diff --git a/schafkopf/api/api.py b/schafkopf/api/api.py
index 64e0a1e..04bfbf3 100644
--- a/schafkopf/api/api.py
+++ b/schafkopf/api/api.py
@@ -41,7 +41,7 @@ def subscribe_to_schafkopf_rounds(req: SubscribeRequest) -> SubscribeResponse:
 def delete_subscriber_from_mailing_list(email: str) -> SubscribeResponse:
     import boto3
     dynamodb = boto3.resource("dynamodb")
-    email_table.delete(dynamodb, email)
+    email_table.delete(dynamodb, email.lower())
     return SubscribeResponse(email=email)
 
 
diff --git a/schafkopf/api/models.py b/schafkopf/api/models.py
index 1acf052..a14da3f 100644
--- a/schafkopf/api/models.py
+++ b/schafkopf/api/models.py
@@ -12,7 +12,7 @@ class SubscribeRequest(BaseModel):
     email: str
 
     def to_email_item(self) -> EmailItem:
-        return EmailItem(email=self.email)
+        return EmailItem(email=self.email.lower())
 
 
 class SubscribeResponse(BaseModel):