Keep Your Chain

Never break your email outreach chain again.

Email a list of prospects, follow up automatically inside the same conversation, and stop the moment anyone writes back — even a colleague they forwarded it to.

Coming soon · plans will start at $29 / month

1 Fairing on Halcyon's checkout Mon

Dana, saw Fairing on your checkout. Solid tool, but you're paying per order for a two-question survey…

2 Re: Fairing on Halcyon's checkout Fri

One more on the Claude piece — it sets the whole survey up from one prompt. Want it?

D Dana Whitfield 7:12 AM

Yes — send the prompt. We've been meaning to look at this.

Sequence stopped · engaged
Reply-in-chain, locked Stops on reply Stops on install 0 tracking pixels From $29 / mo
Watch it work

Three sends. One chain. Then Dana says yes.

Scroll through it: follow-ups arrive as replies, a human answers, the sequence stops itself, and your phone gets the draft.

keepyourchain.com · inbox · trycustomerluv.com
Re: Fairing on Halcyon's checkoutLuv SurveyFairing detected
A
Mon · step 1
Dana, saw Fairing on Halcyon's checkout. Solid tool, but you're paying a per-order rate for what's usually a two-question survey. First two months on us — want the prompt?
Message-ID: <8a72…@trycustomerluv.com>
A
Fri · step 2
One more on the Claude piece, since that's the part nobody else in the category has: paste one prompt, the survey is live.
In-Reply-To: <8a72…>   References: <8a72…>
D
Dana Whitfield [email protected]
Today · 7:12 AM
Yes — send the prompt. Fairing's been fine but the per-order thing adds up.
References: <8a72…> <c04e…> → matched to Halcyon Skin
Sequence stopped
Dana at Halcyon Skin said yesDraft ready: "Dana — here it is. Install Luv Survey, open Claude, paste…"
now

The real inbox, one scroll long. Step 3 never sent, because step 3 wasn't needed.

Send

Follow-ups that can only be replies

Your follow-up shows up under the first email, not as a new one. Your prospect sees one conversation — not three strangers.

Under the hood: no parent Message-ID, no send. Subject stays Re: the original; References carries the whole chain.

Stop

Any human reply ends it. So does an install.

A colleague replying from a different address. An out-of-office with a return date. "Talk to Raj instead." A signup in your app with no email at all. Each one is understood, and each one stops or reschedules the chain.

Land

We watch whether your email actually arrives

Every sending domain gets checked daily. If a problem starts, we slow that domain down before it becomes one — and no new domain sends a cold email until its DNS passes and its ramp has started.

Under the hood: authentication pass rate, blocklists, bounces, reply rate, and an enforced ramp.

Scroll the chain

What happens to one prospect, link by link.

One example, start to finish. Halcyon Skin is a made-up store; Fairing is a real survey app that Luv Survey competes with.

Link 1 · found

Halcyon Skin runs Fairing

The storefront scan reads the public site, detects the app, captures the shop's platform ID; a contact-finder you connect names Dana, and her address is verified before she ever enters a sequence.

shop halcyon-skin.myshopify.com detected Fairing (post-purchase survey) contact [email protected] · verified
Link 2 · step one

A note, not a newsletter

Prose. One named competitor. One specific gap. A two-second ask. Zero links. Sent inside the store's business hours from a warmed lookalike domain, never from your real one.

From [email protected] Message-ID <8a72…@trycustomerluv.com> ← stored
Link 3 · step two

Same chain, four days later

The follow-up is a reply. Dana opens one conversation with the first note quoted underneath. Filters see a reply between two parties, not a fresh campaign.

In-Reply-To <8a72…> References <8a72…> Subject Re: Fairing on Halcyon's checkout
Link 4 · reply

Someone answers. Anyone.

Dana replies — or forwards it and Raj replies from an address you never targeted. The reply carries your Message-IDs in its headers, so it matches Halcyon Skin regardless of who sent it. The sequence stops. Sibling tracks at the company pause.

state sequenced → engaged push "Dana at Halcyon Skin said yes" + drafted reply
Link 5 · or install

They signed up without replying

Your app posts a signed install event. Halcyon Skin matches. Cold track ends, welcome flow starts from your real domain. Step 3 never arrives for someone who's already a customer.

POST /events/install {shop, app, ts} → installed
The product

Five screens. Nothing to configure daily.

Click any screen to zoom. You read replies, approve prospects, and edit four short emails. Sending, threading, reply matching and domain health run without you.

Inbox
Keep Your Chain inbox: replies classified engaged, referred, deferred, bounced, with a drafted reply ready to send

One inbox, every domain, both of you

Replies threaded and classified. Reply inline from the address the chain started on. Engaged replies arrive with a draft written from your own product guide — you are the send button.

Pipeline
Pipeline of companies and their sequence state

Company × product, one state

Sequenced, engaged, installed, deferred, referred, bounced, suppressed. One company holds one active track at a time.

Sequences
Sequence editor with reply-in-chain locked

Four steps, previewed on a real row

Per-step reply rate. One template per product × competitor detected. Reply-in-chain is greyed out and on, forever.

Prospects
Prospects with detected apps and verified emails

The first line is already true

Store, detected competitor, country, person, verification. Approve, skip, or suppress.

Domains
Domain health with ramp and signals

One colour per domain

Healthy, throttled, or paused — with every signal that decided it.

0

new threads. Every follow-up is a reply. The editor can't do otherwise.

0

tracking pixels. We never secretly track opens or rewrite your links — it's the fastest way to land in spam. Your read is per-step reply rate.

1

inbox. Every sending domain, every seat, one place. No IMAP to configure, no mailbox to buy — replies land as events.

Rules, not settings

Things it will never do.

Most outreach tools have checkboxes. These are enforced in code, and nobody can uncheck them at 11pm.

If you sell software

They installed without replying? Good.

Your app posts one signed event. The cold track ends and your welcome flow takes over from your real domain.

Every other sequencer

Mon — step 1 lands.

Thu — step 2 lands. They install that afternoon and start onboarding.

Sat — step 3 lands: "wanted to make sure this didn't get buried." They're already paying you. First impression: you don't know who your customers are.

Keep Your Chain

Mon — step 1 lands.

Thu — step 2 lands. They install that afternoon.

Thu, 4:02 PM — install event matches the shop. Track ends. Welcome starts. Pipeline shows installed. Nobody had to tell you.

Example account · illustrative numbers

DMARC pass
0%
Ramp · day 9
0
Sending domains
0
Coming soon

Plans will start at $29 a month.

We're running it on our own outreach first. Leave your address and you get first access when plans open, with founding pricing held for your first year. One email when we open, nothing else — and if we follow up, it'll be a reply to that first email. Obviously.

  • Reply-in-chain sequences, threading invariant locked
  • Stop on reply from any address in the chain
  • Stop on install or signup from your own app
  • One inbox across every sending domain and seat
  • Domain health monitor with enforced ramp and auto-throttle
  • Prospect discovery with competitor-app detection
  • Phone alerts with a drafted reply for engaged threads
From the blog

Reading on the chain.

Sep 13, 2026

Cold email compliance checklist: CAN-SPAM, GDPR and CASL in plain English

What the law actually requires of a B2B cold email, with the checklist we hold our own product to.

Sep 12, 2026

Keep Your Chain vs. Instantly, Smartlead and Lemlist: what's actually different

A fair comparison. The volume tools win on scale; we're built for a founder selling their own product.

Sep 11, 2026

How many cold emails can you send per day? The honest math for 2026

Per mailbox, per domain, per person: the numbers that keep you in the inbox, and how to get to 180 a day safely.

All posts