Stop Renting Lists — Query the Database for Your Exact Client
Most accounting firms that try cold email fail at the list, not the copy. They buy a scraped directory of 'local businesses,' blast it, and wonder why a payroll pitch landed on a sole proprietor with no payroll. A niche practice doesn't serve 'local businesses' — it serves restaurants with 10-50 staff, or contractors doing $1-10M a year, or e-commerce sellers who just crossed into multi-state sales tax. Those are database queries, and Apollo is the database.
Apollo's B2B contact data lets a firm filter companies by industry, employee headcount, revenue band, location, and timing signals like active hiring or a recent founding date — then push the matching owners and controllers straight into sequences. ColdRelay is the layer underneath: the secondary domains, mailboxes, and dedicated IPs Apollo actually sends from. This guide covers how to wire the two together and turn a niche practice's ideal-client profile into a standing, self-refreshing prospect list.
Why Run Apollo on ColdRelay Infrastructure
Apollo solves the front half of outbound for an accounting firm: finding the right businesses. Its filters turn a vague ICP into a precise query — industry plus headcount plus revenue band plus geography — and its sequences handle the sending logic, with email, call, and LinkedIn steps in one flow. What Apollo doesn't do is provision the domains and mailboxes those sequences send from, or build their deliverability. That's the infrastructure layer's job.
ColdRelay handles that layer. Instead of linking your firm's primary mailboxes — the ones carrying client portals and IRS correspondence — into Apollo, you provision dedicated mailboxes on isolated Azure tenants with dedicated IPs, with SPF, DKIM, and DMARC pre-configured, ready in about an hour. There's no warmup period to wait out before sending: warmup runs continuously as part of each mailbox's 4 sends/day budget (2 outbound + 2 warmup), so the day your Apollo search returns its first 800 matching restaurants is the day you can start sequencing them.
The pairing is additive, not competitive: Apollo is the database and sequencing layer, ColdRelay is the infrastructure underneath. You keep Apollo's filters, personas, and multi-step sequences — you just point them at mailboxes built to land, where 95%+ inbox placement means the precision you bought in the list actually reaches an owner's inbox.
Visit Apollo →Connecting ColdRelay Mailboxes to Apollo
Turn your ideal client into a saved persona and search
Before provisioning anything, define the niche in Apollo's terms. Build a company search with the exact filters your practice serves — industry: restaurants, employee count: 10-50, location: your metro — then layer a persona on top for the people you want: Owner, Controller, Office Manager. Save both. The size of the matching list is what tells you how much sending capacity to buy, so the search comes first.
Provision mailboxes on ColdRelay sized to the search
Pick secondary domains adjacent to your firm's name — never the primary domain your clients know — and size the order to the list Apollo returned. A search matching 1,500 companies works comfortably on 25-40 mailboxes; ColdRelay supports 100-150 mailboxes per domain, so even a multi-niche practice fits on one or two domains. Everything provisions on isolated Azure tenants with dedicated IPs in about an hour, with SPF, DKIM, and DMARC already configured.
Link the mailboxes under Settings → Mailboxes in Apollo
Export the mailbox credentials from the ColdRelay dashboard, then in Apollo go to Settings → Mailboxes and link each ColdRelay mailbox via SMTP/IMAP. Each one becomes a sending account Apollo can rotate sequence sends across, so no single address carries the whole campaign's volume.
Set per-mailbox daily send limits to 2 outbound
In each linked mailbox's settings, set Apollo's per-mailbox daily send limit to 2 outbound emails per day. That mirrors ColdRelay's per-mailbox budget — 4 sends/day total, split 2 outbound + 2 warmup — with the warmup half running continuously on ColdRelay's side. Leave any additional warmup off for these accounts; the budget is already spoken for.
Build the sequence and feed it from the saved search
Create an Apollo sequence with 3-4 email steps, and — because the database often includes direct dials and LinkedIn profiles — add a call step or LinkedIn touch for prospects who open twice but don't reply. Push contacts from your saved search into the sequence, and revisit the search weekly: businesses that newly match your filters appear as net-new results, turning a one-time list into a standing lead flow.
The Accounting Firm Apollo Playbook
Define the ideal client in filters, not adjectives
'Small businesses in our area' is not a target — it's a shrug. Translate the clients your practice actually keeps into Apollo filter values: industry codes, an employee-count range, a revenue band, a radius. A construction-niche firm targeting contractors at $1-10M revenue with 5-30 employees will pull a list where nearly every record can plausibly become a client — which is why filter-built lists out-reply scraped directories before a word of copy changes. If you can't express your niche as a query, the niche isn't defined yet.
