---
title: "STACKIT MailOut"
description: "Fully managed transactional email delivery service offering DKIM, SPF, and TLS encryption from European data centers."
scfAsset:
  category: "service"
  managed: true
  marketplaceUrl: "https://marketplace.stackit.cloud/en/products"
  tags: ["Email", "SMTP", "REST API", "Messaging", "DKIM"]
  maintainers:
    - user: "alexander.gabert"
source_url: "https://framework.stackit.cloud/architecture/assetcontainer/stackit/stackit-service-mailout/"
source_file: "docs/architecture/assetcontainer/stackit/stackit-service-mailout.mdx"
---

STACKIT MailOut provides reliable transactional email delivery for cloud applications.

## Service Overview
- **Secure Email Delivery**: High-deliverability transactional emailing hosted in German data centers.
- **Zero Server Maintenance**: Fully managed relay infrastructure eliminates custom mail server operations.
- **Sender Protection**: Built-in DKIM, SPF, and TLS transport encryption for domain verification.

## Technical Details
- **Interfaces**: Accessible via standard SMTP relay connections or modern REST APIs.
- **Billing**: Consumption-based billing calculated per sent email.

## Limitations & Constraints
- **Outbound Only**: Supports transactional email sending only (inbound email reception unsupported).

<LinkCard title="STACKIT MailOut Documentation" href="https://docs.stackit.cloud" />