First email
Day 1Sent from your own inboxes, on your schedule. Up to 50 a day from each inbox, 10 minutes apart, inside the hours you choose.
Tue 9:14 AM · 1 of 50 today
Plan the route once.Norbelys drives it.
Campaigns send every step on schedule, from your own inboxes, and stop when someone replies.
Campaign, people and times are examples.
The drive, stop by stop
Follow-up
Day 4Same thread, its own timing. Each person’s follow-up waits its own delay, and the weekend stays quiet.
Re: Quick idea · Fri 10:02 AM
New angle
Day 10Test what works. Split versions evenly, by weight, or let Norbelys pick the winner by replies.
Version B · picked by replies
Last touch
Day 16Then it lets them be. After the last step they leave the sequence, and other campaigns wait 72 hours to write.
Next campaign · 72 h at the earliest
Replied
Any dayA reply stops everything. By default they leave every campaign at once. Out-of-office notes don’t count as replies.
Alex replied · stopped everywhere
The rules of the road.
Every control a campaign has, drawn. People, messages and numbers here are examples.
Sends while they’re at their desk.
Pick the days and hours, for the campaign and for each inbox, in one time zone. Off until you set one; the app suggests Mon–Fri, 9 to 5.
MTWTFSS
Mon–Fri 9 AM – 5 PM
New York time
The campaign’s window and the inbox’s must both be open before anything goes out.
Fifty a day, ten minutes apart.
Each inbox sends at most 50 cold emails a day, 10 minutes apart, and stays under Google’s and Microsoft’s limits.
alex@yourco.com32 / 50 today
- 9:00
- 9:10
- 9:20
- 9:30
Let the replies pick the winner.
Give a step up to 50 versions. Split them evenly, by weight, or let Norbelys pick the winner by replies, clicks or opens.
Quick idea for Northwind12 replies
Alex, a quick question21 replies
Version B wins on replies
Rules first, then AI, then you.
Rules catch bounces, unsubscribes and most auto-replies. AI only weighs in where a person may have written, and whatever it isn’t sure about waits for you in Needs review.
- Mail Delivery SubsystemAddress not found.RulesBounce
- Chen LiI’m out of the office until the 14th.RulesOut of office
- Jonas WeberNot this quarter. Try me in January.AIPerson · neutral
- Priya ShahReceived, thanks.AI, unsureNeeds review
Sorting with AI is off until you turn it on
One reply, and they’re out of everything.
By default a reply from a person stops them in every campaign. Stop their colleagues at the same company domain too, if you like.
Alex Morgan
Sounds good. Tuesday at 10?
- Q4 partnersStopped
- Webinar follow-upStopped
- Product launchStopped
- Colleagues at northwind.comOff
New inboxes start slow.
Turn the ramp on and a new inbox starts at 10% of its cap, then grows to the full cap over 8 clean days.
Off until you turn it on
Out of office isn’t a no.
Auto-replies and out-of-office notes are recognized and set aside, so the sequence just carries on.
Chen Li
I’m out until the 14th. Back with answers then.
Set asideNext step goes out on schedule
A first line for every person.
Switch on Personalize with AI for a step and it writes the opening from the fields you allow. If anything goes wrong, your own text goes out.
- Company · Northwind
- News · Opened in Lisbon
AI first line
Congrats on the Lisbon launch, Alex.
Checked before it sends.
Every address gets a syntax and mail-server check right before each send, and every email carries a one-click unsubscribe that never expires.
- alex@northwind.coSent
- sam@northwnd.coNo mail server
- jo@acme.comSent
Unsubscribe One click, never expires
Behind the wheel.
For the people who sign off on outbound: who can do what, what gets counted, and how it’s kept safe.
Four roles, one set of keys.
Owners, admins, members and viewers. The API itself enforces what each one can do.
- Owner
- Admin
- Member
- Viewer
Seven permissions, from reading every reply to deleting the workspace.
Numbers you can defend.
Sent means it really left. Replies leave out auto-replies. Opens and clicks only count if you turn them on.
- Sent
- 1,200
- Replies
- 43
- Bounced
- 6
- Unsubscribed
- 3
Open and click trackingOff
Security, built in.
The controls your IT team will ask about, working in the product today.
- Passkeys and email codes
- Single sign-on with OIDC
- AES-256-GCM for secrets
- Row-level isolation
- TLS to every mail server
- 180-day audit log
Your data, your call.
Export people and their history whenever you like. Delete the workspace and it’s erased 30 days later.
- people.csv
- history.jsonl
Workspace deletedErased in 30 days
Questions,answered.
Still curious? Read the docs
Who can start a campaign?
Owners, admins and members. Viewers see everything but can’t start or change anything. Starting always shows a last check first: who gets it, the first email, the inboxes it sends from and when it begins.
Can we change a campaign while it runs?
Yes. An edit makes a new revision: emails not sent yet use it, and anything already sent keeps the version it went out with. Pausing also holds mail that was already queued.
What happens when someone replies?
A reply from a person stops their sequence in every campaign by default. You can stop their colleagues at the same email domain too. Out-of-office notes don’t count as replies, so the sequence just carries on.
How much can each inbox send?
You decide. Every inbox has a daily cap, 50 by default, and a gap between emails, 10 minutes by default. Norbelys also stays under the daily limits Google and Microsoft set.
Where does our data live, and who can see it?
Each workspace is kept apart in the database with row-level security, mailbox credentials are encrypted, and access follows four roles. Owners and admins can read a 180-day audit log.
Can we take our data with us?
Any time. Export people and their message history as CSV or JSONL. An owner can delete the whole workspace, and it’s erased 30 days later.
Your next customeris one reply away.
Connect an inbox, upload your list and launch your first campaign today. It’s $20 a month, everything included.