diff --git a/app/config.py b/app/config.py
index 2cc6e73d..ff54a834 100644
--- a/app/config.py
+++ b/app/config.py
@@ -349,3 +349,6 @@ PGP_SENDER_PRIVATE_KEY_PATH = os.environ.get("PGP_SENDER_PRIVATE_KEY_PATH")
 if PGP_SENDER_PRIVATE_KEY_PATH:
     with open(get_abs_path(PGP_SENDER_PRIVATE_KEY_PATH)) as f:
         PGP_SENDER_PRIVATE_KEY = f.read()
+
+# the signer address that signes outgoing encrypted emails
+PGP_SIGNER = os.environ.get("PGP_SIGNER")
diff --git a/app/dashboard/templates/dashboard/mailbox_detail.html b/app/dashboard/templates/dashboard/mailbox_detail.html
index 648e1df4..17b0f62e 100644
--- a/app/dashboard/templates/dashboard/mailbox_detail.html
+++ b/app/dashboard/templates/dashboard/mailbox_detail.html
@@ -85,7 +85,10 @@
               Pretty Good Privacy (PGP)
               <div class="small-text mt-1">
                 By importing your PGP Public Key into SimpleLogin, all emails sent to {{ mailbox.email }} are
-                <b>encrypted</b> with your key.
+                <b>encrypted</b> with your key. <br>
+                {% if PGP_SIGNER %}
+                  All forwarded emails will be signed with <b>{{ PGP_SIGNER }}</b>.
+                {% endif %}
               </div>
             </div>
 
diff --git a/server.py b/server.py
index e82d5ef6..e4f48263 100644
--- a/server.py
+++ b/server.py
@@ -52,6 +52,7 @@ from app.config import (
     get_abs_path,
     PADDLE_MONTHLY_PRODUCT_IDS,
     PADDLE_YEARLY_PRODUCT_IDS,
+    PGP_SIGNER,
 )
 from app.dashboard.base import dashboard_bp
 from app.developer.base import developer_bp
@@ -475,6 +476,7 @@ def jinja2_filter(app):
             LANDING_PAGE_URL=LANDING_PAGE_URL,
             STATUS_PAGE_URL=STATUS_PAGE_URL,
             SUPPORT_EMAIL=SUPPORT_EMAIL,
+            PGP_SIGNER=PGP_SIGNER,
         )