Success stories
From Spam to Inbox: How a SaaS Startup Achieved 94% Email Deliverability
From Spam to Inbox: How a SaaS Startup Achieved 94% Email Deliverability
Redrob
Client Overview
A fast-growing SaaS startup running high-volume outbound email campaigns to drive demos and trials. Despite investing heavily in personalized messaging and segmentation, their emails were consistently landing in spam.
The marketing and growth team relied on:
Cold email campaigns for pipeline generation
Multiple sending domains to scale outreach
Personalization at scale using sales engagement tools
The intent was strong, but results weren’t matching the effort.
The Challenge
The team wasn’t losing deals - they were losing deliverability.
They faced three critical problems:
1. Emails Landing in Spam Despite Personalization
Even well-crafted, personalized emails were failing to reach inboxes. Open rates dropped, replies slowed, and campaigns underperformed.
2. Poor Visibility Into Sender & Domain Health
The team had no clear way to track:
Spam score fluctuations
Domain reputation issues
Early warning signs before inbox placement dropped
Problems were discovered after campaigns failed - not before.
3. Inconsistent Inbox Placement Across Domains
Some domains performed well, while others were silently flagged, creating unpredictable campaign results and wasted sending capacity.
The Redrob Solution
The startup implemented Redrob’s Spam Score Checker + Domain Health Monitor to regain control over deliverability.
🔹 Real-Time Spam Score Monitoring
Before launching campaigns, the team checked spam scores for every sending domain.
This helped them identify risky configurations and fix issues proactively.
🔹 Domain Health Monitoring
Redrob continuously tracked:
Sender reputation
Domain health signals
Spam flag indicators
This ensured domains stayed healthy over time - not just at launch.
🔹 Data-Backed Deliverability Decisions
Instead of guessing, the team used real data to:
Pause risky domains
Warm up new domains correctly
Maintain consistent inbox placement
The Impact
Metric | Outcome |
Inbox Placement Rate | 📬 94% inbox placement in under 30 days |
Spam Flags | 📉 71% reduction in spam flags |
Email Open Rate | 📈 38% increase due to improved inbox delivery |
Sender Reputation | 🛡️ Stable, healthy sender scores across domains |
Why Choose Redrob
Redrob helps outbound and growth teams ensure their emails actually reach inboxes.
Monitor spam scores before campaigns go live
Track domain health in real time
Protect sender reputation at scale
Eliminate guesswork from deliverability
Because personalized emails don’t matter if they never reach inboxes.
Client Testimonial
“Personalization wasn’t our problem - deliverability was. Redrob helped us identify unhealthy domains, fix spam score issues, and monitor everything in real time. Hitting a 94% inbox rate completely changed our outbound results.”
Growth Lead, SaaS Startup
