Off-Market Deal Flow, Run Through Instantly
For investors and wholesalers, off-market acquisition is a numbers game: thousands of property owners pulled from county records, a fraction of whom are motivated this quarter, and the win goes to whoever reaches them first and most often. Instantly is built for exactly that kind of volume play — unlimited email accounts on paid plans, a simple campaign builder, and a Unibox where every "what's your offer?" reply lands. ColdRelay is the layer underneath: the secondary domains, mailboxes, and dedicated IPs Instantly actually sends from.
This guide covers the acquisition-side workflow — provisioning a mailbox fleet on ColdRelay, bulk-importing it into Instantly, segmenting absentee owners from owner-occupants, and the daily bounce-rate discipline that keeps a skip-traced operation alive at volume.
Why Run Instantly on ColdRelay Infrastructure
Instantly's pitch to volume senders is that email accounts are unlimited on paid plans — connect as many as you want, no per-seat charge on their side. But Instantly doesn't create those accounts. Somebody still has to register the domains, provision the mailboxes, configure DNS, and stand behind the deliverability. That's the gap ColdRelay fills.
Every ColdRelay mailbox runs on isolated Azure tenants with dedicated IPs, with SPF, DKIM, and DMARC pre-configured, and the whole fleet is ready in about an hour. For an investor or wholesaler, that matters for one specific reason: your sending capacity is the constraint on deal flow. When a hot county list lands, the operation that can spin up 50 more mailboxes today — instead of spending a week configuring Google Workspace seats — works the list while it's fresh.
The pairing is additive, not competitive: ColdRelay is the infrastructure, Instantly is the sender on top. Instantly's unlimited-accounts model and ColdRelay's per-mailbox provisioning are made for each other — one removes the software ceiling on account count, the other makes adding accounts a one-click order instead of an IT project.
Visit Instantly →Connecting ColdRelay Mailboxes to Instantly
Provision the mailbox fleet on ColdRelay
Order secondary domains that sound like a person buying houses — a name-based or local-investor brand, never your main company domain. ColdRelay supports 100-150 mailboxes per domain; wholesaling operations typically start at 50-150 mailboxes and scale by the county list. Everything provisions on isolated Azure tenants with dedicated IPs in about an hour, with SPF, DKIM, and DMARC already configured.
Bulk-import via CSV into Instantly
Export your mailbox credentials from the ColdRelay dashboard, then in Instantly go to Email Accounts → Add New → Bulk Import (SMTP/IMAP) and upload the CSV. Instantly connects every mailbox in one pass — and because paid plans don't charge per account, there's no cost penalty for connecting the entire fleet at once.
Cap each account at the ColdRelay send budget
In each account's sending settings, set the daily campaign limit to 2 outbound emails per day. That mirrors ColdRelay's per-mailbox budget — 4 sends/day total, split 2 outbound + 2 warmup. Warmup runs continuously on ColdRelay's side from day one, so skip Instantly's warmup pool and launch the same day.
Build segmented campaigns in the campaign builder
Split your county-record pull into separate Instantly campaigns by owner type before anything sends: absentee owners, out-of-state LLCs, long-tenure owner-occupants, pre-foreclosure. Each segment gets its own campaign with its own copy — an absentee owner in another state reads a cash offer very differently than someone living in the house.
A/Z-test the offer framing, watch analytics daily
Use Instantly's A/Z testing to run multiple variants of the offer framing inside each campaign — "cash offer on 412 Maple" versus "thinking of selling the Maple St property?" versus a no-number curiosity opener. Check campaign analytics every morning: kill losing variants, and treat any campaign whose bounce rate crosses 3% as paused until the list is re-verified.
The Investor and Wholesaler Instantly Playbook
Campaign per owner segment, not per list
A raw county pull mixes absentee owners, inherited properties, tired landlords, and owner-occupants — four different motivations that need four different messages. Splitting them into separate Instantly campaigns also isolates risk: absentee-owner emails skip-trace worse and bounce harder, and you want that showing up in one campaign's analytics, not blended into an average that hides it.
