diff --git a/configs/workhorse/mail-fetcher.nix b/configs/workhorse/mail-fetcher.nix
index c366bcf..82e1057 100644
--- a/configs/workhorse/mail-fetcher.nix
+++ b/configs/workhorse/mail-fetcher.nix
@@ -37,6 +37,11 @@
       source = toString <secrets/mail/siteground/contact>;
       requiredBy = ["fetchmail.service"];
     };
+    "c-base.palo" = {
+      user = config.users.users.mailUser.name;
+      source = toString <secrets/mail/c-base/palo>;
+      requiredBy = ["fetchmail.service"];
+    };
   };
 
   environment.systemPackages = [ pkgs.muchsync ];
@@ -96,6 +101,56 @@
         };
         notmuch.enable = true;
       };
+      c-base = {
+        primary = false;
+        address = "palo@c-base.org";
+        aliases = [ ];
+        realName = "Ingolf Wagner";
+        userName = "palo";
+        passwordCommand = "cat ${toString config.krops.userKeys."c-base.palo".target}";
+        imap = {
+          host = "c-mail.c-base.org";
+          port = 993;
+          # fetched using :  nix-shell -p openssl --run "openssl s_client -connect c-mail.c-base.org:993 -showcerts"
+          tls.certificatesFile =
+            pkgs.writeText "c-base.pem" ''
+              -----BEGIN CERTIFICATE-----
+              MIIFKDCCAxCgAwIBAgIDArgjMA0GCSqGSIb3DQEBDQUAMFQxFDASBgNVBAoTC0NB
+              Y2VydCBJbmMuMR4wHAYDVQQLExVodHRwOi8vd3d3LkNBY2VydC5vcmcxHDAaBgNV
+              BAMTE0NBY2VydCBDbGFzcyAzIFJvb3QwHhcNMTcxMTE1MDkxMjI3WhcNMTkxMTE1
+              MDkxMjI3WjBhMQswCQYDVQQGEwJERTEPMA0GA1UECBMGQmVybGluMQ8wDQYDVQQH
+              EwZCZXJsaW4xFDASBgNVBAoTC2MtYmFzZSBlLlYuMRowGAYDVQQDExFjLW1haWwu
+              Yy1iYXNlLm9yZzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKR3XBxJ
+              72MayCS0D5GCoHcY0TQLs1DQSohCCobRdSowFJzNQw/2lL6bb+Q2rmevZQXuM4vP
+              YbFytvTDmY5y5MNXEqGLfi8D5TcaP/RdXWQU++yUunE6yMdqZNheeXPjM//PnoXG
+              DyT236BovEi3YipUUsLXFiRj+cAjrQE7a2YUs3fjV3P6grMH0V06J6P6+JJvRgp2
+              K33uhKhnKyb3s1tbdbu1KeGozx2ws9lg79XV+Py6PXxP6jTZ2PCsaxs3BThSdmsl
+              vQyk/zoW7tA1m2ntRCoyFHZqfOHsN3UOS/HDRlXqgSf0ah8cPYPsl0ayXhgOv0Tu
+              1PSMt4Ve2GajX8MCAwEAAaOB9TCB8jAMBgNVHRMBAf8EAjAAMA4GA1UdDwEB/wQE
+              AwIDqDA0BgNVHSUELTArBggrBgEFBQcDAgYIKwYBBQUHAwEGCWCGSAGG+EIEAQYK
+              KwYBBAGCNwoDAzAzBggrBgEFBQcBAQQnMCUwIwYIKwYBBQUHMAGGF2h0dHA6Ly9v
+              Y3NwLmNhY2VydC5vcmcvMDgGA1UdHwQxMC8wLaAroCmGJ2h0dHA6Ly9jcmwuY2Fj
+              ZXJ0Lm9yZy9jbGFzczMtcmV2b2tlLmNybDAtBgNVHREEJjAkghFjLW1haWwuYy1i
+              YXNlLm9yZ4IPbWFpbC5jLWJhc2Uub3JnMA0GCSqGSIb3DQEBDQUAA4ICAQCCG73N
+              ztSW6YQBwaYvANv6IormcsGCLqbH6fGhRkuLrUyxNPGD8rm1svhoLGF97kIxn/gz
+              Fnw6i9FLnP5UkMNyUfOVLvKBzBhEG7KWQge4laOWVdHF4iFTg0KCCAK30OwR2Yff
+              RaEQWpecCt9QeTbzgAT0J9Oi3/t1uCGNSu8e4YfNHGRtOf0G0hBokt2ZSQQdy5GK
+              iycZy8kjGOX/QXH8OfpsHlnqG9c/3z8CKg/woFy1jXQV9JB/PSbaO9Q/2VYkk/xK
+              5fN17XyM1YVKtEkJJ0U+az8mmDg63SZUO9viiQdO6VT+Ujkypf1QnEMaCiG1R2Hf
+              BvhiU/KEeHtNaYTZkhevYHHErL6rBNbCx2P8CaiHaC9XR3XeqPbAowBJ8Hg/nxHQ
+              U7zdePSLe2664wWJQGW0dSmmUSKJWEjnMcYsk2tWYcA4c6LfozjdODhRv2SdHuUd
+              yboZgnLJWprUhI78RQ7Tp1SmCQhZkHVc/C9UMxhoX0QguqYFD4II8qTUGG6Khl0a
+              TDFlwPWrRmeZrBhVt1O9Hb/Yyt0vMAej4J6jVkErGCeliipMhlA3gFrsOl0uVMf7
+              u9IDWpuZmAjdYebK/kh2iyj7xEgfNY1yvwryBNJiV5g7jPSkaVleJ/Due8Yl7eVk
+              RamaGp3UnFTUy7gxvWmBYGKIxt3d/TBZnptvMA==
+              -----END CERTIFICATE-----'';
+        };
+        mbsync = {
+          enable = true;
+          create = "both";
+        };
+        notmuch.enable = true;
+      };
       gmail = {
         # for google accounts you have to allow 'less secure apps' in accounts.google.com
         primary = true;
@@ -252,6 +307,7 @@
           {query = "from:jobs2web.com" ; tags = ["+newzealand" "+jobs" "-inbox" ];}
           {query = "from:mailings.gmx.net" ; tags = ["+junk" "-inbox" "-unread"];}
           {query = "from:paypal.de AND subject:Bestätigung"; tags = ["-unread" "+paypal" "+billing"] ;}
+          {query = "to:c-base.org" = ["+cbase"] ;}
 
           {query = "to:renoise@ingolf-wagner.de OR to:root@renoise.com OR from:renoise.com OR to:admin@renoise.com"; tags = ["+renoise"] ;}
           {query = "from:amazon.de OR from:amazon.com AND NOT to:renoise.com"; tags = ["+shop" "+amazon" "+billing"];}