually sent the message. Forged and spoofed addresses are caught right here.
  • Threat signals Every link and attachment is checked against live threat feeds. Known-bad URLs and malicious files are stopped before they ever reach you.
  • Your preferences You handle the grey areas. A short note on what counts as noise to you, plus the mail you keep or archive, sharpens every call Sieve makes.
  • Labeled Caught mail gets a Gmail label, Solicitor or Malicious, and leaves your inbox. Everything else passes through untouched.

Private and secure

Audited

Reviewed controls and access boundaries.

  • Google security review completed
  • SOC 2 Type II in progress with U.S.-based peer-reviewed auditors
  • Restricted Gmail access reviewed

Encrypted

Data protected at rest and in transit.

  • AES-256 encryption at rest
  • TLS for data in transit
  • Hosted in US-based infrastructure

Controlled Access

Sieve uses Gmail access to classify and label messages, not to act as you.

  • Restricted Gmail access reviewed
  • Internal safeguards constrain email actions
  • Disconnect and delete your Sieve data anytime
Read the full privacy explainer
Pricing

Built for your inbox, or your team's.

Individual
$20204 / month/ year $240
You save $36/yr
  • Second Gmail inbox included free.
  • Server-side classification of every message.
  • Malicious-link screening via Google Web Risk.
  • Correction loop: drag a label back, it learns your taste.
  • Trusted-sender whitelist, auto-built from sent history.
  • Full classification history in your dashboard.
Start free trial now

7 days free, then $20/month. Cancel anytime.7 days free, then $204/year. Cancel anytime.

Teams
Custom
  • Everything in Individual.
  • Admin dashboard for team-wide activity.
  • Shared trusted-sender directory.
  • Shared threat signals across your org.
  • Org-level filtering rules and audit log.
  • Consolidated billing, SSO, and priority support.
Contact us

Centralized billing, admin controls, and shared trust.

FAQ

Common questions

Can I tell Sieve what to filter and what to keep?
Yes. You can write a short plain-English description of your grey zone, such as "I'm not interested in recruiter pitches," and add specific senders or domains to your trusted list (like your accountant). It's guidance for the classifier, not a scriptable rules engine. The fastest correction is just dragging a misclassified message back to your inbox; that's recorded automatically and future classifications improve.
What happens if the classifier gets it wrong?
Drag the message back to your inbox or remove the label. The correction is recorded automatically and future classifications improve. You can also add senders to your trusted list.
Will the AI read mail from my coworkers or people I know?
No. Your own company domain, trusted senders, and anyone already in a thread with you are cleared by deterministic rules before the model runs. The classifier only sees mail from senders you have no relationship with.
Do you read my email content?
Only when a stranger's message needs AI classification: the subject line and a short plaintext excerpt of the body (about 2,000 characters) are sent to the AI for a single classification. It is never used to train any model, and is deleted after 30 days. Your contact list never leaves our servers: name-drops are checked against it locally, and only the result is shared with the model. We store no message content ourselves, except the subject line of mail we flag, which is encrypted and deleted after 30 days; otherwise only metadata like the label and which signal drove it.
What Gmail data do you access?
We request a single Gmail scope (gmail.modify) to read your mail, apply labels, and archive. We read incoming messages and check your sent history to recognize people you already email; we inspect attachment names and types for dangerous files but never download or store them. We never request your Google address book or touch your drafts. Sign-in is direct Google OAuth. Your refresh token is encrypted at rest and used only to classify your mail.
Can I see what was filtered?
Yes. Your account shows every classification from the last 90 days, including which signal drove the decision.
What happens when I cancel?
Canceling stops your subscription: filtering pauses when your subscription ends, and your inbox is left untouched from then on. Re-subscribe anytime to turn it back on. Canceling does not delete your data or disconnect Gmail. Only Delete account, in Settings, erases the data we store; it also disconnects Gmail and cancels billing. Existing Gmail labels stay until you remove them.