Case Studies

How Marblism Built An Outbound Engine To Match Its AI Workforce

Marblism sells businesses an AI workforce rather than an AI assistant. Instead of one general-purpose bot waiting on prompts, customers get a set of specialised agents, each trained on a single business function and left to run it: inbox handling, social publishing, lead generation, customer support, operations.

Operating at that pace put unusual demands on their own outbound. Whatever they ran had to keep up with the agents, which meant four things holding at once: high-quality data, hundreds of warm mailboxes, multi-channel execution, and deliverability stable enough to take the volume. Assembling that from dozens of disconnected tools would have reintroduced exactly the overhead their platform exists to remove.

They found that solution in The Forge Stack.

“Salesforge has helped us a lot with our retargeting, even though we operate in a B2C environment. It has already generated new opportunities for us and we are still experimenting with different setups. Our infrastructure is solid, and the Salesforge team is always willing to jump in and give advice whenever we need it.”

Jesus Malo
Head of Marketing at Marblism

The Results

With The Forge Stack powering their workflows, Marblism’s team overcame their scale limits and achieved consistent outbound performance across all verticals.

Their campaigns deliver strong engagement metrics week after week:

Open rates consistently over 50% even on cold-intent targets
Click rates reaching 20–29% on agency and consultant segments
Reply rates ranging 0.6–1.3% across high-volume campaigns
Zero deliverability disruptions across thousands of contacts

Why It Works

Speed and automation are Marblism's whole model, so the outbound engine had to behave the same way. With The Forge Stack the pieces work in sync - Salesforge for execution, Leadsforge for data, Mailforge for infrastructure, and Warmforge for deliverability - and none of them needs babysitting.

This alignment allows Marblism’s AI agents to operate without interruptions or manual fixes, maintaining high output even during heavy-volume weeks. The system doesn’t just support their scale; it amplifies it.

The Takeaway

Marblism’s team built an outbound engine that matches the ambition of their AI platform - fast, adaptable, and capable of managing thousands of prospects per day.

With The Forge Stack, they now operate outreach with confidence: reliable mailbox health, powerful data sourcing, and scalable multi-channel sequences all working together to support their AI agents and client growth.

“Working with Salesforge has made scaling a lot simpler for us. The deliverability stays stable, the volume is easy to push, and the entire stack removes friction from our operations. It gives us a foundation we can actually build on.”

Jesus Malo
Head of Marketing at Marblism

Scale Your Outbound the Smart Way

Outbound at volume needs execution, data, infrastructure and deliverability behaving as one system rather than four subscriptions. The Forge Stack covers all four, whether you are running one campaign or a hundred.
Get 100 Free Credits

Every Aspect of Successful Outreach, Covered ✅

Easily automate your human team’s work and blend in AI Agents to maximize sales pipeline coverage.
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Without the Forge
Find prospects
Enrich with emails, LinkedIn & phone numbers
Identify intent signals
Set up domains & mailboxes
Connect LinkedIn accounts
Boost deliverability
Monitor domain reputation
Maximize your mailbox Heat Score™
Set up sequences
Send emails & LinkedIn messages
Monitor & manage replies
Track & analyze performance
Reply to emails & LinkedIn messages
Schedule follow ups across channels
Book meetings and calls
Pipeline
Close the Deal