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2025-07-13

We've added a new source parameter to the /v1/subscribers endpoint that allows you to filter subscribers by their origin source.

What's new

You can now filter subscribers based on their source (e.g. api, import, organic, user, stripe).

Examples

Get all subscribers added via API:

import requests

url = "https://api.buttondown.com/v1/subscribers?source=api"
headers = {
  "Authorization": "Token $BUTTONDOWN_API_KEY"
}

response = requests.request("GET", url, headers=headers)
print(response.text)

Get subscribers from multiple sources (import and organic):

import requests

url = "https://api.buttondown.com/v1/subscribers?source=import&source=organic"
headers = {
  "Authorization": "Token $BUTTONDOWN_API_KEY"
}

response = requests.request("GET", url, headers=headers)
print(response.text)

Combine with other filters to create more specific queries:

import requests

url = "https://api.buttondown.com/v1/subscribers?source=api&type=regular&tag=newsletter"
headers = {
  "Authorization": "Token $BUTTONDOWN_API_KEY"
}

response = requests.request("GET", url, headers=headers)
print(response.text)

This filter works alongside all existing filters, making it easy to create powerful queries to understand your subscriber base better.

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