diff --git a/src/api_data/server_config.rs b/src/api_data/server_config.rs
index 7bbb8b9..14e3d45 100644
--- a/src/api_data/server_config.rs
+++ b/src/api_data/server_config.rs
@@ -3,7 +3,8 @@
 //! @author Pierre Hubert
 use serde::Serialize;
 
-use crate::constants::{ALLOWED_CONVERSATION_FILES_TYPES, conservation_policy, CONVERSATION_FILES_MAX_SIZE, CONVERSATION_WRITING_EVENT_INTERVAL, CONVERSATION_WRITING_EVENT_LIFETIME, MAX_CONVERSATION_MESSAGE_LENGTH, MIN_CONVERSATION_MESSAGE_LENGTH, MIN_SUPPORTED_MOBILE_VERSION, password_policy};
+use crate::constants::{conservation_policy, MIN_SUPPORTED_MOBILE_VERSION, password_policy};
+use crate::constants::conversations::{ALLOWED_CONVERSATION_FILES_TYPES, CONVERSATION_FILES_MAX_SIZE, CONVERSATION_WRITING_EVENT_INTERVAL, CONVERSATION_WRITING_EVENT_LIFETIME, MAX_CONVERSATION_MESSAGE_LENGTH, MIN_CONVERSATION_MESSAGE_LENGTH};
 use crate::data::config::conf;
 
 #[derive(Serialize)]
@@ -28,6 +29,16 @@ struct DataConservationPolicy {
     min_likes_lifetime: u64,
 }
 
+#[derive(Serialize)]
+struct ConversationsPolicy {
+    min_conversation_message_len: usize,
+    max_conversation_message_len: usize,
+    allowed_conversation_files_type: [&'static str; 17],
+    conversation_files_max_size: usize,
+    conversation_writing_event_interval: u64,
+    conversation_writing_event_lifetime: u64,
+}
+
 #[derive(Serialize)]
 pub struct ServerConfig {
     min_supported_mobile_version: &'static str,
@@ -37,13 +48,7 @@ pub struct ServerConfig {
     android_direct_download_url: String,
     password_policy: PasswordPolicy,
     data_conservation_policy: DataConservationPolicy,
-
-    min_conversation_message_len: usize,
-    max_conversation_message_len: usize,
-    allowed_conversation_files_type: [&'static str; 17],
-    conversation_files_max_size: usize,
-    conversation_writing_event_interval: u64,
-    conversation_writing_event_lifetime: u64,
+    conversations_policy: ConversationsPolicy,
 }
 
 impl ServerConfig {
@@ -55,13 +60,6 @@ impl ServerConfig {
             play_store_url: &conf().play_store_url,
             android_direct_download_url: conf().android_direct_download_url.clone(),
 
-            min_conversation_message_len: MIN_CONVERSATION_MESSAGE_LENGTH,
-            max_conversation_message_len: MAX_CONVERSATION_MESSAGE_LENGTH,
-            allowed_conversation_files_type: ALLOWED_CONVERSATION_FILES_TYPES,
-            conversation_files_max_size: CONVERSATION_FILES_MAX_SIZE,
-            conversation_writing_event_interval: CONVERSATION_WRITING_EVENT_INTERVAL,
-            conversation_writing_event_lifetime: CONVERSATION_WRITING_EVENT_LIFETIME,
-
             password_policy: PasswordPolicy {
                 allow_email_in_password: password_policy::ALLOW_EMAIL_IN_PASSWORD,
                 allow_name_in_password: password_policy::ALLOW_NAME_IN_PASSWORD,
@@ -81,6 +79,15 @@ impl ServerConfig {
                 min_conversation_messages_lifetime: conservation_policy::MIN_CONVERSATION_MESSAGES_LIFETIME.as_secs(),
                 min_likes_lifetime: conservation_policy::MIN_LIKES_LIFETIME.as_secs(),
             },
+
+            conversations_policy: ConversationsPolicy {
+                min_conversation_message_len: MIN_CONVERSATION_MESSAGE_LENGTH,
+                max_conversation_message_len: MAX_CONVERSATION_MESSAGE_LENGTH,
+                allowed_conversation_files_type: ALLOWED_CONVERSATION_FILES_TYPES,
+                conversation_files_max_size: CONVERSATION_FILES_MAX_SIZE,
+                conversation_writing_event_interval: CONVERSATION_WRITING_EVENT_INTERVAL,
+                conversation_writing_event_lifetime: CONVERSATION_WRITING_EVENT_LIFETIME,
+            },
         }
     }
 }
\ No newline at end of file
diff --git a/src/constants.rs b/src/constants.rs
index e3f1227..2f2d9d5 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -164,37 +164,40 @@ pub const CLEAN_UP_INTERVAL: Duration = Duration::from_secs(60 * 60);
 /// Minimal mobile version supported
 pub const MIN_SUPPORTED_MOBILE_VERSION: &str = "1.1.2";
 
