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Managed Email Warmup Service for Cold Outreach New Domains Quiet Inboxes

We get your cold outreach inboxes trusted before you have to rely on them. You keep your own sending accounts on Google Workspace or Microsoft 365. We connect them, publish and align SPF, DKIM and DMARC, then ramp each mailbox on its own schedule so volume grows at a pace filters accept. Blocklists and sending reputation are monitored the whole time, and you get a report on every inbox each month.

Cascadia engineer reviewing client systems across dual monitors.

Deliverability someone else owns

What you are actually paying us for

Most cold email problems are not really about the sending tool. They are a missing DKIM signature, an SPF record that quietly broke when you added a CRM, a domain that got pushed too hard in its first week, or a list nobody verified. We own all of that. You send the campaigns, and we make sure the accounts they run on are authenticated, trusted, and watched. Here is what that looks like in practice.

Sending domains are bought separately from your main one, so a bad week never touches the mail your customers rely on. Authentication is set up correctly before the first send and rechecked after any change to your stack. New domains are warmed over weeks rather than days, because volume is the thing providers judge hardest. Lists are verified before they run. Blocklists and reply rates are watched continuously, so a problem surfaces while it is still small enough to fix.

Why teams outsource warmup

Managed warmup versus doing it yourself

Buying a warmup tool takes ten minutes. Running deliverability properly is the part that costs time: authentication records that need revisiting whenever your stack changes, blocklist checks, a ramp schedule per mailbox, and list hygiene before every send. Here is how a self-managed setup compares with handing the whole thing to us.

Someone owns the DNS records

Publishing your SPF record is not something a warmup tool does, and neither is noticing when a new CRM quietly breaks alignment. The DNS side sits with us and gets treated as part of the job, so nothing stays half configured for months.

Ramp pace decided per account

One volume setting for everything you connect is the self-serve default, and it is what gets a new domain throttled in its first week. The curve here is set per mailbox instead, against domain age and against what the reputation signals show.

Blocklist entries get chased

Most tools show you a red indicator and stop there. Ours is a longer job: identify the list, work out what triggered it, fix the cause, file the delisting request, then confirm the removal actually went through.

Lists checked before they burn you

Bounces damage reputation faster than any ramp can rebuild it, and no amount of warmup survives a batch of dead addresses. Recipient lists get verified before campaigns run on the managed tier.

Reporting that admits bad news

A single green score tells you very little. What arrives instead is placement direction for each inbox, plus a plain statement when the numbers are not moving, including when warmup is not the real constraint.

A person, not a help center

Tool support means a ticket queue and a knowledge base article, which is fine until the question is specific to your setup. Message us and you reach someone who already knows how your domains are configured and what changed last week.

Who this actually fits

Who this is a good fit for

Outsourcing this pays off when outreach matters to your revenue but nobody on your team wants to own DNS records and reputation monitoring. If your replies have dropped or your mail is landing in promotions, that is the signal to act. So is a brand new sending domain, since the first weeks are the ones you cannot redo.

How we work with you

How this works once you start

Getting started is mostly us working in the background. We audit your sending domains first and fix what is broken, then bring each mailbox up slowly while you carry on using your normal business email as usual. Once the ramp finishes it settles into monitoring you barely notice.

1

The audit comes first

We start with what you actually have: which domains you send from, how your SPF, DKIM and DMARC records currently read, whether anything is already blocklisted, and how old each mailbox is. You get a straight write up, including the cases where we think warmup is not your real problem. Nothing changes on your live business email while we look, and the review is free.

2

Records get fixed, then the ramp begins

We publish and align the authentication records, correct anything the audit flagged, then connect each mailbox and begin its ramp. Volume climbs gradually rather than all at once, matched roughly one to one against what you plan to send. Your existing business email is untouched throughout, and you do not need to pause any campaigns you are already running.

3

Monitoring, and a report each month

Once accounts are warm we keep watching: blocklist checks, authentication failures, and placement direction for each inbox. You get a monthly summary in plain language covering what moved and what we changed. If something needs a decision from you we come and ask, and if warmup stops being the real constraint we say so rather than quietly billing on.

What it costs, and what is in each tier

Pricing

Cold Email
Inbox Warmup

Monthly Subscription

$130.00
/per month
Up to 5 sending inboxes

DETAILS

Managed warmup for up to five sending inboxes on your own accounts. We audit the domain, publish SPF, DKIM and DMARC, build a ramp schedule for each mailbox, and watch blocklists and sending reputation continuously. You get a monthly report on every inbox. No setup fee, no contract, and your mailboxes stay yours throughout.

Cold Email
Managed Deliverability

Monthly Subscription

$350.00
/per month
Up to 15 sending inboxes

DETAILS

Everything in the first tier across up to fifteen sending inboxes, plus extra sending domains configured and authenticated, seed testing that shows where your mail actually lands, recipient list verification before campaigns run, and DNS remediation when the audit finds problems. A quarterly review covers placement trends and domain health. Built for teams where outreach drives revenue.

