> For the complete documentation index, see [llms.txt](https://developers.eventmaker.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.eventmaker.io/liquid-documentation/campaign-email.md).

# Campaign email

Eventmaker comes with a powerful language editor for your custom campaign emails. It’s derived from the markup language [Liquid](https://github.com/Shopify/liquid/wiki/Liquid-for-Designers). This page shows you how you can use the custom Eventmaker liquid tags and variables to build your campaign emails.

## Liquid variables

Here are the variables available to use in [Liquid](https://github.com/Shopify/liquid/wiki/Liquid-for-Designers) for the campaign emails :

### {{ receiver }}

```
{
                      "_id" => "54da2651826b77b3770000e6",
               "created_at" => nil,
               "updated_at" => nil,
               "deleted_at" => nil,
                      "uid" => "TESTUID",
                "order_uid" => nil,
                    "email" => "john.smith@acme.com",
               "first_name" => "John",
                "last_name" => "Smith",
                 "position" => "Chief Technical Officer",
             "company_name" => "Acme Company Inc.",
             "phone_number" => "999 888 777",
                  "message" => nil,
          "invitation_code" => nil,
       "person_parent_type" => nil,
      "person_parent_field" => nil,
         "person_parent_id" => nil,
    "facebook_profile_link" => nil,
                 "event_id" => nil,
        "guest_category_id" => nil,
              "blacklisted" => false,
         "blacklist_reason" => nil,
               "registered" => false,
         "campaign_list_id" => nil,
           "guest_metadata" => {}
}
```

### {{ event }}

```
{
             "title" => "New Year's Eve 2015",
         "organizer" => "Eventmaker Developers",
       "description" => "This event has not begun yet",
          "timezone" => "Paris",
                "id" => "5408886b4f6905cb83000001",
             "photo" => nil,
    "photo_original" => nil,
        "start_date" => Wed, 31 Dec 2014 22:00:00 CET +01:00,
          "end_date" => Thu, 01 Jan 2015 07:00:00 CET +01:00
}
```

### {{ email\_url }}

```
"#fake_preview_email_url"
```

## Liquid tags

Along with the native liquid tags, some new ones have been made available for you to build your custom campaign emails.

### Create a new guest

Use this tag to create a new guest. The identifier below must be replaced with a guest category id.

```
{% registration_form_link "5408886b4f6905cb83000023" %}
```

**Important :**

* Will be not possible to use unique email in the event, or in the same category (invitee email already exists)
* You should be careful if you do a second emailing on the same database, because your invitee is still in your to\_be\_invited segment
* You can registered several guests
* Do not prefill the UID in your form

### Convert a guest

Use this tag to convert a guest. You can also transfer it to another category with the extension field below

```
{{ guest.registration_form_url }}&guest_category_id=5408886b4f6905cb83000023
```

**Important :**

* The guest is converted. It is not anymore in invitee
* You can registered only one guest

### Website

When using Eventmaker Website feature, you can offer your imported guests to register directly into your website with the following tag :

```
{% website_url 'registration' %}
```

With `registration` being the path to your website page. You can also use this tag to point to any of your website pages that don’t contain a registration form.

### Inline image url

inline attach in the mail the image passed as parameter.

```
<img src="{%inline_image_url "url_of_the_image" %}" />
```