✉️Gmail & Workspace Diagnostic PlaybookVerified October 2026

Gmail: Fix 552 5.2.2 Mailbox Full / Quota Exceeded Bounce Error

Exact Error Message:552 5.2.2 The email account that you tried to reach is over quota and unable to receive messages.

Why This Error Occurs (Root Cause Analysis)

The recipient's Google Account storage (shared across Gmail, Google Drive, and Google Photos) has reached 100% capacity. Google immediately blocks incoming mail until storage is freed or expanded.

Step-by-Step Resolution Guide

Follow these verified steps in sequence to isolate and eliminate the error condition:

1
Visit google.com/settings/storage to inspect storage distribution across Gmail, Drive, and Photos.
2
Search Gmail for oversized emails using search operator: `has:attachment larger:10M` and delete unnecessary attachments.
3
Empty the Gmail Trash and Spam folders immediately (messages in trash continue consuming storage until purged).
4
For Google Workspace domains, allocate additional pooled storage or upgrade license tier from Business Starter to Business Standard.

Prevention Checklist & Operational Standards

🛡️ How to Permanently Prevent Recurrence

Set up automated email retention rules in Google Workspace Admin Console to archive emails older than 7 years into Google Vault.

Frequently Asked Questions

Does resolving this error risk permanent data loss?

No. Following the diagnostic steps outlined above resolves configuration, calculation limits, or authorization credentials without altering underlying raw source datasets or historical records.

How long does Google take to propagate resolved DNS or IAM changes?

Google Cloud IAM permissions propagate globally within 60 to 120 seconds. DNS changes (SPF, DKIM, DMARC) can take between 15 minutes and 24 hours depending on the TTL configured at your domain registrar.

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