diff --git a/accounts/utils.py b/accounts/utils.py
index df0a5fe..043a5c3 100644
--- a/accounts/utils.py
+++ b/accounts/utils.py
@@ -45,9 +45,9 @@ def send_password_changed_email(request):
     sender = settings.DEFAULT_FROM_EMAIL
 
     send_mail(
-        subject="[Hostea] Password changed",
+        subject="[Gna!] Password changed",
         message=body,
-        from_email=f"No reply Hostea<{sender}>",
+        from_email=f"No reply Gna!<{sender}>",
         recipient_list=[email],
     )
 
@@ -72,9 +72,9 @@ def send_password_reset_email(request, challenge):
     sender = settings.DEFAULT_FROM_EMAIL
 
     send_mail(
-        subject="[Hostea] Password reset link",
+        subject="[Gna!] Password reset link",
         message=body,
-        from_email=f"No reply Hostea<{sender}>",
+        from_email=f"No reply Gna!<{sender}>",
         recipient_list=[email],
     )
 
@@ -99,9 +99,9 @@ def send_verification_email(request, challenge):
     sender = settings.DEFAULT_FROM_EMAIL
 
     send_mail(
-        subject="[Hostea] Please confirm your email address",
+        subject="[Gna!] Please confirm your email address",
         message=body,
-        from_email=f"No reply Hostea<{sender}>",
+        from_email=f"No reply Gna!<{sender}>",
         recipient_list=[email],
     )
 
diff --git a/billing/templates/billing/emails/payment-receipt.txt b/billing/templates/billing/emails/payment-receipt.txt
index f2477c0..0c3c86f 100644
--- a/billing/templates/billing/emails/payment-receipt.txt
+++ b/billing/templates/billing/emails/payment-receipt.txt
@@ -1,11 +1,11 @@
 Hello {{ username }}!
 
 
-This is a receipt for your latest Hostea payment.
+This is a receipt for your latest Gna! payment.
 
 -----------------------------------------------------
 
-Hostea Receipt - {{payment.date.month}}/{{payment.date.day}}/{{payment.date.year}}
+Gna! Receipt - {{payment.date.month}}/{{payment.date.day}}/{{payment.date.year}}
 
 - Instance Name: {{ payment.instance_name }}
 - Configuration: {{payment.instance_configuration_id.name}}
@@ -19,4 +19,4 @@ To view the receipt online, please see the following link:
 We appreciate your business!
 
 Cheers,
-Hostea team
+Gna! team
diff --git a/billing/views.py b/billing/views.py
index 403e4dd..78e6164 100644
--- a/billing/views.py
+++ b/billing/views.py
@@ -128,9 +128,9 @@ def payment_success(request, payment_public_id):
     sender = settings.DEFAULT_FROM_EMAIL
 
     send_mail(
-        subject="[Hostea] Payment receipt your Hostea VM",
+        subject="[Gna!] Payment receipt your Hostea VM",
         message=body,
-        from_email=f"No reply Hostea<{sender}>",  # TODO read from settings.py
+        from_email=f"No reply Gna!<{sender}>",  # TODO read from settings.py
         recipient_list=[email],
     )
 
diff --git a/infrastructure/utils.py b/infrastructure/utils.py
index 5729bc0..8e370d4 100644
--- a/infrastructure/utils.py
+++ b/infrastructure/utils.py
@@ -71,9 +71,9 @@ class Worker(Thread):
         sender = settings.DEFAULT_FROM_EMAIL
 
         send_mail(
-            subject="[Hostea] Your Hostea instance is now online!",
+            subject="[Gna!] Your Gna! instance is now online!",
             message=body,
-            from_email=f"No reply Hostea<{sender}>",  # TODO read from settings.py
+            from_email=f"No reply Gna!<{sender}>",  # TODO read from settings.py
             recipient_list=[email],
         )
         job.delete()
diff --git a/infrastructure/views.py b/infrastructure/views.py
index 91c3695..066a081 100644
--- a/infrastructure/views.py
+++ b/infrastructure/views.py
@@ -69,9 +69,9 @@ def create_instance(request, instance_name: str):
         sender = settings.DEFAULT_FROM_EMAIL
 
         send_mail(
-            subject="[Hostea] Gitea admin credentials",
+            subject="[Gna!] Gitea admin credentials",
             message=body,
-            from_email=f"No reply Hostea<{sender}>",  # TODO read from settings.py
+            from_email=f"No reply Gna!<{sender}>",  # TODO read from settings.py
             recipient_list=[request.user.email],
         )