---
title: What does INBOX_FULL (Inbox Full) mean?
description: "The **recipient’s inbox is full** and cannot accept more messages. Your SMS was not delivered. **What you can do:** You cannot fix the recipient’s inbox. Remove or retry these numbers later; consider reducing frequency if many recipients have full inboxes. ### More Related…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-does-inbox_full-inbox-full-mean/"
updated: "2026-05-04"
category: "Bulk SMS / Errors & Error Codes"
---

# What does INBOX_FULL (Inbox Full) mean?

The **recipient’s inbox is full** and cannot accept more messages. Your SMS was not delivered.

**What you can do:** You cannot fix the recipient’s inbox. Remove or retry these numbers later; consider reducing frequency if many recipients have full inboxes.

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