diff --git a/entropy/mail/neomutt/mailsettings b/entropy/mail/neomutt/mailsettings
index 03d0a78..b9bc1cf 160000
--- a/entropy/mail/neomutt/mailsettings
+++ b/entropy/mail/neomutt/mailsettings
@@ -1 +1 @@
-Subproject commit 03d0a78203b5aa87c49ee84274cd90f45b767345
+Subproject commit b9bc1cf58e152a922d40624222b9c41d5746cfe7
diff --git a/entropy/nixos/configuration.nix b/entropy/nixos/configuration.nix
index 903a30d..0ff5fb2 100644
--- a/entropy/nixos/configuration.nix
+++ b/entropy/nixos/configuration.nix
@@ -211,6 +211,8 @@
     neomutt urlview
     notmuch
     aspell # spell checking in mail
+    # personal mailing
+    thunderbirdPackages.thunderbird-115
     ## Rust
     rustup
     cargo-flamegraph
diff --git a/entropy/nixos/flake.lock b/entropy/nixos/flake.lock
index df56566..e7b6641 100644
--- a/entropy/nixos/flake.lock
+++ b/entropy/nixos/flake.lock
@@ -23,11 +23,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1689060619,
+        "lastModified": 1689320556,
         "narHash": "sha256-vODUkZLWFVCvo1KPK3dC2CbXjxa9antEn5ozwlcTr48=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "44bc025007e5fcc10dbc3d9f96dcbf06fc0e8c1c",
+        "rev": "d4ea64f2063820120c05f6ba93ee02e6d4671d6b",
         "type": "github"
       },
       "original": {
@@ -39,11 +39,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689137672,
-        "narHash": "sha256-QZoHxr0a73x6rQcAo5CiwYpysHbSnk7lAR8/16um7mM=",
+        "lastModified": 1689431009,
+        "narHash": "sha256-hPgQCRWP5q/Xc4qOIP3c2krR9nQua78+t9EDiuey5nc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "98da3dd0de6660d4abed7bb74e748694bd803413",
+        "rev": "af8279f65fe71ce5a448408034a8c06e2b4b2c66",
         "type": "github"
       },
       "original": {
@@ -62,11 +62,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1689192006,
-        "narHash": "sha256-QM0f0d8oPphOTYJebsHioR9+FzJcy1QNIzREyubB91U=",
+        "lastModified": 1689444953,
+        "narHash": "sha256-0o56bfb2LC38wrinPdCGLDScd77LVcr7CrH1zK7qvDg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2de8efefb6ce7f5e4e75bdf57376a96555986841",
+        "rev": "8acef304efe70152463a6399f73e636bcc363813",
         "type": "github"
       },
       "original": {