Send Cold Email at Scale Without Getting Blocked
You know cold email works, but every time you send more than 50 emails from your regular account, you end up in spam. Instantly lets you connect unlimited sending accounts, warm them up automatically, and send hundreds of personalized cold emails per day without destroying your deliverability.
Tools You'll Need
| Tool | What It Does | Cost | Link |
|---|---|---|---|
| Instantly.ai | Cold email platform with unlimited sending accounts, automated warmup, campaign builder, and deliverability monitoring | $30 – $97/month depending on plan | Get it → |
The Walkthrough
Step 1: Set Up Sending Accounts
What to do: Sign up at Instantly.ai and connect your sending email accounts. The key strategy: use multiple sending domains (yourbrand1.com, yourbrand2.com, etc.) with separate email accounts on each. This distributes your sending volume across accounts so no single account sends too many emails.
Why you’re doing it: Sending 500 emails from one account is a guaranteed trip to spam. Sending 50 emails from 10 accounts looks like normal email activity to inbox providers. Instantly manages all accounts from one dashboard.
What to expect: 30 minutes to connect accounts. Set up 3–5 sending accounts minimum for serious outreach.
Common mistakes: Don’t use your primary business domain for cold email. Register separate domains so if deliverability issues arise, your main domain stays clean.
Step 2: Warm Up Your Accounts
What to do: Enable Instantly’s automated warmup. Warmup sends and receives real emails between accounts in Instantly’s network, gradually building your sending reputation. Let warmup run for at least 2 weeks before launching campaigns.
Why you’re doing it: New email accounts with no history that suddenly send 100 emails per day get flagged as spam immediately. Warmup simulates normal email activity — sends, opens, replies — so inbox providers trust your account by the time you start outreach.
What to expect: 2 weeks of automated warmup. This is passive — Instantly handles it. Don’t skip this step.
Step 3: Build Your Campaign
What to do: Create a campaign with a 3-step email sequence. Upload your prospect list (from Apollo, LinkedIn, or another source). Write personalized email templates with merge fields for name, company, and custom variables. Set sending limits per account per day (30–50 is safe).
Use this prompt to write your cold email sequence: Ask Claude: “Write a 3-step cold email sequence for [your business] targeting [ideal customer description — job title, company type, size]. Email 1: introduce the problem I solve and why it matters to them specifically — under 80 words. Email 2 (Day 3): follow up with a specific result, case study, or data point — under 60 words. Email 3 (Day 7): a short casual note that leaves the door open — under 40 words. No buzzwords. No ‘I hope this email finds you well.’”
Why you’re doing it: A well-structured sequence with follow-ups converts 3–5x better than a single email. Instantly rotates through your sending accounts automatically so volume is distributed evenly.
What to expect: 30 minutes to build your campaign. Test with a small batch (20 emails) before scaling.
Step 4: Monitor Deliverability
What to do: Check Instantly’s analytics daily during your first campaign. Monitor: deliverability rate (should be 95%+), open rate (40%+ is good for cold email), bounce rate (under 5%), and spam complaints (should be near zero). If deliverability drops, pause and investigate.
Why you’re doing it: Cold email lives and dies on deliverability. If your emails land in spam, nothing else matters. Instantly’s dashboard shows you deliverability health in real time so you can catch problems before they escalate.
What to expect: 5 minutes per day. Adjust sending volume, account rotation, or email content based on performance.
Confidence Level
This workflow is Beta — Based on Best Available Knowledge. Instantly.ai is a popular cold email platform known for its warmup and deliverability features.
What to Do If It Doesn’t Work
- High bounce rate: Your prospect list has bad emails. Verify emails with a validation tool before uploading.
- Landing in spam: Check your email content for spam trigger words. Make sure warmup has been running for 2+ weeks. Reduce daily sending volume.
- Need more help? Instantly Support or email us at hello@thenewsbakery.com.