-/// Minimum message length
-pub const MIN_CONVERSATION_MESSAGE_LENGTH: usize = 1;
-pub const MAX_CONVERSATION_MESSAGE_LENGTH: usize = 16000;
+/// Conversations constants
+pub mod conversations {
+    /// Minimum message length
+    pub const MIN_CONVERSATION_MESSAGE_LENGTH: usize = 1;
+    pub const MAX_CONVERSATION_MESSAGE_LENGTH: usize = 16000;
 
-/// Allowed files type in conversations
-pub const ALLOWED_CONVERSATION_FILES_TYPES: [&str; 17] = [
-    "image/png", "image/jpeg", "image/gif", "image/bmp",
-    "application/pdf",
-    "audio/mpeg",
-    "video/mp4",
-    "application/zip",
+    /// Allowed files type in conversations
+    pub const ALLOWED_CONVERSATION_FILES_TYPES: [&str; 17] = [
+        "image/png", "image/jpeg", "image/gif", "image/bmp",
+        "application/pdf",
+        "audio/mpeg",
+        "video/mp4",
+        "application/zip",
 
-    // MS Office docs
-    "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
-    "application/vnd.openxmlformats-officedocument.presentationml.presentation",
-    "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        // MS Office docs
+        "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+        "application/vnd.openxmlformats-officedocument.presentationml.presentation",
+        "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
 
-    // Open Office docs
-    "application/vnd.oasis.opendocument.text",
-    "application/vnd.oasis.opendocument.presentation",
-    "application/vnd.oasis.opendocument.spreadsheet",
+        // Open Office docs
+        "application/vnd.oasis.opendocument.text",
+        "application/vnd.oasis.opendocument.presentation",
+        "application/vnd.oasis.opendocument.spreadsheet",
 
-    // Source code docs (UTF-8 encoded)
-    "text/x-csrc", "text/plain", "text/x-c++src"
-];
+        // Source code docs (UTF-8 encoded)
+        "text/x-csrc", "text/plain", "text/x-c++src"
+    ];
 
-/// File maximum size in conversations (10 Mb)
-pub const CONVERSATION_FILES_MAX_SIZE: usize = 10 * 1024 * 1024;
+    /// File maximum size in conversations (10 Mb)
+    pub const CONVERSATION_FILES_MAX_SIZE: usize = 10 * 1024 * 1024;
 
-/// Minimum interval before notifying again that someone is writing
-pub const CONVERSATION_WRITING_EVENT_INTERVAL: u64 = 1;
+    /// Minimum interval before notifying again that someone is writing
+    pub const CONVERSATION_WRITING_EVENT_INTERVAL: u64 = 1;
 
-/// Lifetime of conversation writing event
-pub const CONVERSATION_WRITING_EVENT_LIFETIME: u64 = 3;
\ No newline at end of file
+    /// Lifetime of conversation writing event
+    pub const CONVERSATION_WRITING_EVENT_LIFETIME: u64 = 3;
+}
\ No newline at end of file
diff --git a/src/controllers/conversations_controller.rs b/src/controllers/conversations_controller.rs
index 1616932..e5343bd 100644
--- a/src/controllers/conversations_controller.rs
+++ b/src/controllers/conversations_controller.rs
@@ -12,7 +12,7 @@ use crate::api_data::res_count_unread_conversations::ResultCountUnreadConversati
 use crate::api_data::res_create_conversation::ResCreateConversation;
 use crate::api_data::res_find_private_conversations::ResFindPrivateConversations;
 use crate::api_data::user_is_writing_message_in_conversation::UserIsWritingMessageInConversation;
-use crate::constants::{ALLOWED_CONVERSATION_FILES_TYPES, CONVERSATION_FILES_MAX_SIZE, MAX_CONVERSATION_MESSAGE_LENGTH, MIN_CONVERSATION_MESSAGE_LENGTH};
+use crate::constants::conversations::{ALLOWED_CONVERSATION_FILES_TYPES, CONVERSATION_FILES_MAX_SIZE, MAX_CONVERSATION_MESSAGE_LENGTH, MIN_CONVERSATION_MESSAGE_LENGTH};
 use crate::controllers::user_ws_controller;
 use crate::data::base_request_handler::{BaseRequestHandler, RequestValue};
 use crate::data::conversation::NewConversationSettings;