Cold email has quietly become one of the strongest growth levers for most B2B startups.
Not because it’s fancy.
But because it’s direct.
You’re reaching out to people who could genuinely benefit from what you’re building and starting conversations that can turn into partnerships, customers, or insights you simply can’t get anywhere else.
At its simplest, cold email feels trivial.
Open Gmail. Write a message. Hit send.
But the moment you try to scale everything changes.
As volume grows, the work stops being about conversations and starts being about infrastructure.
Instead of focusing on building relationships, you’re juggling setup and configuration.
And that’s exactly the problem we set out to solve with Deliveryman.
The First Version (And Its Limits)
When we built the initial version, we moved fast like most startups do.
We relied on a few deeply integrated third-party services for parts of the sending infrastructure.
For a while, it worked well.
But there was a trade-off: control.
If something broke, we weren’t fixing the root cause, we were waiting.
If performance dipped, we couldn’t optimize the entire stack, only parts of it.
Eventually, we ran into issues with one of these providers.
We could have patched things up and moved on.
But it forced us to ask a bigger question:
Do we want our customers’ growth to depend on someone else’s infrastructure?
The answer was obvious.
No.
Going Back to First Principles
So we went back to the drawing board.
Over the past few months, we rebuilt Deliveryman with a simple goal:
Own the entire sending stack.
Today, Deliveryman runs on infrastructure we control end-to-end:
- Our own email servers
- Our own IP blocks
- Dedicated IPs for customers
- In-house IP warm-up systems
This wasn’t the fastest path but it was the right one.
Because reliability, deliverability, and long-term performance come from control, not convenience.
Owning the infrastructure changes what we can do and how confidently we can do it.
It means:
- Faster issue resolution
- More predictable deliverability
- Better long-term reputation management
- Continuous optimization without external constraints
Most importantly, it lets our customers focus on what actually drives revenue:
starting conversations and building relationships.
What’s Coming Next
This rebuild is just the foundation. Here’s what we’re rolling out next:
- Expanded domain reputation and advanced warm-up systems for even stronger inbox placement
- Native integrations with Google Sheets, HubSpot, and Salesforce
- A public API so you can build directly on top of Deliveryman’s infrastructure
- Pre-Warmed Dedicated IP BLOCKS (not just IP’s, but the entire Block!) for customers who want to send large volumes (50k-100k+ emails per day)
You can check out our public todo list
The Bigger Philosophy
Every startup eventually faces this decision:
Move fast with dependencies
or
Invest in owning the core layer
There’s no universal right answer but when the core of your product is trust and reliability, ownership becomes non-negotiable.
Rebuilding Deliveryman was a big investment of time and effort.
But it puts us and our customers on far stronger ground for the long run.
And honestly, that’s the kind of trade-off we’ll choose every time.
