Cold Email Campaign: Setup, Warmup, and Scaling
Learn how to run a profitable cold email campaign without per-seat SaaS costs. From DNS setup to warmup to automated sequences, the complete playbook for sales teams and agencies.
What is a Cold Email Campaign?
A cold email campaign is a series of automated, personalized emails sent to prospects you've never contacted before — people who didn't sign up for your list and didn't opt in. It's different from bulk marketing email because it's targeted, deliberate, and low-volume.
A single cold email is a one-off reach-out. A campaign is a sequence: first email → wait 3 days → second email → wait 5 days → third email. You might send 100-500 of these sequences per day (not millions like bulk mailers).
The infrastructure matters. Cold emails have strict deliverability rules from Gmail and Yahoo. You need proper DNS records (SPF, DKIM, DMARC) and a warmup period before you send to your full list. Get this wrong, and your emails land in spam. Get it right, and cold email campaigns deliver 30-50% open rates and 5-15% reply rates.
Most teams run campaigns to: qualify leads before sales calls, build pipeline faster than marketing alone, test new markets without hiring sales staff, or fill gaps between marketing campaigns.
How to Execute a Cold Email Campaign (5-Step Process)
From DNS setup to first send, here's what the timeline looks like.
Choose Your App
Select an app to get started.
Configure Your Email Domain (1-2 hours)
Add three DNS records to your domain: SPF, DKIM, and DMARC. These tell email providers your domain is legitimate. Most domains need only 15 minutes to propagate.
Warm Up Your Domain (7-14 days)
Send 5-10 emails per day to warm up your sender reputation. Use a warmup tool or a few test lists. Skip this step and Gmail will flag you as spam immediately.
Build Your Campaign Sequence (2-3 days)
Write 3-5 emails. Set delays between them: 3 days after first, 5 days after second, etc. Personalize with prospect name, company, and a specific reason you're reaching out.
Import Your Prospect List (1 hour)
Export leads from LinkedIn Sales Navigator or your CRM as CSV. Import into your campaign tool. Each campaign should target 500-5,000 prospects (not millions).
Launch and Monitor (Ongoing)
Start sending. Track opens, clicks, replies, and bounces daily. Pause and tweak if bounce rate climbs above 2%. Reply detection triggers follow-ups automatically.
Why Opsily for Cold Email Campaigns
Most cold email tools charge per seat ($25-$100/user/month). A 5-person sales team pays $1,200-$6,000 per year. Opsily changes that equation.
Flat-Rate Pricing, No Per-Seat Fees
Linki costs $20/month on Opsily. That price covers unlimited team members, unlimited campaigns, unlimited sequences. Add a 6th person to your team tomorrow and your bill doesn't change. Run 50 campaigns simultaneously. No overage charges. SaaS tools charge per user, Linki is priced for the tool, not the people using it.
Built-In Warmup and Deliverability
Linki handles email warmup automatically. You configure your domain once, and Linki manages the 7-14 day ramp-up in the background. No separate warmup tool subscription ($40/month). No managing warmup manually. Warmup is included in your hosting cost. Your emails land in the inbox, not spam.
Full Data Ownership on Your Server
Your campaigns, prospect lists, and reply history live on your Opsily server. You own the data. No vendor lock-in. No surprise price increases. No data shared with third parties. If you leave, you take everything with you. Self-hosting means full control.
Built for teams who need reliability
Per-Seat SaaS Pricing (Instantly, Apollo, Lemlist)
$49/user/month (small team plan)
5 team members = $245/month
= $2,940/year
Hidden costs:
- Domain warmup tool: +$40/month
- Integration (Zapier, etc.): +$25/month
- Compliance risk (shared data centers)
Linki on Opsily (Self-Hosted)
$20/month (Small server)
Unlimited users = $20/month
= $240/year
Included:
- Warmup (built-in)
- All integrations (webhooks, APIs)
- Full data ownership, GDPR compliant
Savings: $2,700+/year
Cold Email Tools: Linki vs. Alternatives
Side-by-side look at what you pay and what you get.
Pricing as of June 2026. Instantly.ai per-seat costs subject to change.
Saved per year with a 5-person team
Linki's flat-rate pricing eliminates per-seat costs. Add team members, run more campaigns, increase throughput, your bill stays the same.
See Linki PricingCold Email Campaign Questions
Answers to setup, warmup, sequences, and scaling.
Cold email typically means unsolicited email to prospects you have no prior relationship with. Email outreach is broader: it includes cold email, nurture sequences, follow-ups to warm leads, and multi-channel campaigns (email + LinkedIn together). Email outreach platforms handle all of these. They also track replies and let you segment based on prospect behavior. Cold email tools focus narrowly on email delivery and open rates.
Run Cold Email Campaigns Without Vendor Lock-In
Start with Opsily's Linki managed hosting. Full data ownership, flat pricing, built-in warmup. No per-seat fees. No surprises.