The first proprietary email warmup method with no warmup filters, scaled human engagement, and Google engagement model training.

Warmup that Google can't tell apart from real customers.

Real Google and Google Workspace accounts, with scaled human engagement, read, reply to and rescue your actual copy, and train Google's engagement model to prioritize your emails and route them to the inbox. No hidden code. No inbox filter. No trace.

Request access See the method

Built for high-volume senders in business funding, homeowner leads, insurance and B2B lead gen. The verticals the spam filters were trained on.

Ink illustration: a field of hundreds of people at desks, each reading a letter; the nearest holds an opened terracotta envelope.
The problem

Every warmup pool works the same way. Google knows.

Warmup tools hide a code in every email and put a filter on every seed inbox that says "never spam this code." No person reads anything. Google sees the code, the filter, and the same pattern across millions of mailboxes.

Tagged warmup pools

what everyone else does
J
Jordan M.
Quick question WX7K2P
Hope you had a great weekend! Just wanted to touch base and…
Inbox filter · subject contains "WX7K2P"
→ Never send to Spam · Mark as important
  • The code is a fingerprint on your domain.
  • The filter does the work. No human ever opened it.
  • Generic chatter teaches Google nothing about your real emails.
Signal discounted at best. Domain pattern-matched at worst.

Ark Warmup

no tags · no filters
D
Dana at Meridian Capital
Working capital for Acme Trucking
Saw you added two trucks this year. We fund fleets your size in 48 hours…
OpenedRead 40sScrolledStarredReplied in threadMoved Spam → Inbox
  • Your real subject line and body. Nothing added.
  • A signed-in Google account does every action in the real interface.
  • No token, no rule, no trace. The email is found by who sent it.
Google sees a person who wanted your email.
The Ark method

Three proprietary layers. None of them is a filter.

Every other warmup tool is a code word and an inbox rule. Ark Warmup replaces both with a proprietary method Google's algorithms read as ordinary human behavior.

Sender-Match
Zero-content matching

Your email carries nothing extra. The reader finds it by who sent it, never by a token in the subject or body. Nothing in your mail says "warmup."

Reader Network
Scaled human engagement

Seasoned Google and Google Workspace identities, each with its own history and habits. They open, read, reply in-thread, star, and pull your mail out of spam, the way a person does.

Placement Grade
Measured at the source

Every email is graded by the account that received it: inbox, promotions or spam, per sender, per day. Senders that slip get more attention until they recover.

Hand-drawn ink illustration: rows of small readers holding letters recede to a horizon under a terracotta sun; one large letter in front carries a terracotta seal.
Scaled human engagement

Thousands of readers. One at a time.

Google weights what people do with an email, not what a rule does to it. Ark Warmup produces that behavior at volume without ever looking like volume.

Scaled human engagement

Every open, scroll, reply and move happens inside Google's own interface. Nothing is flagged by protocol or injected by rule.

Conversations, not auto-replies

Replies land in the thread and no two readers say the same thing. Your sending accounts collect real reply signals too.

Seasoned identities

Every account lives a normal life first: newsletters, notes to friends, weeks of history. Your mail arrives into a real inbox, not an empty one.

Ink illustration: a hand lifts a terracotta letter out of a crumpled paper bin and places it into a tidy inbox tray.
Spam-to-inbox rescue

The strongest signal Google has, done by hand.

When your email lands in spam, a tagged pool never sees it, because the filter already decided. An Ark reader finds it, opens it, and moves it to the inbox. Google records a person overruling its own filter, on your email, from a real account.

Done at scale, across every sender in your fleet, every day.

Your copy, not warmup copy

Warm up on the words that get you filtered.

"How was your weekend?" teaches Google nothing about an email that says "approved for $150,000." Ark Warmup engages with your real subject lines and bodies, so the engagement history Google builds is for the emails you send.

Business funding & MCA Homeowner leads · solar, roofing, windows Insurance B2B lead gen any vertical the filters hate
Inside the engine

See where every email landed. Today, by the hour.

The Ark Warmup console. Every email your senders fire is matched, read, and graded by the account that received it, then rolled up by hour and by sender.

warmup console · today
Ark Warmup console: cards for received, found in Google, inbox and spam, then a by-hour bar chart of where warmup mail landed.
Live console, one afternoon of sending. Found in Google 97% of searched, 74% of it in the inbox, 324 rescued from spam by hand.
a reader's Google Workspace session
A reader account's Google inbox during a session, text blurred: your emails sit between newsletters and notes from other readers.
One reader's inbox mid-session, blurred. Your emails sit between newsletters, follow-ups and notes from other readers.
A real inbox, not a honeypot

Your email lands where real mail lands.

Each reader's inbox already has a life in it: subscriptions they confirmed, threads they started, replies they are waiting on. Your email is one more thing a person opened today.

That is what a tagged pool can never fake: an inbox with history, opened by the same person, from the same place, every day.

placement by sender
Console table: per sender domain, received, found, inbox, spam and never-arrived counts.
Placement per sender, graded by the readers themselves. Not an estimate.
Early results

Same senders. Same copy. Three days.

16%
Day 1 · Sept 11
36%
Day 2 · Sept 12
55%
Day 3 · Sept 14

Inbox share on graded warmup mail. Internal test, one business-funding sending fleet, September 2026.

3.4×
more of the same emails in the inbox by day three
100+
seasoned Google and Workspace readers engaging
0
tags, tokens or filters anywhere in the chain
Side by side

What changes.

Tagged warmup poolsArk Warmup
Hidden code in the emailYes, every sendNone
Filter on every seed inboxYesNone
How mail gets engagedFilter rule, or a protocol flagScaled human engagement
Copy that gets warmedGeneric warmup chatterYour real campaign copy
Spam-to-inboxPrevented by the rule, so no signalRescued by the reader, every time
Placement reportInferredGraded by the account that received it
Built forAnyone sending emailHigh-volume, high-spam-risk verticals
Questions

Before you ask.

Does it work with my sending tool?

Instantly today. Any platform that can send an event when an email goes out can connect. Your warmup campaign runs on your senders with your copy, and Ark Warmup takes it from there.

Will warming on my real copy hurt my domains?

It is the point. The engagement Google records is tied to the emails you actually send. Nothing in the email marks it as warmup, and each reader behaves like the same person every day from the same place.

Google Workspace or consumer Google accounts?

Both. The reader pool mixes consumer Google accounts and Google Workspace seats, because that is what your prospects use.

How much volume can it take?

Reader pools scale to thousands of accounts. Tell us your daily send volume and vertical, and we size the pool to it.

What do I get back?

A placement report per sender, per day: inbox, promotions or spam, graded by the accounts that received the mail. Not an estimate.

Early access

Warm the emails you actually send.

Tell us your vertical and your daily volume. We size a reader pool to your fleet and get you a placement number within the first week.

No public signup yet. We onboard a few fleets at a time.