1. Warmup
InboxKit
  • Introduction
  • Quick Start
  • Domain Management
  • Mailbox Operations
  • Deliverability Monitoring
  • Order
    • Place Order
      POST
  • Webhook
    • Events: OAuth Consent & Client ID Changes
      POST
    • Event: Mailbox Status Changed
      POST
    • Webhook Integration & Signature Verification
      POST
    • Event: Domain Status Changed
      POST
  • Account
    • Get account details
      GET
  • Workspaces
    • List workspaces
      GET
    • Create workspace
      POST
    • Invite Member to Workspace
      POST
    • Get workspace details
      GET
    • Update workspace
      PUT
    • Delete workspace
      DELETE
    • Update workspace webhook
      POST
  • Domains
    • Domain Renewals
    • Check if domain is banned from registration
    • Check domain availability
    • Register domains
    • List domains
    • List assignable domains
    • Remove domains
    • Set domain forwarding
    • Set catch-all email
    • Remove catch-all email
    • Get nameservers for domain connection
    • Check nameservers propagation
    • Check Workspace Availability
    • Set DMARC Configuration
    • Remove DMARC Configuration
    • Regenerate Domain Nameservers
    • Request Domain Renewal
    • Check Renewal Status
    • Update Domain Privacy
    • Update Domain Contact Details
    • Search available domains
    • Move domains to another workspace
    • Preview a domain move
    • Get domain move status
    • Start a domain rotation
    • Preview a domain rotation
    • Get domain rotation status
  • Cloudflare Domains
    • Connect Cloudflare Domains
    • List Connected Cloudflare Domains
    • Get Domain Details
    • Disconnect Cloudflare Domains
    • List Cloudflare Zones
  • Mailboxes
    • Microsoft 365 & Azure Reactivation
      • Reactivate mailboxes (Microsoft 365 / Azure)
      • Re-purchase mailboxes for reactivation (Microsoft 365 / Azure)
    • List mailboxes
    • Add or update signature for mailboxes
    • Delete signature for mailboxes
    • Show mailbox credentials
    • Get mailbox details
    • Buy mailboxes
    • Check mailbox status
    • Cancel mailboxes
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    • Update mailbox profile picture
    • Generate TOTP
    • Change username
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    • Check mailbox availability
    • Get Failure Reason
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    • Resetup mailboxes
    • Get resetup status
  • DNS
    • Get DNS records
    • Add DNS records
    • Update DNS records
    • Delete DNS records
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  • Sequencers
    • Export mailboxes status
    • List sequencer platforms
    • Get sequencer tags
    • List sequencers
    • Export mailboxes
    • Add sequencer
    • Update sequencer
    • Delete sequencers
    • Verify Lemlist OTP
  • Billing
    • Get pricing plans
    • Add Credits to Wallet
    • Check Payment Status
    • Get subscription details
    • Change subscription plan
    • Cancel subscription
    • Get wallet details
    • Update auto top-up settings
    • Get billing portal link
    • Get Wallet Logs
  • Warmup
    • List Warmup Subscriptions
      POST
    • Get Warmup Subscription Details
      GET
    • Add Warmup to Mailboxes
      POST
    • Pause Warmup for Mailboxes
      POST
    • Resume Warmup for Mailboxes
      POST
    • Cancel Warmup for Mailboxes
      POST
    • Get Warmup Statistics
      GET
    • Get Warmup Pricing
      GET
    • Update Warmup Settings
      POST
  • Client ID Requests
    • Initiate Client ID Request
    • Get Client ID Request Status
    • List Client ID Requests
  • Mailbox Forwarding
    • Setup Email Forwarding
    • Update Email Forwarding
    • Remove Email Forwarding
    • List Forwarding Jobs
  • Consent Request
    • Initiate Consent Request
    • Get Consent Request Status
    • List Consent Requests
  • Tags
    • Assign tags to domains or mailboxes
    • Get all tags
    • Create a new tag
    • Delete a tag
  • Prewarm
    • Search Domains
    • Search Mailboxes
    • Buy Prewarmed Mailboxes
    • Check Order Status
    • Check Availability
  • Inbox Placement
    • Tests
      • Create Test
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      • Get Test Results
    • Scheduled Tests
      • List Scheduled Tests
      • Get Scheduled Test
      • Pause Scheduled Test
      • Resume Scheduled Test
      • Delete Scheduled Test
  • InfraGuard
    • InfraGuard - Subscriptions
      • List protected domains
      • Get subscription details
      • Enable InfraGuard for domains
      • Cancel InfraGuard for domains
      • Get workspace statistics
      • Get pricing info
    • InfraGuard - Monitoring
      • Get blacklist check history
      • Get DNS check history
      • Get current bounce metrics
      • Get bounce check history
    • InfraGuard - Settings
      • Update subscription settings
      • Trigger manual check
    • InfraGuard - Alerts
      • List alerts
      • Acknowledge an alert
      • Resolve an alert
    • InfraGuard - Action Items
      • List action items
      • Get action item statistics
      • Resolve an action item
      • Dismiss an action item
  • Email Insight
    • Email Insights - Workspace
      • Get Workspace Overview
      • Get Mailboxes Health
      • Get High Bounce Mailboxes
      • Get Workspace Activity
      • Get Workspace Daily Stats
      • Get Workspace Campaign Reply Rate
    • Email Insights - Mailbox
      • Get Mailbox Stats
      • Get Mailbox Deliverability
      • Get Mailbox Health
      • Get Mailbox Trends
      • Get Mailbox Activity
      • Get Mailbox Bounce Events
      • Get Mailbox Top Recipients
      • Get Mailbox Top Recipient Domains
      • Get Mailbox Message Breakdown
      • Get Mailbox Subject Analysis
      • Get Mailbox Reply Time Heatmap
      • Get Mailbox Reply Rate By Domain
      • Get Mailbox Velocity Overlay
      • Get Mailbox First Touch Funnel
      • Get Mailbox Warmup Stats
      • Get Mailbox Auth Failures
      • Get Mailbox Sending IP Breakdown
      • Get Mailbox Recipient ESP Breakdown
      • Get Mailbox Body Templates
  • Domain Renewals
  • Verified Domains
    • List verified destinations
    • Add a destination to verify
    • Verify a destination
    • Remove a destination
  • Schemas
    • Schemas
      • WebhookPayload
      • DomainStatusWebhook
      • Tag
      • DomainEventData
      • MailboxStatusWebhook
      • MailboxEventData
      • Domain
      • Mailbox
      • ChangeDetails
      • WebhookResponse
      • ErrorResponse
  1. Warmup

