> ## Documentation Index
> Fetch the complete documentation index at: https://jetemail.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# 421 4.7.1 Rate limit exceeded

> Sending temporarily blocked on free accounts due to rate limits—wait and retry

### Introduction

You may see this response when connecting or sending through JetEmail SMTP:

**421 4.7.1 Rate limit exceeded. Try again later.**

It means your sending has been temporarily throttled because you’ve exceeded the allowed rate for your account.

### Who is affected?

This applies **only to free accounts**. Paid plans are not subject to this same rate limit.

### What to do

1. **Wait and retry** — You cannot send more mail until the current limit window passes. After that, SMTP will accept traffic again.
2. **Limits are not public** — We do not publish the exact thresholds or time windows. If you hit this error, reduce your send rate or pause until you can connect successfully again.
3. **Upgrade** — If you need higher or predictable throughput, consider upgrading from a free account.

If you believe you’re seeing this in error or need help choosing a plan, contact JetEmail Support.