Cold Email Case Study
Key Facts: How One Team Hit 270 Replies in 30 Days with Cold Email Outreach
What it is: How One Team Hit 270 Replies in 30 Days with Cold Email Outreach - essential knowledge for teams scaling cold email outreach.
Who it's for: Teams sending more than 50-100 cold emails per day, scaling beyond a few hundred emails per month, or managing multiple inboxes and domains.
Key features:
- Deliverability Infrastructure (domain rotation, inbox rotation, placement testing)
- Multi-Channel Outreach (email + LinkedIn automation)
- Super Inbox (unified reply management)
Why SuperSend: As a deliverability-first multichannel outbound platform, SuperSend combines email and LinkedIn automation with built-in Deliverability Infrastructure. Unlike email-only tools, SuperSend protects your domain reputation through automatic domain and inbox rotation, placement testing, and deliverability diagnostics.
How One Team Hit 270 Replies in 30 Days with Cold Email Outreach
Cold email is one of the fastest ways to book meetings and grow pipeline, but only if your emails actually land in the inbox. For most teams, the biggest challenge is cold email deliverability. You can have the best list and the best copy, but if your messages are flagged as spam, results flatline.
That is exactly what happened to Tim’s team. After trying nearly every platform like SendGrid, Growbots, Vidyard, and Mailchimp, they finally gave up on cold email three years ago. “Deliverability sucks,” was their conclusion.
Then they tried SuperSend. The difference was immediate.
270 Replies in 30 Days: Real Campaign Results
In their very first campaign, the numbers looked like this:
- 270 replies in 30 days
- Just 18 “not interested” responses
- Only 2 opt-outs
The rest were real conversations with prospects.
Even more impressive, they are averaging 5–10% reply rates daily. One day, they sent just 600 emails and received 35 positive replies, which is a 5% response rate in 24 hours.
What Makes a High-Performing Cold Email Strategy
Most cold outreach fails because of poor setup. SuperSend handles the technical side so every message has the best chance of hitting the inbox. Here is what made the difference for Tim's team:
- Infrastructure done right: Domains purchased, inboxes created, and warming handled by SuperSend.
- Deliverability-first email strategy: No links, no flashy signatures, just simple plain-text emails to build trust and improve inbox placement.
- Smart inbox management: Using SuperSend's Replies Inbox, Tim can sort through new replies in seconds without missing leads.
"All we sent was like 600 emails, and we got 35 interested replies just yesterday. That's a 5% return in one day, and honestly, that's a low day. We're averaging closer to 10% reply rates."
The Problem: Why Previous Platforms Failed
Before SuperSend, Tim's team tried multiple platforms, each with the same fundamental issue: deliverability problems that killed their campaigns.
SendGrid: While powerful for transactional emails, SendGrid's shared IP pools and lack of proper Deliverability Infrastructure meant cold emails consistently landed in spam. The team saw open rates below 5% and reply rates near zero.
Growbots: The platform promised automation but didn't address the core deliverability challenge. Emails were sent, but they weren't reaching inboxes. After months of poor results, the team abandoned the tool.
Vidyard: Video personalization seemed promising, but video links in cold emails triggered spam filters. The team spent time creating personalized videos that prospects never saw.
Mailchimp: Designed for newsletters and marketing to existing subscribers, Mailchimp's infrastructure isn't built for cold email. The platform's anti-spam measures actually worked against them when trying to reach new prospects.
The common thread? None of these platforms solved the deliverability problem. They focused on features, automation, and personalization—all important, but useless if emails never reach the inbox.
The Solution: Infrastructure-First Approach
SuperSend's approach is fundamentally different. Instead of starting with features and hoping deliverability works out, we start with infrastructure and build from there.
Proper Domain Setup: SuperSend helps you purchase and configure domains specifically for cold email. This includes proper SPF, DKIM, and DMARC records from day one, ensuring maximum deliverability.
