Get Campaign Messages

get

https://a.klaviyo.com/api/campaign-messages

🚧
This endpoint is in beta and will be released in GA in our 2026-07-15 revision.
A beta revision header (2026-04-15.pre) is required to use our beta APIs.

Returns campaign messages based on filters.

Rate limits:
Burst: 10/s
Steady: 150/m

Scopes:
campaigns:read

Query Params

fields[campaign-message]

array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#sparse-fieldsets

fields[campaign-message]

fields[campaign-variation]

array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#sparse-fieldsets

fields[campaign-variation]

fields[campaign]

array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#sparse-fieldsets

fields[campaign]

filter

string

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#filtering
Allowed field(s)/operator(s):
id: any, equals
campaign_id: equals
name: contains
status: equals
created: greater-or-equal, greater-than, less-or-equal, less-than
updated: greater-or-equal, greater-than, less-or-equal, less-than

include

array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#relationships

include

page[cursor]

string

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#pagination

page[size]

integer

1 to 100

Defaults to 20

Default: 20. Min: 1. Max: 100.

sort

string

enum

For more information please visit https://developers.klaviyo.com/en/v2026-04-15.pre/reference/api-overview#sorting

Headers

revision

string

required

Defaults to 2026-04-15.pre

API endpoint revision (format: YYYY-MM-DD[.suffix])

Responses

200Success

4XXClient Error

5XXServer Error