Freelance Outbound, Run Through Instantly
Not every freelancer wants to be a content creator. Some designers, developers, and writers have no interest in posting daily, commenting on prospects' threads, or playing the social-selling game — they just want a quiet, reliable machine that puts qualified conversations in front of them while they do client work.
That machine is two layers. Instantly is the sending layer: a fast campaign builder, A/Z variant testing, the Unibox unified inbox for replies, and analytics that tell you which offer is landing. ColdRelay is the infrastructure underneath: the secondary domain, the small mailbox pool, and the dedicated IPs that Instantly actually sends from. This guide covers wiring the two together as a pure-email pipeline — no LinkedIn warming, no engagement rituals, just consistent sends and handled replies.
Why Run Instantly on ColdRelay Infrastructure
Instantly is built for exactly this kind of operator: its paid plans let you connect unlimited email accounts, its bulk SMTP/IMAP import takes a CSV and connects a whole mailbox pool in one pass, and its campaign builder is simple enough to set up an evergreen sequence in an afternoon. What Instantly doesn't do is provision the mailboxes themselves or guarantee their deliverability — it sends from whatever accounts you give it, and the quality of those accounts is the infrastructure layer's job.
That's where ColdRelay fits. A freelancer running pure email needs a modest pool — typically 5-10 mailboxes on one secondary domain (ColdRelay supports 100-150 mailboxes per domain, so there's headroom you'll never hit). They provision on isolated Azure tenants with dedicated IPs, fully DNS-configured (SPF, DKIM, DMARC), ready in about an hour, with no warmup waiting period — warmup runs continuously as part of each mailbox's daily budget.
The pairing is additive, not competitive: ColdRelay is the infrastructure, Instantly is the sending and reply layer on top. Because there's no social channel in this stack, the email itself carries the whole pipeline — which makes the deliverability of the mailboxes underneath it the single most important variable you control.
Visit Instantly →Connecting ColdRelay Mailboxes to Instantly
Provision your mailbox pool on ColdRelay
Pick one secondary domain adjacent to your business — if clients know you at janedoe.dev, something like janedoehq.com keeps the connection obvious without risking the real address. Order 5-10 mailboxes; ColdRelay supports 100-150 per domain, but a solo email-only pipeline doesn't need more than a handful. Everything provisions on isolated Azure tenants with dedicated IPs in about an hour, with SPF, DKIM, and DMARC already configured.
Bulk-import the mailboxes into Instantly via CSV
Export your mailbox credentials from the ColdRelay dashboard, then in Instantly go to Email Accounts → Add New → Bulk Import via SMTP/IMAP and upload the CSV. The whole pool connects in one pass — and since Instantly's paid plans allow unlimited email accounts, adding mailboxes later never changes your software bill.
Set sending limits and skip the warmup toggle
Cap each connected account at 2 outbound emails per day in Instantly to mirror ColdRelay's per-mailbox budget — 4 sends/day total per mailbox, split 2 outbound + 2 warmup. ColdRelay runs the warmup half continuously in the background, so leave Instantly's own warmup off rather than double-warming the same accounts.
Build one evergreen campaign per service offer
In Instantly's campaign builder, create one campaign per distinct offer — say, 'website redesign' and 'monthly maintenance retainer' — each a short 3-4 step sequence with your portfolio link as the proof. Write two or three subject and opening-line versions as A/Z variants so the campaign tests itself while it runs. Attach all your ColdRelay mailboxes to each campaign and let Instantly rotate sends across them.
Launch, then run everything from Unibox and analytics
Once live, the operating rhythm is small: top up each campaign's lead list weekly, answer replies in Unibox daily, and check campaign analytics weekly to promote winning variants and retire losers. With 5 mailboxes you have 10 outbound sends/day; the campaigns never end — they just keep eating leads.
The Freelancer Instantly Playbook
Run evergreen campaigns, not launches
Agencies run campaigns in bursts; a solo freelancer should run them like a utility. Build each Instantly campaign once, then never stop it — your only recurring job is feeding it fresh leads weekly. A campaign that's been running for six months with steadily-tuned variants will quietly outperform any clever one-off blast you write between projects.