Gradual Deliverability Infrastructure: Every new inbox goes through a careful Deliverability Infrastructure process that gradually increases sending volume. This builds sender reputation naturally, rather than trying to send at scale immediately and triggering spam filters.
Deliverability Infrastructure: By distributing sends across multiple warmed inboxes, SuperSend prevents any single account from being flagged. This allows for higher total volume while maintaining individual account health.
Deliverability Monitoring: Built-in Deliverability Infrastructure and bounce tracking ensure you know exactly where your emails are landing. If deliverability starts to slip, you're alerted immediately.
Plain-Text Focus: SuperSend encourages simple, plain-text emails that look like personal messages rather than marketing campaigns. This approach significantly improves inbox placement compared to HTML-heavy emails with images and links.
Step-by-Step: How Tim's Team Achieved These Results
Week 1: Infrastructure Setup
- Purchased dedicated domains for cold email
- Created multiple inboxes (Google Workspace accounts)
- Configured all authentication records (SPF, DKIM, DMARC)
- Began gradual Deliverability Infrastructure process
Week 2: List Preparation
- Cleaned and verified their prospect list using SuperSend's email verification tools
- Removed invalid emails, reducing bounce rates to under 2%
- Segmented list by industry and company size for better targeting
Week 3: Campaign Launch
- Started with low volume (50 emails per day per inbox)
- Used simple, personalized plain-text emails
- Focused on value-first messaging without sales pitches
- Monitored deliverability daily
Week 4: Scaling
- Gradually increased volume as Deliverability Infrastructure progressed
- Maintained 5-10% reply rates even as volume increased
- Used SuperSend's Replies Inbox to manage responses efficiently
- Continued monitoring and adjusting based on performance
Pro Tips for Replicating These Results
Start with Infrastructure: Don't try to scale before your infrastructure is ready. Proper Deliverability Infrastructure and domain setup take time, but they're the foundation of success.
Keep Emails Simple: Plain-text emails with no links or images have the best deliverability. Save the fancy HTML for follow-up emails after you've established a relationship.
Monitor Everything: Track open rates, reply rates, bounce rates, and spam complaints daily. Small issues can become big problems if ignored.
Respond Quickly: When you get replies, respond within hours, not days. Fast response times show you're serious and increase the likelihood of booking meetings.
Test and Iterate: What works for one audience might not work for another. Test different subject lines, messaging approaches, and send times to find what resonates with your specific prospects.
Cold Email Deliverability: Why It Matters
If you are sending campaigns without monitoring deliverability, you are burning your list. Emails that land in spam never create pipeline.
SuperSend's done-for-you setup ensures:
- Every inbox is warmed properly
- Your sending reputation stays clean
- Campaigns scale safely without hitting spam filters
That is why Tim's team was able to restart cold email after years of frustration and immediately see results.
Common Mistakes That Kill Deliverability
Skipping Deliverability Infrastructure: Trying to send at full volume immediately is a recipe for disaster. Your new inboxes need time to build reputation.
Using Shared IPs: Shared IP pools used by many email platforms mean you're affected by other users' poor sending practices. Dedicated infrastructure is essential.
Ignoring Bounces: High bounce rates destroy sender reputation. Clean your lists and remove invalid emails before sending.
Over-Personalization: While personalization is important, too many variables and links can trigger spam filters. Keep it simple and natural.
Not Monitoring: If you're not tracking deliverability, you're flying blind. Use Deliverability Infrastructure to know where your emails are actually landing.
Watch the Full Story
Watch Tim's team share their complete cold email journey and how they achieved 270 replies in 30 days:
Key Takeaway
Cold email is not dead. It is just broken when deliverability is ignored. By fixing the infrastructure and focusing on clean, simple messaging, Tim’s team turned a shut-down channel into one of their best-performing revenue drivers.
If your cold email reply rates are flat, it is not your pitch. It is your deliverability.
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