diff --git a/Cargo.lock b/Cargo.lock
index 6483270..d0e4b4a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -251,6 +251,12 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40e38929add23cdf8a366df9b0e088953150724bcbe5fc330b0d8eb3b328eec8"
 
+[[package]]
+name = "build-rs"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b00b8763668c99f8d9101b8a0dd82106f58265464531a79b2cef0d9a30c17dd2"
+
 [[package]]
 name = "bumpalo"
 version = "3.11.1"
@@ -327,6 +333,16 @@ dependencies = [
  "cipher",
 ]
 
+[[package]]
+name = "cfg-expr"
+version = "0.15.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b40ccee03b5175c18cde8f37e7d2a33bcef6f8ec8f7cc0d81090d1bb380949c9"
+dependencies = [
+ "smallvec",
+ "target-lexicon",
+]
+
 [[package]]
 name = "cfg-if"
 version = "0.1.10"
@@ -502,6 +518,15 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
+[[package]]
+name = "conv"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ff10625fd0ac447827aa30ea8b861fead473bb60aeb73af6c1c58caf0d1299"
+dependencies = [
+ "custom_derive",
+]
+
 [[package]]
 name = "convert_case"
 version = "0.5.0"
@@ -628,6 +653,16 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "cstr-argument"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6bd9c8e659a473bce955ae5c35b116af38af11a7acb0b480e01f3ed348aeb40"
+dependencies = [
+ "cfg-if 1.0.0",
+ "memchr 2.5.0",
+]
+
 [[package]]
 name = "curve25519-dalek"
 version = "3.2.0"
@@ -669,6 +704,12 @@ dependencies = [
  "syn 2.0.15",
 ]
 
+[[package]]
+name = "custom_derive"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef8ae57c4978a2acd8b869ce6b9ca1dfe817bff704c220209fdef2c0b75a01b9"
+
 [[package]]
 name = "cxx"
 version = "1.0.82"
@@ -1268,6 +1309,47 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "gpg-error"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d89aaeddbfb92313378c58e98abadaaa34082b3855f1d455576eeeda08bd592c"
+dependencies = [
+ "libgpg-error-sys",
+]
+
+[[package]]
+name = "gpgme"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57539732fbe58eacdb984734b72b470ed0bca3ab7a49813271878567025ac44f"
+dependencies = [
+ "bitflags 1.3.2",
+ "cfg-if 1.0.0",
+ "conv",
+ "cstr-argument",
+ "gpg-error",
+ "gpgme-sys",
+ "libc",
+ "memoffset",
+ "once_cell",
+ "smallvec",
+ "static_assertions",
+]
+
+[[package]]
+name = "gpgme-sys"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "509223d659c06e4a26229437d6ac917723f02d31917c86c6ecd50e8369741cf7"
+dependencies = [
+ "build-rs",
+ "libc",
+ "libgpg-error-sys",
+ "system-deps",
+ "winreg",
+]
+
 [[package]]
 name = "group"
 version = "0.13.0"
@@ -1760,6 +1842,17 @@ version = "0.2.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
 
