lemlist

lemlist Campaigns API

Campaign CRUD and lifecycle - create, update, duplicate, start, pause, validation statutes, stats, reports and asynchronous exports.

GitHub OpenAPI
Business capability
Demand Generation Management BC-400.40

Operations 15

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 my campaigns · Retrieve All Campaigns #
Ask an LLM
“Which outreach campaigns do I have in lemlist right now?”
“Can I list only campaigns that are paused or archived?”
Tell an agent
List all my campaigns.
Show my campaigns with status {status}, newest first.
POST /campaigns Create a new campaign · Create a new campaign #
Ask an LLM
“How do I start a brand-new outreach campaign from scratch?”
“What do I need to provide to set up an empty campaign?”
Tell an agent
Create a new campaign called {name}.
Set up a fresh blank campaign.
GET /campaigns/{campaignId} Get one campaign's details · Retrieve One Campaigns #
Ask an LLM
“Where can I see the full details of a single campaign?”
“What settings and status does a specific campaign have?”
Tell an agent
Show me campaign {campaignId}.
Fetch the details of campaign {campaignId}.
PATCH /campaigns/{campaignId} Update a campaign's settings · Update campaign configuration #
Ask an LLM
“Can I make a campaign stop sending once a lead books a meeting?”
“How do I turn off open tracking on an existing campaign?”
Tell an agent
Rename campaign {campaignId} to {name}.
Set stop-on-reply to {stopOnEmailReplied} for campaign {campaignId}.
POST /campaigns/{campaignId}/pause Pause a running campaign · Pause a campaign #
Ask an LLM
“How do I temporarily stop a campaign from sending?”
“Can I put an active sequence on hold?”
Tell an agent
Pause campaign {campaignId}.
Put campaign {campaignId} on hold now.
GET /campaigns/{campaignId}/export/start Start an export of campaign stats · Start an Export Campaign Stats #
Ask an LLM
“How do I kick off an asynchronous export of a campaign's statistics?”
“What returns the export id I need before downloading campaign stats?”
Tell an agent
Start a stats export for campaign {campaignId}.
Begin exporting campaign {campaignId} statistics and give me the export id.
GET /campaigns/{campaignId}/export/{exportId}/status Check the status of a campaign export · Get Status Of Campaign Export #
Ask an LLM
“Is my campaign stats export finished yet?”
“Where do I get the download link once a campaign export completes?”
Tell an agent
Check the status of export {exportId} for campaign {campaignId}.
Tell me if export {exportId} of campaign {campaignId} is ready to download.
GET /campaigns/reports Get reports for several campaigns · Reports #
Ask an LLM
“Can I pull a summary report across multiple campaigns at once?”
“Which report shows sent, opened and replied totals for a list of campaigns?”
Tell an agent
Get the campaign reports for {campaignIds}.
Show me the overall reports for all my campaigns.
PUT /campaigns/{campaignId}/export/{exportId}/email/{email} Email a campaign export to an address · Export Campaign Send Status By Email #
Ask an LLM
“Can lemlist email me the stats file when a campaign export is done?”
“How do I have a finished campaign export sent to a teammate's inbox?”
Tell an agent
Send export {exportId} of campaign {campaignId} to {email} when it's ready.
Email the campaign {campaignId} export {exportId} to {email}.
GET /campaigns/{campaignId}/export/leads Export a campaign's leads · Export Campaign Leads #
Ask an LLM
“How do I download every lead in a campaign as a CSV?”
“Can I export only leads in a particular state, like interested?”
Tell an agent
Export the leads of campaign {campaignId} as {format}.
Export campaign {campaignId} leads whose last state is {state}.
POST /campaigns/{campaignId}/start Launch or resume a campaign · Start Campaign #
Ask an LLM
“How do I launch a draft campaign so it starts sending?”
“Can I restart a campaign I paused earlier?”
Tell an agent
Start campaign {campaignId}.
Resume sending on paused campaign {campaignId}.
GET /v2/campaigns/{campaignId}/stats Get detailed stats for one campaign · Get Campaign Stats #
Ask an LLM
“What were a single campaign's open, click and reply numbers last month?”
“Can I break down one campaign's stats by A/B version or channel?”
Tell an agent
Get stats for campaign {campaignId} from {startDate} to {endDate}.
Show campaign {campaignId} stats for {channels} between {startDate} and {endDate}.
POST /v2/campaigns/stats/batch Get stats for up to 100 campaigns at once · Get Batch Campaign Stats #
Ask an LLM
“How do I compare detailed performance stats for many campaigns in one request?”
“What's the limit on campaigns per batch stats call?”
Tell an agent
Get batch stats for campaigns {campaignIds} from {startDate} to {endDate}.
Compare campaigns {campaignIds} sent by {sendUser} between {startDate} and {endDate}.
POST /campaigns/{campaignId}/duplicate Duplicate a campaign · Duplicate Campaign #
Ask an LLM
“Can I copy an existing campaign to reuse its sequence?”
“What name does a duplicated campaign get if I don't pick one?”
Tell an agent
Duplicate campaign {campaignId}.
Make a copy of campaign {campaignId} named {name}.
GET /campaigns/{campaignId}/statutes Check a campaign for launch errors and warnings · Get Campaign Statutes #
Ask an LLM
“Why can't my campaign launch, and what's blocking it?”
“Does my campaign have DNS or daily-limit warnings before I start it?”
Tell an agent
Check campaign {campaignId} for blocking errors and warnings.
Run the launch validation on campaign {campaignId}.

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/lemlist/refs/heads/main/openapi/lemlist-campaigns-api-openapi.yml

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OpenAPI Specification

lemlist-campaigns-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Lemlist Campaigns API
  version: 1.0.0
  description: 'Operations tagged Campaigns across 2 of this provider''s published API definitions: lemlist-openapi-v1-legacy.json, lemlist-openapi-v2.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.lemlist.com/api
tags:


# --- truncated at 32 KB (58 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/lemlist/refs/heads/main/openapi/lemlist-campaigns-api-openapi.yml