Deliverability
Health score, blacklist monitoring, inbox placement, what to do when scores drop.
How the infrastructure health score works
The 0-100 score, what inputs it uses, how to improve it.
5 min read·Updated Apr 8, 2026
Blacklist monitoring across 6 domain blacklists
Which blacklists InboxLee monitors, why domain lists only, and what to do on a hit.
5 min read·Updated Apr 4, 2026
Seed list placement tests
What a seed test measures, what InboxLee runs today, and how to run one yourself.
4 min read·Updated Apr 1, 2026
Reputation recovery playbook
When a domain or mailbox loses reputation, here is the path back.
6 min read·Updated Mar 26, 2026
Reading Gmail Postmaster Tools
Connecting Postmaster Tools, what each metric means, when to act.
5 min read·Updated Mar 22, 2026