diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ea09593..c802fd71 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@
 - Ignore all RCPT TO: parameters
   ([#651](https://github.com/chatmail/relay/pull/651))
 
+- Add config parameter for Let's Encrypt ACME email
+  ([#663](https://github.com/chatmail/relay/pull/663))
+
 - Use max username length in newemail.py, not min
   ([#648](https://github.com/chatmail/relay/pull/648))
 
diff --git a/chatmaild/src/chatmaild/config.py b/chatmaild/src/chatmaild/config.py
index ae5f4423..c8762af8 100644
--- a/chatmaild/src/chatmaild/config.py
+++ b/chatmaild/src/chatmaild/config.py
@@ -44,6 +44,7 @@ class Config:
         )
         self.mtail_address = params.get("mtail_address")
         self.disable_ipv6 = params.get("disable_ipv6", "false").lower() == "true"
+        self.acme_email = params.get("acme_email", "")
         self.imap_rawlog = params.get("imap_rawlog", "false").lower() == "true"
         if "iroh_relay" not in params:
             self.iroh_relay = "https://" + params["mail_domain"]
diff --git a/chatmaild/src/chatmaild/ini/chatmail.ini.f b/chatmaild/src/chatmaild/ini/chatmail.ini.f
index a99fb508..d17ceae0 100644
--- a/chatmaild/src/chatmaild/ini/chatmail.ini.f
+++ b/chatmaild/src/chatmaild/ini/chatmail.ini.f
@@ -60,6 +60,9 @@ postfix_reinject_port_incoming = 10026
 # if set to "True" IPv6 is disabled
 disable_ipv6 = False
 
+# Your email adress, which will be used in acmetool to manage Let's Encrypt SSL certificates
+acme_email = 
+
 # Defaults to https://iroh.{{mail_domain}} and running `iroh-relay` on the chatmail
 # service.
 # If you set it to anything else, the service will be disabled
diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py
index da930199..2aad8526 100644
--- a/cmdeploy/src/cmdeploy/__init__.py
+++ b/cmdeploy/src/cmdeploy/__init__.py
@@ -727,6 +727,7 @@ def deploy_chatmail(config_path: Path, disable_mail: bool) -> None:
     # Deploy acmetool to have TLS certificates.
     tls_domains = [mail_domain, f"mta-sts.{mail_domain}", f"www.{mail_domain}"]
     deploy_acmetool(
+        email=config.acme_email,
         domains=tls_domains,
     )