diff --git a/bookwyrm/migrations/0090_emailblocklist.py b/bookwyrm/migrations/0090_emailblocklist.py
new file mode 100644
index 00000000..57e27989
--- /dev/null
+++ b/bookwyrm/migrations/0090_emailblocklist.py
@@ -0,0 +1,29 @@
+# Generated by Django 3.2.4 on 2021-09-08 21:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0089_user_show_suggested_users"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="EmailBlocklist",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("created_date", models.DateTimeField(auto_now_add=True)),
+                ("domain", models.CharField(max_length=255)),
+            ],
+        ),
+    ]
diff --git a/bookwyrm/models/site.py b/bookwyrm/models/site.py
index ef3f7c3c..e3a657cc 100644
--- a/bookwyrm/models/site.py
+++ b/bookwyrm/models/site.py
@@ -123,6 +123,18 @@ class PasswordReset(models.Model):
         return "https://{}/password-reset/{}".format(DOMAIN, self.code)
 
 
+class EmailBlocklist(models.Model):
+    """blocked email addresses"""
+
+    created_date = models.DateTimeField(auto_now_add=True)
+    domain = models.CharField(max_length=255)
+
+    @property
+    def users(self):
+        """find the users associated with this address"""
+        User.objects.filter(email__endswith=f"@{self.domain}")
+
+
 # pylint: disable=unused-argument
 @receiver(models.signals.post_save, sender=SiteSettings)
 def preview_image(instance, *args, **kwargs):