---
title: "Mail arrives in spam despite passing authentication"
description: "Why authenticated mail can still land in spam and what to check next."
translationKey: "ts-email-spam"
tags: [spam, reputation, troubleshooting]
publishedAt: "2026-05-01"
lastReviewedAt: "2026-05-19"
indexable: true
faq:
  - question: "Can mail still land in junk if SPF, DKIM, and DMARC pass?"
    answer: "Yes. Mailbox providers weigh reputation, engagement, content signals, and organizational filters beyond authentication results alone."
  - question: "What should I check first when a message is filtered?"
    answer: "Start with sender reputation and mailbox rules, then review message headers to confirm authentication and filtering clues."
---
> **Canonical:** https://formreceipt.com/docs/troubleshooting/email-messages-in-spam

## Implementation checklist

1. Confirm SPF, DKIM, and DMARC pass for the filtered message.
2. Compare subject/body against providers' bulk mail guidance.
3. Reduce sudden send-volume spikes where possible.
4. Check organization-level allowlists and quarantine policy.
5. Ask IT/admin to review mailbox-side rules and reputation signals.

## Why this still happens

Authentication verifies sender identity, but inbox placement also depends on trust and engagement signals.

## If filtering continues

Coordinate with your mail administrator to adjust sender trust settings and monitor changes after each adjustment.