# Maropost SMTP Profile

This guide will show you how to configure your SMTP profile to support using an API key with Maropost.

1. Navigate to Admin → Plugins → SMTP Maintenance

* Click the *Add Mail Server* \[+] button or the edit button associated with your Maropost SMTP Profile
* Set the form fields like as:

**Host Name:** smtp.maropost.com ​

**Username:** apikey (Not your actual API key- type in “apikey”) 

**Password:** Your API key from Maropost 

**From Email:** the address associated with this SMTP Profile 

**Port number:** 587 

**Use SSL:** unchecked 

**Use Relay:** checked 

**Custom Headers (\* indicates required):**

\* X-ApiKey: Your API key from Maropost

\* X-AccountID: Your Maropost Account ID

\* X-CampaignName: The unique lookup key for the transactional campaign

\* X-CampaignID: The Transactional Campaign ID that you have created within Maropost for Marketing. This x-header is required ONLY if your Maropost Marketing Cloud Account ID is between 1 and 999.

\* SMTPAutoTLS:false             This custom header must be included with *false* for Maropost SMTP to work properly.

<figure><img src="/files/D8HM9hNzieAb3MBCxax8" alt=""><figcaption><p>Konnektive - Maropost SMTP</p></figcaption></figure>

Optional SMTP Headers and more SMTP information can be found [here](https://galaxy.maropost.com/s/article/Sending-Transactional-Campaigns-via-SMTP).


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