# `SquatchMail.Web.ActivityExportController`
[🔗](https://github.com/Axio-Intelligence/Squatch-Mail/blob/v0.1.1/lib/squatch_mail/web/controllers/activity_export_controller.ex#L1)

Streams the Trail Log's current filter set as a CSV download —
`GET <dashboard_path>/activity/export.csv`.

Accepts the same query params the Trail Log LiveView patches into its own
URL (`status`, `q`, or `range` as one of `24h`/`7d`/`30d`/`all`), so
"Export CSV" always downloads exactly what's on screen — see
`SquatchMail.Web.Live.TrailLog.filters_from_params/1`, the single source
of truth both this controller and the LiveView build `Tracker` filters
from. Rows are streamed with `Plug.Conn.chunk/2` rather than built as one
giant binary, so a large export doesn't hold the whole CSV in memory at
once.

This is a plain `Plug` (same pattern as `SquatchMail.Web.AssetController`
and `SquatchMail.Web.WebhookController`) — a CSV download needs no
view/format negotiation.

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*Consult [api-reference.md](api-reference.md) for complete listing*