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Omnisend EmailContent API

The EmailContent API from Omnisend — 3 operation(s) for emailcontent. Version 2026-03-15, harvested from Omnisend's published contract.

Omnisend EmailContent API is one of 15 APIs that Omnisend publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 2 JSON Schema definitions.

Tagged areas include EmailContent. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, authentication docs, a JSON-LD context, and 2 JSON Schemas.

This API exposes 3 operations across 2 paths, and defines 60 schemas. It is described by OpenAPI 3.0.0, at version 5.0.

Requests are made against a single base URL, https://api.omnisend.com/api.

3 operations 2 paths 60 schemas 1 GET1 POST1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.0
API Version
5.0
Base URL
https://api.omnisend.com/api
Authentication
API Key, OAuth 2.0
Resource Areas
1

Authentication & Security 2

Omnisend EmailContent API declares 2 security schemes for authenticating requests. An API key is passed in the header as Authorization (ApiKeyAuth). It supports OAuth 2.0 (Bearer) using the clientCredentials flow, exposing 2 scopes.

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 1 GET, 1 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.

Email Content 3
GET
/email-content/{id}
Get email content
2 params → 200400401403404410429500
PUT
/email-content/{id}
Update email content
2 params body → 200400401403404409410413
POST
/email-content/{id}/render
Render email content
2 params → 200400401403404410422429

Schemas 60

The contract defines 60 schemas that model the data the API accepts and returns. The most detailed are StyleProperties (33 properties), Block (25 properties), Discount (22 properties), Image (17 properties). Each schema is shown below with its type and property counts.

APIErrorResponse
object
RFC 9457 Problem Details error response
6 properties
Annotation
object
Gmail annotation settings
2 properties
Block
object
Block is a single element in the email template
25 properties
BlockComponent
object
BlockComponent is a block nested inside a parent block, carrying one part of what that parent renders. Some parent blocks assign a 'role' to each of their part…
10 properties
Body
object
Body settings for the template
4 properties
Button
object
Button block settings
4 properties
ButtonPreset
object
Button preset for consistent design
3 properties
ButtonStyle
object
Button preset style properties
14 properties
Column
object
Column is a single column of the row
4 properties
Content
object
Email content
5 properties
CursorsResponse
object
Cursor pointers for paginating forward and backward through results
2 properties
CustomFont
object
Custom font reference
1 property
Discount
object
Discount block settings. This object configures the offer only — the parts the recipient sees (code, redeem button, expiry) are separate role-tagged blocks in…
22 properties
DiscountCombinesWith
object
Discount combines with settings
3 properties
DynamicList
object
Dynamic list settings for repeating content blocks
4 properties
FieldError
object
Field-level validation error details
3 properties
Filter
object
Filter for conditional display of content
2 properties
FilterProperty
object
Filter property for conditional display of content
4 properties
GeneralSettings
object
General settings for the template
6 properties
Gmail
object
Gmail specific settings for email.
1 property
HTMLCode
object
HTML code block with separate style and body content
2 properties
Icon
object
Social media icon with link and image source
3 properties
Image
object
Image block for displaying images in the email
17 properties
ImportTemplateRequest
object
Represents the request body for importing a template from raw HTML
2 properties 2 required
LineSpace
object
Horizontal line or space block for layout separation
3 properties
ListUniversalLayoutsResponse
object
Represents the response for listing universal layouts
2 properties
Logo
object
Logo block for displaying a logo in the email
2 properties
OrderAddress
object
Postal address for billing or shipping
12 properties
OrderAddressHiddenFields
object
Visibility toggles for individual address fields
9 properties
OrderAddresses
object
Order addresses block displaying billing and shipping information
6 properties
OrderAddressesHiddenFields
object
Visibility toggles for the order addresses section
3 properties
OrderProduct
object
Individual product within an order
13 properties
OrderProducts
object
Order products block displaying ordered items
2 properties
OrderProductsHiddenFields
object
Visibility toggles for order product fields
11 properties
OrderShipping
object
Shipping method details
2 properties
OrderSummary
object
Order summary block displaying order identification details
5 properties
OrderSummaryHiddenFields
object
Visibility toggles for order summary fields
3 properties
OrderTax
object
Tax line item applied to the order
3 properties
OrderTotal
object
Order total block displaying pricing breakdown
10 properties
OrderTotalDiscount
object
Discount applied to the order total
3 properties
OrderTotalHiddenFields
object
Visibility toggles for order total fields
5 properties
OrderTransaction
object
Payment transaction details
1 property
PagingResponse
object
Cursor-based pagination metadata
3 properties
Preheader
object
Preheader block to setup View in Browser link text formattings Text is formatted as Text LinkText
2 properties
Product
object
Product block for displaying product information
11 properties
ProductRecommender
object
Product recommender settings for the product recommendations section
9 properties
Row
object
Row is a single row of the section
3 properties
Rule
object
Filter rule for conditional display of content
3 properties
Section
object
Section is a single section of the template
7 properties
Settings
object
Settings for the section
10 properties
Social
object
Social block for displaying social media icons and links
3 properties
StyleProperties
object
Style properties for the section
33 properties
Template
object
Email template
6 properties
TemplateListItem
object
Email template list item
4 properties
TemplateListResponse
object
List of email templates with pagination
2 properties
TextPreset
object
Text preset for consistent typography
3 properties
TextStyle
object
Text preset style properties
5 properties
UniversalLayout
object
Represents a universal layout in the external API
7 properties
Video
object
Video block for displaying a video in the email
4 properties
Visibility
object
Visibility settings for the template
2 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

omnisend-emailcontent-api-openapi.yml Raw ↑

Other APIs Omnisend publishes across the network.

Omnisend Analytics API
Omnisend Batches API
Omnisend Brands API
Omnisend Campaigns API
Omnisend Contacts API
Omnisend EmailTemplates API
Omnisend EmailUniversalLayouts API
Omnisend Events API
Omnisend Images API
Omnisend ProductCategories API
Omnisend Products API
Omnisend Segments API
Where this information came from

This is an independent, third-party profile of Omnisend EmailContent API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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