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

# Email data retention

> How long email stats are available via the Kit API, and what to do when you need older data

Starting **October 15, 2026**, Kit is changing how far back email stats — opens, clicks, sends, bounces, and unsubscribes — are directly accessible across broadcasts and sequences. We're investing in a faster, more modern way to store and serve this data, which lets us build more robust reporting tools going forward.

This applies to email **stats only**. Subscriber records, tags, custom fields, purchases, and broadcast content are not affected. Nothing is deleted — a creator's data remains theirs; what changes is how older stats are accessed.

## What the API returns

The API returns email stats for the **last 5 years (60 months)**:

| Data age  | Kit app (UI)    | API & Kit MCP   | CSV export      |
| --------- | --------------- | --------------- | --------------- |
| 0–3 years | ✅ Available     | ✅ Available     | ✅ Available     |
| 3–5 years | ❌ Not shown     | ✅ Available     | ✅ Available     |
| 5+ years  | ❌ Not available | ❌ Not available | ❌ Not available |

Note that the Kit app UI shows the last 3 years, so the API, [Kit MCP](/mcp/kit-mcp), and exports give you access to a *longer* history (5 years) than creators see in the app.

How the 5-year window surfaces varies by endpoint:

* Requesting stats for a specific broadcast sent before the window returns a `400` error.
* Explicit date-range parameters that fall outside the window return a `400` error indicating the earliest available date.
* List and filter endpoints omit out-of-window broadcasts from results, or clamp date ranges to the window.

## Affected endpoints

* [Get stats for a broadcast](/api-reference/broadcasts/get-stats-for-a-broadcast) — returns a `400` error for broadcasts sent before the window
* [Get stats for a list of broadcasts](/api-reference/broadcasts/get-stats-for-a-list-of-broadcasts) — broadcasts sent before the window are omitted from results
* [Get link clicks for a broadcast](/api-reference/broadcasts/get-link-clicks-for-a-broadcast) — click data for broadcasts older than the window is no longer available
* [List stats for a subscriber](/api-reference/subscribers/list-stats-for-a-subscriber) — date params are clamped to the window; dates outside it return a `400` error
* [Filter subscribers by engagement](/api-reference/subscribers/filter-subscribers-by-engagement-sign-up-date-state-and-tags) — engagement-condition date bounds are clamped to the window; a `stats` include range outside it returns a `400` error

## Need data older than 5 years?

Stats older than 5 years will be archived and will no longer be accessible. If a creator needs their email stats that are older than 5 years, you have until October 15th, 2026 to export them directly from Kit or [contact Kit support](https://help.kit.com/). Requests need to come from the account owner, so apps should direct creators to support rather than contacting support on their behalf.

<Note>
  If your app stores or analyses long-term engagement history, sync any stats older than 5 years before October 15, 2026. Going forward, sync data before it ages out of the 5-year window.
</Note>