Cold email, done right

Stop sending emails
no one opens

OutboundOS writes personalized email sequences for every prospect — AI-crafted, warmup-protected, delivered at scale. Your ICP, our engine.

Start building your campaign → See how it works
3–5×
Reply rate vs. batch email
15+
Personalization signals used
100%
AI-written, human tone
Core capabilities

Everything your outbound
engine needs

From ICP definition to email delivery — one integrated system, no stitching together separate tools.

✍
AI Email Writer
Feed it prospect data — company, role, news, funding — and get a personalized email in seconds. Not templates. Not placeholders. Written copy.
📧
Multi-Step Sequences
Step 1, 2, 3 with configurable delays (Day 0, Day 3, Day 7). AI generates each follow-up from a different angle. Full control over timing.
🔥
Email Warmup Simulation
New mailboxes start at 5 emails/day and ramp up naturally. Protects your sender reputation so emails land in inbox, not spam.
🔄
Inbox Rotation
Multiple mailboxes? OutboundOS distributes sends across all of them, tracking per-mailbox daily limits and warmup scores.
👥
Prospect Management
Add prospects with enrichment data. See their status across the sequence. Know exactly who's received what and when.
🚀
One-Click Launch
Define your ICP, add prospects, click Launch. The system AI-writes every email, queues them, and starts sending. Done.
Process

From zero to sending
in four steps

01
Define your ICP
Set your target industry, job titles, and what makes a prospect a good fit. This shapes the AI's personalization.
02
Add your prospects
Upload names, emails, companies, roles, and any enrichment context. The more data, the better the AI writes.
03
AI writes every email
For each prospect, the AI generates a personalized step 1, 2, and 3 — with unique angles, no generic copy.
04
Launch and iterate
Hit launch. Emails go into the queue with warmup-protected timing. Monitor open rates and adjust sequences.

Your first campaign
is already waiting

Define your ICP, add 10 test prospects, and watch the AI write personalized emails for each one.

Open the dashboard →