Testimonials

Here's what others had to say

Everything we handle

Everything we do, tier by tier

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Sending accounts connected

Each Google Workspace or Microsoft 365 mailbox gets connected and tested both ways before a single warmup message is scheduled against it.
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Domain and DNS review

The audit comes first. We read your existing SPF, DKIM and DMARC records, check that the PTR record resolves forward and back to the same address, and confirm the sending host negotiates TLS. Google has required forward-confirmed reverse DNS and a TLS connection from every sender since February 2024. Domains fail this more often than you would think, usually because a host set the PTR once and nobody revisited it. A ramp built on top of broken records will not hold.
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Ramp schedule built per inbox

One global setting cannot serve a brand new domain and a five year old one at the same time. Every mailbox gets its own volume curve, so the new domains start slow without holding the established ones back.
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Bounce and reply routing checked

A sending account with nowhere to receive looks abandoned to a filter. We trace bounces and replies through to a real destination and confirm they arrive. This is what catches the forwarding rule somebody set up two years ago and forgot about.
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SPF published and aligned

Your SPF record goes up, and then we watch the lookup count. The specification allows ten DNS-querying mechanisms in a single record and returns a permerror the moment you go past it, so every tool that sends on your behalf is spending part of a fixed budget. Domains usually break this by adding a helpdesk and a payroll system without anyone counting.
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DKIM signing enabled

DKIM signing goes on every sending domain, at 2048 bits where your DNS provider supports it. Gmail will not accept a key below 1024.
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DMARC policy set and monitored

DMARC goes up at p=none first, which reports without enforcing anything. We read the aggregate reports for a few weeks to find every system legitimately sending as you, and there is always at least one nobody remembered. Then the policy tightens. Any domain sending more than five thousand messages a day to Gmail is required to have a DMARC record published at all.
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Authentication rechecked on change

Add a CRM and alignment can break silently, so all three records get revisited whenever your stack changes.
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Peer network engagement

Your accounts trade real messages with a network of established inboxes, which builds a sending history where there was none. Worth being precise about what that does. Google does not track opens and says plainly it cannot verify open rates reported by anyone else, so engagement helps by producing a consistent, human-looking sending pattern, not because a filter somewhere is counting who opened what.
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Volume matched to your sending

Warmup volume tracks your live campaign volume at roughly one to one. A mailbox sending forty cold messages a day and four warm ones has a ratio that reads exactly like what it is.
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Gradual ramp to target volume

Accounts reach full sending volume over weeks. Push harder and Gmail answers with a 4.7.28 quota rejection, at which point the correct move is to stop sending for ten minutes, come back on a single connection, and add connections one at a time. Most sending tools do none of that. They retry straight away and dig the hole deeper.
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Pause and resume per inbox

Campaigns stop. People leave. Warmup pauses and resumes on a single mailbox with its ramp progress intact.
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Blocklist monitoring

We check your domains and sending IPs against the major blocklists. Filing the delisting request and chasing it through is our job, not a link we forward to you. A 550 5.7.1 rejection usually means the IP is already listed somewhere and nobody noticed.
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Reputation trend reporting

The monthly report covers placement and reputation direction inbox by inbox, alongside your Postmaster Tools spam rate against the two numbers Google actually publishes: stay under 0.10 percent, and treat 0.30 percent as the line where reclassification starts.
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Authentication failure alerts

Monitoring tells us when SPF, DKIM or DMARC starts failing, normally before anything reaches you. Unauthenticated mail to Gmail comes back as a 5.7.26 rejection, and that code is easy to lose inside a sending tool's bounce log.
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One contact for anything mail related

You message us directly. A dashboard and a help center are not a managed service.
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Additional sending domains configured

Extra sending domains get configured and authenticated so volume spreads across several of them. This matters more than it sounds. Gmail meters DKIM and SPF quota per domain but shares the IP quota across everyone sending from that address, so one domain hitting a wall does not have to take the others down with it.
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DNS remediation included

Conflicting SPF entries, a DMARC record that was never published, a PTR pointing at a hostname that stopped resolving. We fix what the audit turns up.
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Higher daily warmup volume

A larger share of daily warmup capacity, which fifteen inboxes at full campaign volume will use.
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Inbox placement testing

Seed tests go out across the major providers and come back showing where your mail actually landed, promotions and spam folders included. This is the only part of deliverability you get to observe directly. Everything else is inference from bounce codes and reputation dashboards.
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Recipient list verification

Lists get verified before campaigns run. One batch of dead addresses drives bounces and spam complaints at the same time, and Google's 0.30 percent spam rate ceiling does not leave much room to absorb that.
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Quarterly deliverability review

Once a quarter we go through placement trends, domain health, and what has changed in the sending requirements themselves. That last part is not filler. Google and Yahoo both moved the bar in February 2024, and the next change will not arrive with a warning either.