Treat a bookkeeper job posting as a buying signal
Apollo's hiring signals show which companies are actively recruiting — and a business posting for a bookkeeper, staff accountant, or controller has just announced that its finances outgrew its current setup. That's the exact moment an outsourced accounting or CAS pitch beats the hire: 'before you pay a salary plus benefits for that bookkeeper role, here's what a fractional team costs.' Filter your saved search by active finance-role postings and run those prospects in their own sequence with that specific opener.
Catch entities while they're new
Use Apollo's founded-date filter to build a segment of companies formed in the last 6-12 months in your niche. A new restaurant or contracting LLC hasn't bonded with an accountant yet — there's no incumbent to displace, just a founder doing their own books at midnight. The pitch is setup, not switching: entity-structure review, clean chart of accounts from day one, quarterly estimates before the first surprise. New-entity segments are smaller than the main list, but they convert without the loyalty objection every other accounting cold email fights.
Refresh the search, don't re-blast the list
The discipline that separates a database-led practice from a list-blaster: your saved searches are living queries, not one-time exports. Each week, pull only the net-new matches — businesses that just crossed 10 employees, just posted the finance role, just got founded — and feed those into sequences. The base list that already ran stays ran. This keeps every send aimed at someone whose fit is current, keeps volume steady and matched to your mailbox capacity at 2 outbound sends per mailbox per day, and means your pipeline refills from the filter itself instead of from another purchased list.
Typical Accounting Firm Outbound Benchmarks (Apollo + ColdRelay)
| Metric | Benchmark | Notes |
|---|---|---|
| Inbox placement rate | 95%+ | Dedicated IPs and isolated tenants — precision targeting is wasted if the email never reaches the owner's inbox |
| Reply rate (filter-built niche lists) | 3-6% | Industry + headcount + revenue-band lists out-reply scraped local directories on identical copy |
| Signal-segment reply lift | 1.5-2x | Hiring-signal and new-entity segments vs. the base niche list — timing does the persuading |
| Outbound capacity per mailbox | 2/day | 4 sends/day total per mailbox — 2 outbound + 2 warmup |
| Time to first campaign | Same day | ~60 minutes to provision on ColdRelay, plus persona and search setup in Apollo |
What It Costs: Apollo + ColdRelay
You pay per mailbox per month for the infrastructure, with volume tiers that drop as you scale (see the table below). DNS, dedicated IPs, and isolated Azure tenants are included — and because mailbox count is sized to your saved search rather than guessed, most niche practices land in a modest, predictable tier.
Apollo is billed separately on its own subscription for database access, contact credits, personas, and sequences — priced per its current plans.
One bill scales with sending capacity, the other with data access. The split is clean: Apollo tells you exactly who to email, ColdRelay makes sure the email lands — and a single retained bookkeeping client typically covers months of both.
| Mailboxes | ColdRelay price / mailbox / month |
|---|---|
| 1–199 | $1.00 |
| 200–999 | $0.85 |
| 1,000–4,999 | $0.70 |
| 5,000+ | $0.55 |
Each mailbox sends 4 emails per day — 2 outbound to prospects + 2 warmup. ColdRelay provisions mailboxes on isolated Azure tenants with dedicated IPs; Apollo handles the sending, sequencing, and inbox rotation on top.
Frequently Asked Questions
Does ColdRelay replace Apollo?
No — they're complementary layers, not competitors. Apollo provides the contact database, filters, personas, and sequences with email, call, and LinkedIn steps. ColdRelay provides the underlying domains, mailboxes, and dedicated IPs that Apollo sends from. You use them together: data and sequencing on top, infrastructure below.
Can't we just link our firm's existing mailboxes into Apollo?
You can, but you shouldn't. Your primary domain carries client portals, e-signature requests, and IRS correspondence — none of which can afford the reputation risk of cold volume. ColdRelay mailboxes run on separate secondary domains, dedicated IPs, and isolated Azure tenants, so outbound stays completely walled off from the domain your clients depend on.
How many mailboxes do we need for an Apollo-built list?
Size it from the search. At 2 outbound sends/day per mailbox (of the 4/day total, 2 outbound + 2 warmup), 25 mailboxes works through roughly 1,500 prospects a month on a multi-step sequence — about the size of a well-filtered niche list in a mid-size metro. Practices running several niche searches scale toward 100-150 mailboxes per domain and add domains as the searches grow.
Do we have to warm up before sequencing the list Apollo found?
No waiting period. ColdRelay mailboxes provision in about an hour with SPF, DKIM, and DMARC pre-configured, and warmup runs continuously as 2 of each mailbox's 4 daily sends rather than as a phase you sit through. The same day your saved search returns its matches, the sequence can start sending — just keep Apollo's per-mailbox daily limit at 2 outbound so the budget holds.