Add Warmup to Mailboxes

POST
https://api.inboxkit.com/v1/api/warmup/add
Maintainer:Not configured
Add warmup to mailboxes you already have. Mailboxes that are not ready yet are added as pending_activation and start warming automatically once they are ready. Set activate_immediately to true to start warmup now for mailboxes that are already active; their first month is charged to your wallet right away.
Buying new mailboxes? Set warmup_addon_enabled to true on Buy mailboxes or Place Order to add warmup in the same request, with no separate call.

Request

Authorization
Provide your bearer token in the
Authorization
header when making requests to protected resources.
Example:
Authorization: Bearer ********************
Header Params

Body Params application/json

Examples

Responses

🟢201Success Response
application/json
Bodyapplication/json

🟠400Bad Request
🔴500Internal Server Error
Request Request Example
Shell
JavaScript
Java
Swift
curl --location 'https://api.inboxkit.com/v1/api/warmup/add' \
--header 'X-Workspace-Id;' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
    "mailbox_uids": [
        "string"
    ],
    "activate_immediately": false
}'
Response Response Example
201 - Example 1
{
    "error": false,
    "message": "Created 3 warmup subscription(s)",
    "subscriptions": [
        {
            "uid": "ws-a1b2c3d4-e5f6-7890-abcd-ef1234567890",
            "status": "active",
            "mailbox_email": "[email protected]",
            "price_per_month": 3,
            "started_at": null,
            "next_billing_date": "2025-02-15T10:30:00.000Z",
            "createdAt": "2025-01-15T10:30:00.000Z"
        }
    ],
    "errors": [
        {
            "mailbox_uid": "mb-failed-uid",
            "error": "Error creating subscription"
        }
    ],
    "skipped": 1
}
Modified at 2026-09-28 15:39:16
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Get Warmup Subscription Details
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Pause Warmup for Mailboxes
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