+[[package]]
+name = "libgpg-error-sys"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97079310f39c835d3bd73578379d040f779614bb331c7ffbb6630fee6420290"
+dependencies = [
+ "build-rs",
+ "system-deps",
+ "winreg",
+]
+
 [[package]]
 name = "libm"
 version = "0.2.7"
@@ -2413,7 +2506,7 @@ dependencies = [
 [[package]]
 name = "pimalaya-email"
 version = "0.14.1-beta"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "advisory-lock",
  "ammonia",
@@ -2460,10 +2553,11 @@ dependencies = [
 [[package]]
 name = "pimalaya-email-tpl"
 version = "0.3.2-beta"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "async-recursion",
  "chumsky 0.9.0",
+ "gpgme",
  "log",
  "mail-builder",
  "mail-parser",
@@ -2479,7 +2573,7 @@ dependencies = [
 [[package]]
 name = "pimalaya-keyring"
 version = "0.0.6-beta"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "keyring",
  "log",
@@ -2489,7 +2583,7 @@ dependencies = [
 [[package]]
 name = "pimalaya-oauth2"
 version = "0.0.5-beta"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "log",
  "oauth2",
@@ -2502,7 +2596,7 @@ dependencies = [
 [[package]]
 name = "pimalaya-pgp"
 version = "0.0.1"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "async-recursion",
  "futures",
@@ -2522,7 +2616,7 @@ dependencies = [
 [[package]]
 name = "pimalaya-process"
 version = "0.0.6-beta"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "log",
  "thiserror",
@@ -2532,7 +2626,7 @@ dependencies = [
 [[package]]
 name = "pimalaya-secret"
 version = "0.0.6-beta"
-source = "git+https://git.sr.ht/~soywod/pimalaya#86ed502bba59fa70e3f3352b40c0552a5a870c01"
+source = "git+https://git.sr.ht/~soywod/pimalaya#5241ece85e1ed8837bec4076664604c566d45bff"
 dependencies = [
  "log",
  "pimalaya-keyring",
@@ -3305,6 +3399,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
+
 [[package]]
 name = "string_cache"
 version = "0.8.4"
@@ -3371,6 +3471,25 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "system-deps"
+version = "6.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30c2de8a4d8f4b823d634affc9cd2a74ec98c53a756f317e529a48046cbf71f3"
+dependencies = [
+ "cfg-expr",
+ "heck",
+ "pkg-config",
+ "toml",
+ "version-compare",
+]
+
+[[package]]
+name = "target-lexicon"
+version = "0.12.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d0e916b1148c8e263850e1ebcbd046f333e0683c724876bb0da63ea4373dc8a"
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
@@ -3799,6 +3918,12 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
+[[package]]
+name = "version-compare"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "579a42fc0b8e0c63b76519a339be31bed574929511fa53c1a3acae26eb258f29"
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
diff --git a/Cargo.toml b/Cargo.toml
index ca87eb8..a809d96 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,6 +20,7 @@ default = ["imap-backend", "smtp-sender"]
 # backends
 imap-backend = ["pimalaya-email/imap-backend"]
 notmuch-backend = ["pimalaya-email/notmuch-backend"]
+gpg = ["pimalaya-email/gpg"]
 
 # senders
 smtp-sender = ["pimalaya-email/smtp-sender"]
diff --git a/flake.nix b/flake.nix
index 0184628..7a1ac52 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,6 +35,7 @@
         in
         {
           default = pkgs.mkShell {
+            nativeBuildInputs = with pkgs; [ pkg-config ];
             buildInputs = with pkgs; [
               # Nix env
               rnix-lsp
@@ -45,6 +46,9 @@
 
               # notmuch
               notmuch
+
+              # gpg
+              gpgme
             ];
           };
         };
diff --git a/src/config/prelude.rs b/src/config/prelude.rs
index 5dd28f6..863d69b 100644
--- a/src/config/prelude.rs
+++ b/src/config/prelude.rs
@@ -1,3 +1,5 @@
+#[cfg(feature = "gpg")]
+use pimalaya_email::account::GpgConfig;
 #[cfg(feature = "notmuch-backend")]
 use pimalaya_email::backend::NotmuchConfig;
 #[cfg(feature = "imap-backend")]
@@ -398,6 +400,9 @@ pub enum PgpConfigDef {
     None,
     #[serde(with = "PgpNativeConfigDef")]
     Native(PgpNativeConfig),
+    #[cfg(feature = "gpg")]
+    #[serde(with = "GpgConfigDef")]
+    Gpg(GpgConfig),
 }
 
 #[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
@@ -424,3 +429,8 @@ pub enum PgpNativeSecretKeyDef {
     #[serde(with = "EntryDef")]
     Keyring(Entry),
 }
+
+#[cfg(feature = "gpg")]
+#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(remote = "GpgConfig", rename_all = "kebab-case")]
+pub struct GpgConfigDef;