Webhooks

Learn how to use webhooks to get alerts on subscriber and post events.

Checking for the API Key
We send a POST request to the webhook endpoints you specify. To verify that the request came from Letterdrop, check for a field in the header of the request with key api-key and make sure it matches the value in your Settings.
If the API Key is absent, you're getting hit up with requests from our evil twin from another dimension. Do not trust him under any circumstances!
Post published, updated, or deleted
Triggers when a new post is published.
Key
Value
Type
id
Post ID
String
title
Title of the post
String
subtitle
Subtitle of the post
String
textPreview
First 280 chars of post body in plain text
String
body
Post body in HTML
String
text
Post body as plain text
String
slug
Slug portion of URL for the post
String
publishedOn
Date post was published on
Date
coverImage
Cover image URL hosted on Letterdrop CDN
String
thumbnail
Thumbnail image URL
String
status
Whether the post is published or updated. Takes values published, updated or deleted
String
tags
List of tags
List (String)
publication
Workspace domain name
String
updated
Date when post was updated
String
readTime
Read time of the post in minutes
String
wordCount
Number of words in post
Number
featured
Whether the post is featured post or not
Boolean
author
Author object with fields name (String), avatar (String)
Object
url
Full URL of final post
String
metaTitle
Meta title of post
String
metaDescription
Meta description of post
String
markdown
Post body as Markdown
String
customFields
List of custom field objects defined in workspace. Each item contains name (String), type (String), value, and other type-specific metadata.
List (Object)
destination
Destination of post
String
Sample payload
{
 "id": "6030dc61a21da91db1d593c0",
 "title": "Title",
 "subtitle": "Subtitle",
 "text": "Lorem ipsum dolor sit amet...",
 "textPreview": "Lorem ipsum dolor sit amet"
 "body": "<p>Lorem ipsum dolor sit amet,</p>",
 "slug": "my-new-post",
 "url": "https://letterdop.com/blog/my-new-post",
 "publishedOn": "2020-10-20T12:18:13.095Z",
 "coverImage": "https://cdn.letterdrop.co/images/2022/11/24/hir0hq8n.jpeg",
 "thumbnail": "https://cdn.letterdrop.co/images/2022/11/24/hir0hq8n.jpeg",
 "metaTitle": "Meta Title",
 "metaDescription": "This is a post via Letterdrop",
 "status": "published",
 "tags": ["chocolate", "food", "restaurant"],
 "updated": "2020-10-20T12:18:13.095Z",
 "publication": "piedpiper",
 "readTime": 3,
 "wordCount": 1565,
 "featured": false,
 "markdown": "Lorem ipsum dolor sit amet"
 "customFields": [
 {
 "name": "Related Posts",
 "type": "Multi-Select List",
 "value": "",
 "allowedValues": [
 "Post 1", "Post 2", ...
 ]
 },
 ...
 ]
}
​
Subscriber added
Triggers when a new email was added to your subscriber list.
Key
Value
Type
email
Email of subscriber
String
signedUpOn
Date user subscribed on
Date
Sample payload
{
 "email": "[email protected]",
 "signedUpOn": "2020-10-20T12:07:13.629Z"
}
Subscriber removed
Triggers when an email was removed from your subscriber list.
Key
Value
Type
email
Email of subscriber
String
unsubscribedOn
Date user unsubscribed on
Date
Sample payload
{
 "email": "[email protected]",
 "unsubscribedOn": "2020-10-20T12:07:13.629Z"
}
Subscriber updated
Triggers when a subscriber is updated.
Key
Value
Type
email
Email of subscriber
String
field
Updated field
String
value
New value of the field
String
Sample payload
{
 "email": "[email protected]",
 "field": "name",
 "value": "john"
}
​
Project created or updated
Triggers when a project is created or updated.
Key
Value
Type
title
Project title
String
description
Project description
String
labels
List of labels
List
keyword
Keyword associated with project
String
status
Project status
String
suggestedBy
Email of the user who suggested the idea
String 
suggestedOn
Date idea was suggested on
Date
assignedBy
Email of the user who assigned the project
String
assignedTo
Email of the user who will work on the project
String
contributors
List of emails of users who can contribute to the project
List
contentMapDeadline
Content Map deadline
Date
editorApprovers
List of email of editor approvers
List
editorDeadline
Editorial review deadline
Date
approvers
List of emails of approvers
List 
reviewDeadline
Review deadline
Date
approvedBy
Email of user who approved the project
String
publishDate
Publish date
Date
Sample payload
{
 title: 'Project title',
 description: 'Project description',
 labels: [ 'label1', 'label2', 'label3' ],
 keyword: 'keyword',
 status: 'content_map_draft',
 suggestedBy: '[email protected]',
 suggestedOn: '2022-07-19T16:43:35.033Z',
 assignedBy: '[email protected]',
 assignedTo: '[email protected]',
 contributors: [ '[email protected]' ],
 contentMapDeadline: '2022-07-27T03:30:00.000Z',
 editorApprovers: [ '[email protected]' ],
 editorDeadline: '2022-08-01T03:30:00.000Z',
 approvers: [ '[email protected]' ],
 reviewDeadline: '2022-08-04T03:30:00.000Z',
 approvedBy: '[email protected]',
 publishDate: '2022-08-05T03:30:00.000Z'
}

Key	Value	Type
title	Project title	String
description	Project description	String
labels	List of labels	List
keyword	Keyword associated with project	String
status	Project status	String
suggestedBy	Email of the user who suggested the idea	String
suggestedOn	Date idea was suggested on	Date
assignedBy	Email of the user who assigned the project	String
assignedTo	Email of the user who will work on the project	String
contributors	List of emails of users who can contribute to the project	List
contentMapDeadline	Content Map deadline	Date
editorApprovers	List of email of editor approvers	List
editorDeadline	Editorial review deadline	Date
approvers	List of emails of approvers	List
reviewDeadline	Review deadline	Date
approvedBy	Email of user who approved the project	String
publishDate	Publish date	Date

Finding and using your API key

API Endpoints

Last modified 2mo ago

Key	Value	Type
id	Post ID	String
title	Title of the post	String
subtitle	Subtitle of the post	String
textPreview	First 280 chars of post body in plain text	String
body	Post body in HTML	String
text	Post body as plain text	String
slug	Slug portion of URL for the post	String
publishedOn	Date post was published on	Date
coverImage	Cover image URL hosted on Letterdrop CDN	String
thumbnail	Thumbnail image URL	String
status	Whether the post is published or updated. Takes values `published`, `updated` or `deleted`	String
tags	List of tags	List (String)
publication	Workspace domain name	String
updated	Date when post was updated	String
readTime	Read time of the post in minutes	String
wordCount	Number of words in post	Number
featured	Whether the post is featured post or not	Boolean
author	Author object with fields `name` (String), `avatar` (String)	Object
url	Full URL of final post	String
metaTitle	Meta title of post	String
metaDescription	Meta description of post	String
markdown	Post body as Markdown	String
customFields	List of custom field objects defined in workspace. Each item contains name (String), type (String), value, and other type-specific metadata.	List (Object)
destination	Destination of post	String

Key	Value	Type
email	Email of subscriber	String
signedUpOn	Date user subscribed on	Date