Questions we get asked before people sign up

Frequently asked questions
What is an email warmup service?
Warmup gradually builds a sending reputation on a new or dormant mailbox before you use it for real outreach. Instead of going from zero to hundreds of messages a day, the account exchanges a small and growing number of emails with established inboxes that open and reply. Filters see steady, engaged activity rather than a sudden spike from an unknown sender. We run that ramp for you and handle the authentication records that make it hold.
How long does warmup take before I can send?
Plan on two to four weeks for a brand new domain before you send meaningful volume, and about two weeks for an existing mailbox that has gone quiet. The ramp is deliberately slow because speed is what triggers filtering. Reputation recovery on a domain that has already been damaged takes longer, sometimes six weeks or more, and depends on what caused the damage in the first place.
Do you provide the email accounts?
No. You bring your own Google Workspace or Microsoft 365 mailboxes and we connect them. If you need the accounts themselves, our managed email accounts service supplies and administers them, and the two services work well together. Keeping them separate means you own your mailboxes outright and can take them with you if you ever stop working with us.
Does warmup actually improve deliverability?
It is one factor, and not the biggest one. Independent testing has produced mixed results for warmup on its own, and most of the confident claims come from vendors citing their own customers. There is something else worth knowing here: Google does not track opens at all, and states directly that it cannot verify open rates reported by third parties. So a vendor selling you warmup on the strength of open-rate graphs is showing you a number Gmail never looked at. What demonstrably moves placement is authentication that passes, a spam complaint rate held under 0.10 percent in Postmaster Tools, and volume that climbs at a pace a real business could produce. This service covers those, which is why warmup is a component of it and not the whole of it.
What is the difference between the two tiers?
Inbox Warmup covers up to five sending inboxes with authentication, warmup, blocklist monitoring, and monthly reporting. Managed Deliverability covers up to fifteen inboxes and adds inbox placement testing against real seed accounts, recipient list verification, DNS remediation when the audit finds problems, and a quarterly review of domain health. The second tier suits you if outreach is a primary channel rather than an experiment.
Do you send my cold email campaigns for you?
No. We handle the infrastructure and reputation side, and you or your sales team run the actual campaigns in whatever sending tool you prefer. That split is deliberate. Your messaging and targeting need someone who knows your market, while authentication records and reputation monitoring need someone who does it every day. We do not need access to your campaign content to do our part.
How many inboxes do I actually need?
It depends on target volume. A conservative and durable pattern is around thirty outreach emails per mailbox per day, so reaching one hundred and fifty a day means about five inboxes. Pushing far past that on a single account is what gets mailboxes throttled. Spreading the same volume across more inboxes and more sending domains is safer, which is the main reason the tiers are sized by inbox count.
What happens if one of my domains gets blocklisted?
We monitor your domains and sending IPs against the major blocklists, so in most cases we see a listing before it costs you replies. When one appears we identify which list, work out what triggered it, fix the underlying cause, and file the delisting request. Some lists remove entries automatically once the behaviour stops. Others need a manual submission and a wait, which we handle and track.
Can you repair a domain that already has a bad reputation?
Often, but not always, and we will tell you which before you pay. If the damage came from misconfigured authentication or one bad campaign, cleaning up the records and running a slow rebuild usually works. If a domain has been sending to purchased lists for a long time and is widely listed, the honest recommendation is frequently to retire it and start on a fresh sending domain instead.
What are SPF, DKIM, and DMARC?
They are three DNS records that together prove your mail is really yours. SPF lists which servers may send for your domain. DKIM adds a cryptographic signature that receivers verify. DMARC tells receivers what to do when a message fails the first two, and reports back on attempts. Half configured, they quietly send legitimate mail to junk, which is why we publish and monitor all three.
Do I need a separate domain for cold outreach?
We strongly recommend it. If you send cold outreach from your main company domain and something goes wrong, the fallout hits your invoices, receipts, and everyday business mail. A separate sending domain, ideally a close variant of your brand, keeps that risk contained. Managed Deliverability includes configuring and authenticating additional sending domains for exactly this reason.
Is there a contract, setup fee, or minimum term?
No setup fee, no long term contract, and you can cancel with thirty days notice. Billing is monthly. The one thing worth knowing is that warmup is not a one time purchase. It needs to run continuously for every mailbox you are actively sending from, because reputation decays when the engagement signals stop. Treat it as an ongoing cost of the channel rather than an onboarding step.
What do you need from me to get started?
Admin access to the mailboxes you want warmed, access to the DNS for your sending domains, and a rough idea of your target daily sending volume. The domain and DNS audit comes first and takes a couple of days. We report what we find, fix what needs fixing, then start the ramp. Nothing changes on your existing business email during any of this.
Can I pause the service or change inbox counts?
Yes. We can pause and resume warmup on individual mailboxes without losing their ramp progress, which is useful when a campaign stops or a team member leaves. Moving between tiers takes effect on your next invoice. If you regularly sit between the two tiers on inbox count, tell us and we will price something that matches rather than pushing you into the larger plan.
How will I know whether it is working?
You get a monthly report per inbox covering placement, reputation direction, authentication status, and any blocklist activity. On Managed Deliverability that includes seed testing results showing where your mail landed across the major providers, broken out by inbox and promotions and spam. If the numbers are not moving in the right direction we say so and explain what we think the actual constraint is.
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