> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.laposta.org/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.laposta.org/_mcp/server.

# Editing the hostname of your account

> What the hostname does in the links of your newsletters and how to edit it yourself.

Your newsletters are sent under your name from the Laposta system. When subscribers request data from your newsletter, for instance by clicking a link, they connect to Laposta's servers. A hostname is used for this connection.

You can think of the hostname as the name of the machine that handles communication between your computer and those of your subscribers on the one hand, and Laposta on the other. All links and images in your newsletter are routed through this name.

When your subscribers request data from your newsletter, they will see the following URL in their browser bar:

`yourcompanyname.email-provider.nl`

In this URL, your hostname is the part before `email-provider.nl`. This makes your company name or website visible in the link as well.

Your hostname is separate from your [sender address](/wat-is-een-afzendadres), the email address your subscribers see as the sender, and from the [authentication of your domain](/stap-voor-stap-je-domein-authenticeren), which you configure in your DNS settings.

## Editing your hostname

When you apply for your account, you are automatically assigned a hostname. Go to Settings → Hostname to view or edit it.

This is useful if the automatically generated hostname is not to your liking, or if you send newsletters for different subsidiaries from a single account. In that case, edit the hostname before you send a campaign.

A hostname must meet the following requirements:

* 3 to 30 characters long
* only letters, numbers and the hyphen (-)

> **Note**
>
> If you edit your hostname, your previously sent newsletters will remain accessible to your subscribers under the old hostname.

## Related articles

#### [Which IP-addresses do Laposta's mail servers use?](/wat-zijn-de-ip-adressen-van-de-mailservers-van-laposta)

Overview of the IP ranges and domain names that Laposta uses to send newsletters.

#### [What rules must a sender address meet?](/wat-is-een-afzendadres)

Which email address you choose as a sender, why you need to confirm it and how it…

#### [When should you choose a dedicated IP-address for delivery?](/kan-ik-mijn-nieuwsbrief-vanaf-een-eigen-ip-adres-versturen)

Read from what sending volume a dedicated IP-address makes sense, what it costs and how…

#### [How does newsletter delivery work at Laposta?](/hoe-verzorgt-laposta-de-verzending-van-mijn-nieuwsbrieven)

What Laposta does to deliver your newsletter reliably and how fast it goes.