---
title: "Subscribe"
method: POST
path: "/api/subscribe"
tags: ["subscribe"]
---

# Subscribe

`POST /api/subscribe`

## Request

- Base URL: `https://api.equity-rank.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.equity-rank.com/api/subscribe`
- Auth: none declared

Add an email to the marketing subscriber list.

Optional first-touch attribution (channel/utm_*/referrer, from the client's
stored `er_attr` record) is persisted so lead yield is reportable per
acquisition channel. Keys are only included when non-empty, so a repeat
subscribe without attribution never clobbers the original first touch.

## Request body

- BodySubscribeApiSubscribePost
  - `email` string, required
  - `source` string, nullable
  - `channel` string, nullable
  - `utm_source` string, nullable
  - `utm_medium` string, nullable
  - `utm_campaign` string, nullable
  - `referrer` string, nullable

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/equity-rank/apis/equity-rank-api.md) · [All operations](https://skmtc.dev/equity-rank/apis/equity-rank-api/llms.txt) · [OpenAPI document](https://skmtc.dev/equity-rank/apis/equity-rank-api/revisions/c2f2463fee33?raw)