diff --git a/channel.cpp b/channel.cpp
index 483d2a3..008d70c 100644
--- a/channel.cpp
+++ b/channel.cpp
@@ -329,7 +329,7 @@ struct t_channel *channel__new(struct t_account *account,
     new_channel->omemo.bundle_requests = weechat_hashtable_new(64,
             WEECHAT_HASHTABLE_STRING, WEECHAT_HASHTABLE_POINTER, NULL, NULL);
     new_channel->pgp.enabled = 1;
-    new_channel->pgp.id = NULL;
+    new_channel->pgp.ids = new std::remove_pointer<decltype(new_channel->pgp.ids)>::type;
     new_channel->otr.enabled = 0;
 
     new_channel->topic.value = NULL;
@@ -846,8 +846,11 @@ void channel__free(struct t_account *account,
         free(channel->id);
     if (channel->name)
         free(channel->name);
-    if (channel->pgp.id)
-        free(channel->pgp.id);
+    if (channel->pgp.ids)
+    {
+        delete channel->pgp.ids;
+        channel->pgp.ids = nullptr;
+    }
     if (channel->topic.value)
         free(channel->topic.value);
     if (channel->topic.creator)
@@ -1164,14 +1167,14 @@ int channel__send_message(struct t_account *account, struct t_channel *channel,
 
         channel__set_transport(channel, CHANNEL_TRANSPORT_OMEMO, 0);
     }
-    else if (channel->pgp.enabled && channel->pgp.id)
+    else if (channel->pgp.enabled && channel->pgp.ids)
     {
         xmpp_stanza_t *message__x = xmpp_stanza_new(account->context);
         xmpp_stanza_set_name(message__x, "x");
         xmpp_stanza_set_ns(message__x, "jabber:x:encrypted");
 
         xmpp_stanza_t *message__x__text = xmpp_stanza_new(account->context);
-        char *ciphertext = pgp__encrypt(channel->buffer, account->pgp, account_pgp_keyid(account), channel->pgp.id, body);
+        char *ciphertext = pgp__encrypt(channel->buffer, account->pgp, account_pgp_keyid(account), std::vector(channel->pgp.ids->begin(), channel->pgp.ids->end()), body);
         if (ciphertext)
             xmpp_stanza_set_text(message__x__text, ciphertext);
         else
@@ -1238,7 +1241,7 @@ int channel__send_message(struct t_account *account, struct t_channel *channel,
                     const char *, int ret, const char *out, const char *err) {
                 auto task = static_cast<const message_task*>(pointer);
                 if (!task) return WEECHAT_RC_ERROR;
-                
+
                 if (ret == 0)
                 {
                     const std::string_view prefix = "content-type: ";
diff --git a/channel.hh b/channel.hh
index 3819d24..a9b6799 100644
--- a/channel.hh
+++ b/channel.hh
@@ -5,6 +5,8 @@
 #pragma once
 
 #include <ctime>
+#include <unordered_set>
+#include <string>
 
 #define CHANNEL_MEMBERS_SPEAKING_LIMIT 128
 
@@ -73,7 +75,7 @@ struct t_channel
     } omemo;
     struct {
         int enabled;
-        char *id;
+        std::unordered_set<std::string> *ids;
     } pgp;
     struct {
         int enabled;
diff --git a/command.cpp b/command.cpp
index e8e769d..34392fa 100644
--- a/command.cpp
+++ b/command.cpp
@@ -833,7 +833,7 @@ int command__pgp(const void *pointer, void *data,
     {
         keyid = argv_eol[1];
 
-        ptr_channel->pgp.id = strdup(keyid);
+        ptr_channel->pgp.ids->emplace(keyid);
     }
     ptr_channel->omemo.enabled = 0;
     ptr_channel->pgp.enabled = 1;
diff --git a/connection.cpp b/connection.cpp
index 686dc78..7b99cd8 100644
--- a/connection.cpp
+++ b/connection.cpp
@@ -220,7 +220,7 @@ int connection__presence_handler(xmpp_conn_t *conn, xmpp_stanza_t *stanza, void
                 {
                     user->profile.pgp_id = pgp__verify(channel->buffer, account->pgp, signature->data());
                     if (channel->type != CHANNEL_TYPE_MUC)
-                        channel->pgp.id = user->profile.pgp_id;
+                        channel->pgp.ids->emplace(user->profile.pgp_id);
                 }
 
                 if (weechat_strcasecmp(role.data(), "none") == 0)
@@ -253,7 +253,7 @@ int connection__presence_handler(xmpp_conn_t *conn, xmpp_stanza_t *stanza, void
             {
                 user->profile.pgp_id = pgp__verify(channel->buffer, account->pgp, signature->data());
                 if (channel->type != CHANNEL_TYPE_MUC)
-                    channel->pgp.id = user->profile.pgp_id;
+                    channel->pgp.ids->emplace(user->profile.pgp_id);
             }
 
             if (user->profile.role)
diff --git a/pgp.cpp b/pgp.cpp
index 4c2ca98..c55e383 100644
--- a/pgp.cpp
+++ b/pgp.cpp
@@ -76,7 +76,7 @@ void pgp__free(struct t_pgp *pgp)
     }
 }
 
-char *pgp__encrypt(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *source, const char *target, const char *message)
+char *pgp__encrypt(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *source, std::vector<std::string>&& targets, const char *message)
 {
     std::string encrypted;
     gpgme_key_t keys[3] = {NULL,NULL,NULL};
@@ -99,9 +99,12 @@ char *pgp__encrypt(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *s
     }
 
     /* Encrypt data. */
-    err = gpgme_get_key(pgp->gpgme, target, &keys[0], false);
-    if (err) {
-        goto encrypt_finish;
+    for (const std::string& target : targets)
+    {
+        err = gpgme_get_key(pgp->gpgme, target.data(), &keys[0], false);
+        if (err) {
+            goto encrypt_finish;
+        }
     }
     err = gpgme_get_key(pgp->gpgme, source, &keys[1], false);
     if (err) {
diff --git a/pgp.hh b/pgp.hh
index 7b4faff..fbcb276 100644
--- a/pgp.hh
+++ b/pgp.hh
@@ -5,6 +5,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 
 extern const char *PGP_ADVICE;
 
@@ -20,7 +21,7 @@ void pgp__free(struct t_pgp *pgp);
 
 char *pgp__decrypt(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *ciphertext);
 
-char *pgp__encrypt(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *source, const char *target, const char *message);
+char *pgp__encrypt(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *source, std::vector<std::string>&& target, const char *message);
 
 char *pgp__verify(struct t_gui_buffer *buffer, struct t_pgp *pgp, const char *certificate);