Let A/Z testing do the copywriting iteration
You don't have a marketing team — so make Instantly's A/Z variants your marketing team. Write three honest versions of the offer line ('I'll fix your checkout flow' vs 'I'll cut your page load in half'), split traffic across them, and check analytics weekly. Promote the winner, write one new challenger, repeat. Within a couple of months the campaign has tested more positioning angles than most freelancers try in a career.
Treat Unibox like office hours
Replies are the entire product of this machine, and at freelancer volume there will be a handful a week — which is exactly why they're easy to fumble mid-project. Block one fixed 15-20 minute Unibox slot daily, same time every day. Every reply gets answered inside 24 hours, every interested prospect gets a concrete next step, and nothing waits until you 'come up for air' from client work.
Skip the social layer on purpose
Email-only outbound trades the reply-rate boost of LinkedIn pre-warming for something more valuable to a working freelancer: near-zero daily attention cost. The trade-off has consequences you design around — your list needs to be tighter and your proof needs to be instant, so every email leads with a live portfolio link and one specific observation about their business. What this stack loses in familiarity, it wins back in the fact that it actually keeps running during your busiest delivery weeks.
Typical Freelancer Outbound Benchmarks (Instantly + ColdRelay)
| Metric | Benchmark | Notes |
|---|---|---|
| Inbox placement rate | 95%+ | Dedicated IPs and isolated tenants outperform shared Google/Microsoft pools |
| Reply rate | 2-6% | Pure email with no social pre-warming — tight lists and a portfolio-link proof carry the number |
| Outbound capacity per mailbox | 2/day | 4 sends/day total per mailbox — 2 outbound + 2 warmup |
| Weekly time investment | 2-3 hours | Lead top-ups weekly, a daily Unibox slot, and a weekly analytics check — the campaigns run themselves |
| Time to first campaign | Same day | ~60 minutes to provision on ColdRelay, plus CSV import and campaign setup in Instantly |
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). At a 5-10 mailbox pool, this stays a small fixed line item, and DNS, dedicated IPs, and isolated Azure tenants are all included.
Instantly is billed separately on its own subscription for the campaign builder, A/Z testing, Unibox, and analytics — and because paid plans include unlimited email accounts, connecting more ColdRelay mailboxes doesn't raise the Instantly side of the bill.
The full stack is one small infrastructure bill plus one flat software subscription — a fixed monthly cost for a pipeline that runs every day, including the weeks you're too deep in client work to think about sales.
| 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 replace Instantly?
No — they're complementary layers doing different jobs. Instantly handles campaigns, A/Z variant testing, sending rotation, and replies in Unibox. ColdRelay provides the underlying domains, mailboxes, and dedicated IPs that Instantly sends from. You use them together: ColdRelay is the infrastructure, Instantly is the sending software on top.
Instantly allows unlimited email accounts — should I connect as many mailboxes as possible?
Unlimited accounts means Instantly never bottlenecks you, but the real capacity unit is the mailbox itself: each ColdRelay mailbox sends 4 emails/day total — 2 outbound + 2 warmup. A freelancer doing researched, portfolio-led outreach rarely needs more than 5-10 mailboxes (10-20 outbound emails/day). Scale the ColdRelay pool only when reply volume proves you can handle more conversations.
Should I turn on Instantly's built-in warmup for ColdRelay mailboxes?
No. ColdRelay mailboxes warm continuously in the background — 2 warmup sends/day per mailbox as part of the 4/day budget — and there's no waiting period before your first campaign. Leave Instantly's warmup toggle off and point it at outbound sending only; double-warming the same accounts adds volume without adding benefit.
How many Instantly campaigns should a freelancer run at once?
One evergreen campaign per distinct service offer — for most freelancers that's two or three. Separate campaigns keep your analytics honest: you can see that the retainer offer out-replies the project offer instead of averaging them into noise. All campaigns share the same ColdRelay mailbox pool, so adding an offer costs setup time, not infrastructure.