Deliverability is a discipline, not a setting
You cannot configure your way into the inbox. Placement is a reputation you build slowly and lose quickly.
Most "our emails go to spam" problems are not bugs. They are the predictable result of treating deliverability as a checkbox instead of a habit.
Reputation is earned at the rate of trust
Mailbox providers decide placement on signals they have watched over time: consistent volume, low complaints, real engagement. A new IP has no history, so it gets no benefit of the doubt — you have to give it one, slowly.
What warming actually is
Warming is sending small, then a little more, to your most engaged contacts first, over weeks — so providers learn that your mail is wanted before you ever send at scale. Skip it and the first big send teaches them the opposite.
- Start with the people who open and click
- Ramp volume on a schedule, not a whim
- Watch complaint and bounce rates like a dashboard, not a quarterly report
The inbox is not a destination you reach. It is a standing you keep.
The quiet work behind the loud numbers
No campaign metric survives a spam folder. Deliverability is the unglamorous half of every result — and the half most teams notice only once it is gone.
Hung Mai is a Germany-based freelance consultant for Digital Operations & Transformation, working remotely with international B2B clients.
