Cold email agencies are the most rented part of B2B sales: their domains, their inboxes, their copy, their reply inbox. This page compares what a cold email service delivers month to month with what changes when the same machinery is built inside your business and left there.
A cold email agency runs infrastructure at scale. Dozens of sending domains, hundreds of warmed inboxes, a database subscription, a verification tool, a sending platform, and copywriters producing sequences from a framework that has worked across their client list. You give them your target market and your offer. They send tens of thousands of emails a month on your behalf and forward the interested replies, or book the meetings directly. The retainer commonly sits in the low-to-mid thousands a month.
The reason agencies can do this at all is that the infrastructure is theirs and shared. Your emails go out from domains they own, warmed on a schedule they control, with a sender reputation that every client on the same pool affects. When a campaign for another client trips a spam filter, yours can feel it. When you leave, the domains stay behind, and so do the sequences that finally got replies and the list of everyone who has ever answered you.
It is a sensible service to buy for a short experiment. It is an expensive way to never own the channel.
| Line item | Cold email agency | The Outbound Install |
|---|---|---|
| Fee | Monthly retainer, ongoing | One fee, paid once. No retainer |
| Sending domains and inboxes | Agency owned, shared reputation | Bought, warmed and held in your name, never shared |
| Running cost | Inside the retainer | $521 a month at 10,000 emails, paid to the providers directly |
| Copy | Framework used across clients | Written from your company brain, in your voice, approved by you |
| Verification | Agency's tool, agency's threshold | MillionVerifier and BounceBan on every address before it sends |
| Channels | Email, sometimes LinkedIn as an upsell | Email and LinkedIn, replies sorted into Slack |
| Reply history and learnings | Theirs | Yours, in your sheet and CRM |
| Leaving | Start from zero | Not applicable. You own it |
At 10,000 emails a month the conservative funnel on the costs page turns $521 of tools into five meetings and two closed deals. The same volume from an agency costs a multiple of that every month, on infrastructure you will never own.
Stage one writes your company brain, positioning, ideal customer, offer and voice, so every sequence starts from your actual business rather than a template. Stage two connects the tools you already use, with lists in Sheets, deals in Attio or HubSpot and replies in Slack. Stage three builds target lists of accounts and named people, deduped against your CRM, with every email verified before anything sends.
Stage four decides who gets written to this week using buying signals: job changes, funding, hiring, social engagement and ninety more you can switch on. Stage five sends the campaigns through Smartlead, by email, and HeyReach, by LinkedIn, from domains that were bought and warmed in your name. Replies are sorted automatically so the good ones get a fast answer.
What kills deliverability is sending unverified lists from your main domain at volume. The install provisions separate sending domains, warms them properly and verifies every address, so your primary domain is never at risk. Live results from Smartlead, and the replies that came back, are on the does-it-work page →
Hire a cold email agency if you need volume in two weeks and cannot wait for domains to warm, if nobody on your side will read a reply, or if you are testing a new offer and want to know quickly whether the market responds. A short engagement to answer a single question is money well spent.
Build the engine if cold email is going to be part of how you sell for years, if you want the reply data and the learnings to compound in your own CRM, or if you have been through an agency already and remember leaving with nothing. It is also the better choice when your offer is specific, because a system trained on your positioning outperforms a framework built for a client list.
If the engine does not generate qualified meetings in ninety days from launch, the fee comes back and the domains, the accounts and the system stay with you.
Retainers commonly run in the low-to-mid thousands a month and continue for as long as you want emails sent. The install is a one-off fee, plus about $521 a month in tool costs at 10,000 emails, paid directly to the providers.
Bad cold email is dead, and always deserved to be. Unverified lists sent from a main domain at volume get filtered. Separate warmed domains, verified addresses and copy written from your real positioning still get replies, which is what the does-it-work page shows.
Yes, and the install buys and warms them for you in your name. Domains are a one-off cost, $170 at the 10,000-email tier, listed on the costs page.
No, and you would not want it to. Their domains carry their pooled reputation. The install provisions fresh domains that only your campaigns ever use.
The costs page prices four tiers from 10,000 to 100,000 emails a month. Volume is a function of how many mailboxes you run, and the rest of the stack is mostly flat-rate.
Thirty days to install. Ninety days to prove it. If it doesn't generate qualified meetings, full refund.
One fee, paid once, in exchange for a case study. Tool costs go directly to the providers, and nothing recurring comes from us.