Omnisend

Omnisend Campaigns API

The Campaigns API from Omnisend — 14 operation(s) for campaigns. Version 2026-03-15, harvested from Omnisend's published contract.

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Business capability

Digital Marketing Management BC-400.60

Operations 14

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /campaigns List campaigns · List campaigns with filtering, sorting, and cursor pagination #

Ask an LLM

“Which of my campaigns are still drafts?”

“Can I list only SMS campaigns created this month?”

Tell an agent

List campaigns with status {status}.

List {channel} campaigns whose name contains {nameContains}.

POST /campaigns Create a campaign draft · Create campaign #

Ask an LLM

“How do I create a new email campaign draft?”

“Can I set up a booster resend for a campaign that was already sent?”

Tell an agent

Create a {channel} campaign draft of type {type} named {name}.

Create a {type} campaign on channel {channel} with booster settings {boosterSettings}.

DELETE /campaigns/{id} Delete a campaign · Delete campaign #

Ask an LLM

“Can I delete a campaign I don't need anymore?”

“What's the way to get rid of an existing booster so I can replace it?”

Tell an agent destructive · confirm first

Delete campaign {id}.

Remove the existing booster campaign {id} so I can create a new one.

GET /campaigns/{id} Get one campaign · Get campaign #

Ask an LLM

“What content and audience does one particular campaign have?”

“Can I check a single campaign's current status by its ID?”

Tell an agent

Show campaign {id}.

Fetch the settings, audience and status of campaign {id}.

PATCH /campaigns/{id} Edit a draft campaign · Update campaign (draft status only) #

Ask an LLM

“Why does editing my campaign return a conflict once it's scheduled?”

“Can I change the audience or content of a campaign that is still a draft?”

Tell an agent

Rename draft campaign {id} to {name}.

Update the audience of draft campaign {id} to {audience}.

POST /campaigns/{id}/ab-test/resume Resume a stopped A/B test · Resume A/B test #

Ask an LLM

“Can I restart automatic winner selection on an A/B test I stopped earlier?”

“What does resuming a stopped A/B test campaign do?”

Tell an agent

Resume the stopped A/B test on campaign {id}.

Let automatic winner selection consider campaign {id} again.

POST /campaigns/{id}/ab-test/stop Stop a running A/B test · Stop A/B test #

Ask an LLM

“How do I halt automatic winner picking on a running A/B test?”

“Can I freeze an A/B test while the campaign is in started status?”

Tell an agent

Stop the A/B test on campaign {id}.

Halt the winner-selection phase of A/B campaign {id}.

POST /campaigns/{id}/ab-test/winner Pick an A/B test winner manually · Select A/B test winner #

Ask an LLM

“Can I manually choose which A/B variant wins and gets sent?”

“What happens right after I pick an A/B test winner myself?”

Tell an agent

Pick variant {variantID} as the winner of campaign {id}'s A/B test.

Send variant {variantID} of A/B campaign {id} as the winner now.

POST /campaigns/{id}/cancel Cancel a campaign · Cancel campaign #

Ask an LLM

“Can I cancel a scheduled campaign before it goes out?”

“Which campaign statuses can be canceled, and can an SMS campaign be canceled once started?”

Tell an agent destructive · confirm first

Cancel campaign {id}.

Cancel the scheduled or paused send of campaign {id}.

POST /campaigns/{id}/copy Copy a campaign into a new draft · Copy campaign #

Ask an LLM

“How do I reuse a sent campaign by making an editable draft copy?”

“Does duplicating a campaign change the original one?”

Tell an agent

Copy campaign {id} into a new draft.

Duplicate campaign {id} with its content, audience and settings.

POST /campaigns/{id}/send Send a draft campaign · Send campaign #

Ask an LLM

“How do I send a draft campaign out to its audience?”

“Can I send the same campaign a second time after it has gone out?”

Tell an agent

Send campaign {id}.

Submit draft campaign {id} for sending on its schedule.

POST /campaigns/{id}/test-email Send a test email of a campaign · Send campaign test email #

Ask an LLM

“Can I email myself a preview of a draft campaign before sending it?”

“How many addresses can receive a campaign test email?”

Tell an agent

Send a test of campaign {id} to {recipients}.

Email a preview of draft campaign {id} to {recipients}.

GET /campaigns/{id}/utm Get a campaign's UTM settings · Get campaign UTM settings #

Ask an LLM

“What UTM tags are set on my campaign's links?”

“Can I see the per-variant UTM settings of an A/B campaign?”

Tell an agent

Show UTM settings for campaign {id}.

Get the UTM tags of each variant in A/B campaign {id}.

PUT /campaigns/{id}/utm Replace a campaign's UTM settings · Update campaign UTM settings #

Ask an LLM

“How do I change the UTM tags on a draft campaign?”

“Can I set different UTM tags for each A/B test variant?”

Tell an agent

Set UTM tags {tags} on campaign {id}.

Set per-variant UTM tags {variants} on A/B campaign {id}.

Omnisend Campaigns API

Operations 14

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