A/Z-test the frame, not the adjectives
Most wholesaler split tests change words that don't matter. Use Instantly's A/Z variants to test genuinely different frames: naming a specific cash number versus inviting a conversation, leading with the property address versus leading with the neighborhood, offering speed ("close in 14 days") versus certainty ("no repairs, no showings"). Let the campaign analytics pick the winner per segment — absentee owners and pre-foreclosure lists rarely respond to the same frame.
Treat bounce rate as a daily gauge, not a post-mortem
Skip-traced data fails gradually, then suddenly. Make per-campaign bounce rate the first number you check in Instantly's analytics each morning: under 2% is healthy, 2-3% means re-verify before the next batch, over 3% means pause the campaign now. Catching a decaying list on day two instead of day ten is what keeps your dedicated IPs compounding reputation instead of bleeding it.
Scale the fleet with the deal pipeline, not ahead of it
Because Instantly doesn't charge per account and ColdRelay provisions in about an hour, there's no reason to pre-buy capacity you can't feed. Size the fleet to your verified list flow: at 2 outbound sends/day per mailbox, a 5,000-owner verified list worked over 30 days needs roughly 80-85 mailboxes. When a new county list clears verification, add the next block of mailboxes that afternoon — capacity should trail the data by hours, not lead it by months.
Typical Investor Outbound Benchmarks (Instantly + ColdRelay)
| Metric | Benchmark | Notes |
|---|---|---|
| Inbox placement rate | 95%+ | Dedicated IPs and isolated tenants, assuming verified lists and the 3% bounce ceiling holds |
| Reply rate (absentee owners) | 1-3% | Most replies are questions about the offer — speed of follow-up in Unibox decides which become contracts |
| Daily bounce-rate pause trigger | 3% | Per campaign, checked every morning in Instantly analytics; re-verify the list before resuming |
| Outbound capacity per mailbox | 2/day | 4 sends/day total per mailbox — 2 outbound + 2 warmup |
| Mailboxes to work a 5,000-owner list in 30 days | ~85 | At 2 outbound/day per mailbox; ColdRelay supports 100-150 mailboxes per domain |
What It Costs: Instantly + 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 — so the marginal cost of working a bigger county list is just the next block of mailboxes.
Instantly is billed separately on its own subscription for the campaign builder, A/Z testing, Unibox, and analytics. Paid plans allow unlimited connected email accounts, so its price doesn't rise as your mailbox fleet grows.
The combination has a useful property for volume senders: Instantly's cost is roughly flat as you scale accounts, so total cost per send is driven almost entirely by mailbox count — which ColdRelay's volume tiers push down as the fleet grows. Capacity gets cheaper per unit exactly when you need more of it.
| 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; Instantly handles the sending, sequencing, and inbox rotation on top.
Frequently Asked Questions
Does ColdRelay compete with Instantly?
No — they're complementary layers of the same stack. Instantly is the sending software: campaigns, A/Z testing, Unibox, analytics. ColdRelay is the infrastructure underneath: the domains, mailboxes, and dedicated IPs that Instantly connects to and sends from. Every Instantly account needs mailboxes from somewhere; ColdRelay is where they come from.
Instantly offers unlimited email accounts — does that mean unlimited sending?
No. Unlimited accounts removes the software-side ceiling, but real capacity is set by the mailboxes themselves. Each ColdRelay mailbox sends 4 emails/day total — 2 outbound + 2 warmup — so a 100-mailbox fleet gives you 200 outbound sends/day. To send more, you add mailboxes on ColdRelay, not settings in Instantly.
What bounce rate should make me pause an Instantly campaign?
Pause at 3%, investigate at 2%. Check per-campaign bounce rates in Instantly's analytics daily — skip-traced and county-record lists decay quickly, and a campaign that was clean at launch can cross the line a week in. Pausing early and re-verifying the remaining list protects the dedicated IPs your whole operation sends from.
How fast can a new county list go from purchase to first send?
Same day, with one non-negotiable step in between: verification. ColdRelay provisions mailboxes in about an hour with DNS pre-configured and no warmup waiting period — warmup runs continuously inside the 4/day budget. So the realistic sequence is: verify the list in the morning, bulk-import any additional mailboxes into Instantly via CSV, and launch the first segmented campaigns that afternoon.