If email matters to your business, a short pre-send checklist can prevent a surprising number of spam-folder problems.
Start with the sender domain. If authentication is broken, content tweaks will only get you so far.
A normal business email should be clear, readable, and proportionate. Avoid patterns that make legitimate mail resemble bulk spam.
Mailbox providers watch how recipients respond over time. Senders with good habits earn more trust.
Deliverability gets easier when testing is part of the workflow rather than a panic step after something breaks.
Test important new templates before sending and monitor domain authentication regularly. Weekly monitoring is a practical starting point.
Fix broken authentication first, then sender identity, then high-risk content and subject-line issues.
SamuelGuard gives you a spam risk score, delivery health, authentication checks, blacklist checks, content warnings, and practical fixes you can act on before the next send.