The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Hostinger Agentic Mail connects Hostinger Email mailboxes to webhooks, API integrations, outbound recipient controls, and compatible AI clients using MCP. As of October 4, 2026, Hostinger documents two ways to open its settings: the Hostinger dashboard for mailboxes across a domain, or Webmail for the mailbox you are currently signed into. Labels and availability can change, so follow the labels currently shown in your account.
Before you start
Have a working Hostinger Email mailbox for the address you intend to connect. Hostinger’s general email setup guidance says the account should be created, the domain should point to Hostinger, and the correct MX records should be configured before setting up email on an app or device. These are general mail-readiness checks; they do not mean you need to change DNS just to enable Agentic Mail. Hostinger’s Agentic Mail guide says the feature is available on all Hostinger Email plans; confirm current plan inclusions with Hostinger if you are choosing a plan.
Choose the settings location based on what you need to manage:
- Hostinger dashboard: Sign in, select Emails, choose your domain, scroll the secondary sidebar, and select Agentic mail. Hostinger says this route lets an administrator manage Agentic Mail settings for any mailbox on that domain.
- Webmail: Sign in to the mailbox, open Settings, and select Agentic Mail. This route controls the mailbox currently signed in.
Hostinger’s labels may shift as the interface changes; use the current dashboard or Webmail labels if they differ.
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Choose the integration that fits your goal
| Option | Best fit | How it works | Setup burden |
|---|---|---|---|
| Webhook | Reacting to incoming messages | Hostinger sends an HTTP POST to a public HTTPS endpoint when the documented message.received event occurs. |
Requires a reachable endpoint and handling of the Bearer token. |
| REST API | Custom applications that need mailbox operations or webhook management | Your application makes API requests using an API token. Hostinger describes operations for sending, reading, organizing, and managing email. | Requires API integration; check Hostinger’s API documentation for current endpoints and availability. |
| Allow/block lists | Restricting where an automated mailbox can send | Per-mailbox recipient controls determine which outbound recipients are allowed or rejected. | Configured in Agentic Mail; understand how empty lists and conflicting matches behave before relying on them. |
| MCP server | Connecting a compatible AI client without building a custom REST integration | An MCP-compatible client connects using the setup instructions Hostinger provides. | Client steps vary; Hostinger names Claude and Cursor in its help materials, but does not promise compatibility with every platform. |
These are distinct controls: webhook and API credentials are separate, and allow/block lists govern outbound sending rather than incoming mail.
Create a webhook for incoming messages
- In Agentic Mail, open Webhooks and choose to add a webhook.
- Select the mailbox and enter the endpoint URL. It must be publicly accessible over HTTPS.
- Use the documented
message.receivedtrigger, then save the webhook. Hostinger’s current guide identifies this as the available trigger and says it sends an HTTP POST with JSON to the configured URL. - Copy the webhook Bearer token when it is shown. Hostinger says the token is displayed only once; store it as a secret and configure your endpoint to validate the Authorization header.
- Use the webhook row’s Test action to send a sample POST without sending an email to the mailbox, then inspect recent deliveries for the result.
If a delivery fails, Hostinger advises checking that the endpoint is publicly reachable over HTTPS and returns HTTP 200. If the token may have been exposed, regenerate it; regeneration invalidates the old token, so update the endpoint’s secret as well.
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Create an API token for an application
- Open Agentic mail → API and create a token.
- Give the token a descriptive name so you can identify its integration.
- Choose its mailbox scope: all mailboxes, or only selected mailboxes.
- Copy the token when displayed and store it securely. Hostinger says it appears only once.
Use selected-mailbox scope when an integration only needs one or a few addresses. The all-mailboxes option also covers future mailboxes, so it grants broader access. Hostinger describes API tokens as able to manage SMTP/IMAP actions and webhooks; consult its current API documentation for the precise operations and endpoint details supported by your integration.
Limit an automated mailbox’s outbound recipients
Configure the allow and block lists for the specific mailbox. These are outbound sending controls, not filters for incoming messages.
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- Allow list: When populated, sending is limited to listed email addresses or domains. An empty allow list leaves sending open to any recipient.
- Block list: Matching recipients are rejected silently at send time.
- When both lists match: The block list takes priority. For example, a blocked address remains blocked even if it falls under a broader allowed domain.
Because blocked sends are rejected silently, do not rely on the sender receiving an obvious warning as the only signal that a message was prevented.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Connect an MCP client or Managed OpenClaw
Compatible MCP clients
For Claude, Hostinger’s guide points to the official Hostinger Mail connector flow in Claude’s connector directory. For other MCP-compatible clients or advanced configurations, consult the setup instructions shown in the Hostinger dashboard; some setups may require technical knowledge. Supported platforms can change, so check the current instructions rather than assuming every client works.
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Managed OpenClaw example
Hostinger documents a separate API-based Managed OpenClaw setup. It requires both an active Hostinger Email mailbox and an active Managed OpenClaw application:
- Create an Agentic Mail API token using the scope appropriate to the mailbox.
- Save the token in the Managed OpenClaw application’s environment using the variable requested in Hostinger’s current instructions.
- Apply the environment change and restart the application.
- Ask OpenClaw to connect to the Hostinger Mail API, then test a mailbox action, such as sending an email.
This is Hostinger’s documented Managed OpenClaw example; other OpenClaw installations may have different configuration steps.
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Official Hostinger instructions
- How to use Agentic Mail in Hostinger — current feature guide for webhooks, API, outbound controls, and MCP.
- How to set up Hostinger Email — general mailbox and domain readiness guidance.
- How to connect Hostinger Email to OpenClaw — Managed OpenClaw example.
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