feat(accounts): add Fastmail configuration with Himalaya support

home/accounts/fastmail.nix

@@ -0,0 +1,39 @@
+{config, ...}: {
+  sops = {
+    secrets."accounts/mail/fastmail" = {};
+  };
+  accounts.email = {
+    maildirBasePath = "Mail";
+    accounts = {
+      fastmail = rec {
+        maildir = {
+          path = "fastmail";
+        };
+        primary = true;
+        address = "email@uttarayan.me";
+        userName = address;
+        realName = "Uttarayan Mondal";
+        imap = {
+          host = "imap.fastmail.com";
+          port = 993;
+          tls.enable = true;
+          authentication = "login";
+        };
+        smtp = {
+          host = "smtp.fastmail.com";
+          port = 465;
+          tls.enable = true;
+        };
+        imapnotify = {
+          enable = true;
+        };
+        passwordCommand = ["cat" "${config.sops.secrets."accounts/mail/fastmail".path}"];
+        mbsync = {
+          enable = true;
+          create = "both";
+        };
+      };
+    };
+  };
+  services.mbsync.enable = true;
+}