> For the complete documentation index, see [llms.txt](https://support.docstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.docstudio.com/admin-panel/billing/envelope-sending-limits.md).

# Envelope Sending Limits

DocStudio can apply separate billing rules to different envelope sending sources.

An envelope can be sent in one of the following ways:

<table><thead><tr><th width="197">Sending source</th><th>Description</th></tr></thead><tbody><tr><td>Quick send</td><td>The user sends an envelope through Quick send or one-time send.</td></tr><tr><td>Template send</td><td>The user creates and sends an envelope from a saved template.</td></tr><tr><td>Form send</td><td>The user creates and sends an envelope from a form.</td></tr></tbody></table>

Each sending source can have its own billing counter, limit, and pricing rule.

This allows the account to use different billing conditions for:

* Quick send envelopes
* Envelopes sent from templates
* Envelopes sent from forms

DocStudio also keeps the general envelope sending counter. This means that the system can check both the total number of sent envelopes and the number of envelopes sent through a specific source.

If a user reaches a billing limit for a specific sending source, DocStudio blocks the send action and shows the standard Billing limit reached modal window.

The sending source is also available in analytics, so account usage can be reviewed by source:

* Quick send
* Template send
* Form send