Field notes
Deliverability, written down.
What we have learned building and running cold email infrastructure: what moves inbox placement, what does not, and why.
Deliverability3 min read
Why cold email lands in spam, and what actually moves the needle
Most deliverability advice treats spam placement as a copywriting problem. It is usually an infrastructure problem, and the fixes are unglamorous.
Read the article- Deliverability2 min read
Mailbox warmup: what the 21-day ramp is actually doing
Warmup is often described as “building trust” without saying what that means. Here is the mechanism, and why the schedule matters more than the volume.
Read the article - Data quality2 min read
Six-stage email verification, explained stage by stage
A verification result is only as useful as the checks behind it. Here is what each stage proves, what it cannot prove, and where the false confidence hides.
Read the article