Lemlist Developer Docs

Webhooks let you receive real-time POST callbacks whenever specific events occur in your lemlist workspace. You can subscribe to individual activity events (e.g. emailsOpened, linkedinReplied, whatsappMessageSent) or to lead-state groups (e.g. contacted, warmed, interested) that aggregate multiple activity types. For the full categorized list of available events, see Add Webhook.

Webhooks send real-time HTTP notifications upon campaign events (opens, clicks, replies, etc.).

_id

string

Unique webhook identifier

targetUrl

string<uri>

Destination URL for event notifications

type

enum<string>

Event type to listen for. Events are grouped by category — see the endpoint docs for a full breakdown.

Available options:

contacted,

hooked,

attracted,

warmed,

interested,

notInterested,

emailsSent,

emailsOpened,

emailsClicked,

emailsReplied,

emailsBounced,

emailsFailed,

emailsInterested,

emailsNotInterested,

emailsUnsubscribed,

linkedinSent,

linkedinOpened,

linkedinReplied,

linkedinInterested,

linkedinNotInterested,

linkedinSendFailed,

linkedinVisitDone,

linkedinVisitFailed,

linkedinFollowDone,

linkedinFollowFailed,

linkedinFollowSkipped,

linkedinInviteDone,

linkedinInviteFailed,

linkedinInviteAccepted,

linkedinEndorseDone,

linkedinEndorseFailed,

linkedinEndorseSkipped,

linkedinVoiceNoteDone,

linkedinVoiceNoteFailed,

linkedinLikeLastPostDone,

linkedinLikeLastPostNoPost,

linkedinLikeLastPostFailed,

linkedinWithdrawInvitationDone,

linkedinWithdrawInvitationFailed,

whatsappMessageSent,

whatsappMessageDelivered,

whatsappMessageOpened,

whatsappReplied,

whatsappMessageFailed,

smsSent,

smsDelivered,

smsReplied,

smsFailed,

aircallCreated,

aircallEnded,

aircallDone,

aircallInterested,

aircallNotInterested,

apiDone,

apiInterested,

apiNotInterested,

apiFailed,

manualInterested,

manualNotInterested,

paused,

resumed,

stopped,

campaignComplete,

customDomainErrors,

connectionIssue,

sendLimitReached,

lemwarmPaused,

annotated,

enrichmentDone,

enrichmentError,

callRecordingDone,

callTranscriptDone,

inboxLabelUpdated,

signalRegistered,

deliverabilityAlertTriggered

campaignId

string

The ID of the campaign the webhook is associated with (if any)

createdAt

string<date-time>

Creation timestamp

zapId

integer

Zapier integration ID (if the destination is a Zapier webhook)