Adding a new Subscribers model to the Wagtail ModelAdmin. Tutorial at: https://learnwagtail.com/tutorials/how-register-django-model-wagtails-modeladmin/

base.py

# ...

INSTALLED_APPS = [
    # ...
    'subscribers',
    'wagtail.contrib.modeladmin',
    # ...
]

# ...

subscribers admin.py

# subscribers/admin.py
from wagtail.contrib.modeladmin.options import (
    ModelAdmin,
    modeladmin_register,
)
from .models import Subscribers


class SubscriberAdmin(ModelAdmin):
    """Subscriber admin."""

    model = Subscribers
    menu_label = "Susbcribers"
    menu_icon = "placeholder"
    menu_order = 290
    add_to_settings_menu = False
    exclude_from_explorer = False
    list_display = ("email", "full_name",)
    search_fields = ("email", "full_name",)

modeladmin_register(SubscriberAdmin) 

subscribers models.py

# subscribers/models.py
from django.db import models


class Subscribers(models.Model):
    """A subscriber model."""

    email = models.CharField(max_length=100, blank=False, null=False, help_text='Email address')
    full_name = models.CharField(max_length=100, blank=False, null=False, help_text='First and last name')

    def __str__(self):
        """Str repr of this object."""
        return self.full_name

    class Meta:  # noqa
        verbose_name = "Susbcriber"
        verbose_name_plural = "Subscribers"

Tutorial: https://learnwagtail.com/tutorials/how-register-django-model-wagtails-modeladmin/

Full Git Commit: CodingForEverybody/learn-wagtail@0026c6f