OutboundOS is a Next.js outbound workspace: find or import a list, clean it, write a sequence, send from the customer’s own SMTP, and handle the reply. Campaigns never leave from a shared warmup pool or the vendor domain.

Launch stays locked until DNS passes, list bounce risk is under 3%, and every step carries {{unsubscribe_url}}. Bounce above 3% pauses the inbox. A reply cancels remaining sends. Analytics count replies and bounces — there is no open pixel.

Who it is for

Agencies and founders who already own a domain and inbox
Teams who want Instantly-style sending without a shared IP pool
Operators who want to run it self-hosted (/install) or as multi-tenant SaaS (HOSTED=true)

What you get

ICP — write the buyer down before the list exists
Inboxes — customer SMTP + IMAP, ramp, send window, daily cap, DNS health
Lists — CSV import (Apollo, Clay, Instantly, HubSpot, ZoomInfo, Sheets), edit/delete leads, suppression that survives re-import
Find leads — Hunter first, Prospeo fills misses (BYO keys); optional Apollo fetch with the buyer’s key
Verify — MX + syntax; MillionVerifier for “inbox exists” when a key is set
Sequences — wait steps, A/B subjects, required unsubscribe token
Campaigns — launch lock that says exactly what is blocking
Inbox — stop-on-reply, OOO re-queue, interested → pipeline
Pipeline — Meeting / Won / Lost
Analytics — reply, positive reply, bounce. No opens.
Operator — workspaces, plans, hosted mode, Super Admin

Hard gates (not settings)

Bounce pause at 3%
Sends after a reply: 0
New inbox ramp starts at 40/day
Postal address required for compliance copy

Two deploy modes

Self-hosted — first visit is /install. Local Mailpit for test sends.
Hosted SaaS — set HOSTED=true. Signup instead of install. Shared workers, isolated workspace data, still their SMTP only.

Stack

Next.js 16, React 19, TypeScript
Postgres 16 + Drizzle
Redis 7 + BullMQ worker (npm run worker must stay up)
Nodemailer + IMAPFlow

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