> For the complete documentation index, see [llms.txt](https://docs.aurinko.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurinko.io/faq/how-does-aurinko-billing-work.md).

# How does Aurinko billing work?

Aurinko bills monthly based on the number of **active accounts**.

An account is considered **active** if, during a billing month, it exceeds either of the following thresholds:

* more than **10 API calls**, or
* more than **1 MB (1024 KB)** of transferred data.

Once an account becomes active during the billing month, it is included in that month's billing, even if it is disconnected or deleted before the end of the month.

### How are duplicate accounts billed?

***

Aurinko performs mailbox deduplication for billing purposes.

Multiple Aurinko accounts connected to the **same mailbox** are billed as a **single active account**.

*For example:*

* Connecting the same Gmail mailbox multiple times counts as **one** billable account.
* Connecting one Gmail mailbox and one Outlook mailbox counts as **two** billable accounts because they are different mailboxes.

### Can Aurinko mirror my application's free trial?

***

**Yes.**

Upon request, Aurinko can mirror your application's trial period. During the mirrored trial, newly connected accounts are not billed. Billing begins automatically once your application's trial has ended.

For more information about enabling billing and trial periods, see [**Subscribe to Aurinko**](https://docs.aurinko.io/getting-started/subscribe-to-aurinko).

### What pricing tiers are available?

***

| Plan          | Included APIs                                   | Monthly traffic | Price                              |
| ------------- | ----------------------------------------------- | --------------- | ---------------------------------- |
| Unified API   | Calendar, Contacts, or Tasks (one selected API) | Up to 1 GB      | **$1 / active account / month**    |
| Email / CRM   | Email (non-IMAP) or CRM (one selected API)      | Up to 1 GB      | **$1.50 / active account / month** |
| Full Platform | Any number of APIs, including IMAP              | Unlimited       | **$2 / active account / month**    |