diff --git a/src/features/chatstate.rs b/src/features/chatstate.rs
index daee3de13..ee22e7403 100644
--- a/src/features/chatstate.rs
+++ b/src/features/chatstate.rs
@@ -8,6 +8,7 @@ use wacore_binary::jid::Jid;
 
 /// Chat state type for typing indicators.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, StringEnum)]
+#[non_exhaustive]
 pub enum ChatStateType {
     #[str = "composing"]
     Composing,
diff --git a/src/features/community.rs b/src/features/community.rs
index e79fbb988..696444093 100644
--- a/src/features/community.rs
+++ b/src/features/community.rs
@@ -20,6 +20,7 @@ use wacore_binary::jid::Jid;
 
 /// Classification of a group within the community hierarchy.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum GroupType {
     /// Regular standalone group (not part of a community).
     Default,
@@ -34,7 +35,7 @@ pub enum GroupType {
 }
 
 /// Options for creating a new community.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct CreateCommunityOptions {
     pub name: String,
     pub description: Option<String>,
@@ -59,14 +60,14 @@ impl CreateCommunityOptions {
 }
 
 /// Result of creating a community.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct CreateCommunityResult {
     /// JID of the created community parent group.
     pub gid: Jid,
 }
 
 /// A subgroup within a community.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct CommunitySubgroup {
     pub id: Jid,
     pub subject: String,
@@ -76,14 +77,14 @@ pub struct CommunitySubgroup {
 }
 
 /// Result of linking subgroups to a community.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct LinkSubgroupsResult {
     pub linked_jids: Vec<Jid>,
     pub failed_groups: Vec<(Jid, u32)>,
 }
 
 /// Result of unlinking subgroups from a community.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct UnlinkSubgroupsResult {
     pub unlinked_jids: Vec<Jid>,
     pub failed_groups: Vec<(Jid, u32)>,
diff --git a/src/features/groups.rs b/src/features/groups.rs
index 192f31156..ac94fde59 100644
--- a/src/features/groups.rs
+++ b/src/features/groups.rs
@@ -18,7 +18,7 @@ pub use wacore::iq::groups::{
     ParticipantChangeResponse,
 };
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GroupMetadata {
     pub id: Jid,
     pub subject: String,
@@ -62,7 +62,7 @@ pub struct GroupMetadata {
     pub allow_non_admin_sub_group_creation: bool,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GroupParticipant {
     pub jid: Jid,
     pub phone_number: Option<Jid>,
@@ -108,7 +108,7 @@ impl From<GroupInfoResponse> for GroupMetadata {
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct CreateGroupResult {
     pub gid: Jid,
 }
diff --git a/src/features/newsletter.rs b/src/features/newsletter.rs
index 09e270ac7..80055f662 100644
--- a/src/features/newsletter.rs
+++ b/src/features/newsletter.rs
@@ -20,6 +20,7 @@ use waproto::whatsapp as wa;
 // Types
 
 #[derive(Debug, Clone, PartialEq, Eq, StringEnum)]
+#[non_exhaustive]
 pub enum NewsletterMessageType {
     #[str = "text"]
     Text,
@@ -40,14 +41,16 @@ pub enum NewsletterMessageType {
 }
 
 /// Newsletter verification status.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum NewsletterVerification {
     Verified,
     Unverified,
 }
 
 /// Newsletter state.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum NewsletterState {
     Active,
     Suspended,
@@ -55,7 +58,8 @@ pub enum NewsletterState {
 }
 
 /// The viewer's role in a newsletter.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum NewsletterRole {
     Owner,
     Admin,
@@ -64,7 +68,7 @@ pub enum NewsletterRole {
 }
 
 /// Metadata for a newsletter (channel).
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct NewsletterMetadata {
     pub jid: Jid,
     pub name: String,
diff --git a/src/features/presence.rs b/src/features/presence.rs
index 94411800a..a3dd79436 100644
--- a/src/features/presence.rs
+++ b/src/features/presence.rs
@@ -17,6 +17,7 @@ pub enum PresenceError {
 
 /// Presence status for online/offline state.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, StringEnum)]
+#[non_exhaustive]
 pub enum PresenceStatus {
     #[str = "available"]
     Available,
diff --git a/src/features/status.rs b/src/features/status.rs
index 61b9ec751..33b8faf93 100644
--- a/src/features/status.rs
+++ b/src/features/status.rs
@@ -9,6 +9,7 @@ use crate::upload::UploadResponse;
 /// Privacy setting sent in the `<meta>` node of the status stanza.
 /// Matches WhatsApp Web's `status_setting` attribute.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, StringEnum)]
+#[non_exhaustive]
 pub enum StatusPrivacySetting {
     /// Send to all contacts in address book.
     #[string_default]
@@ -48,7 +49,7 @@ impl<'a> Status<'a> {
         text: &str,
         background_argb: u32,
         font: i32,
-        recipients: Vec<Jid>,
+        recipients: &[Jid],
         options: StatusSendOptions,
     ) -> Result<SendResult, anyhow::Error> {
         let message = wa::Message {
@@ -75,7 +76,7 @@ impl<'a> Status<'a> {
         upload: &UploadResponse,
         thumbnail: Vec<u8>,
         caption: Option<&str>,
-        recipients: Vec<Jid>,
+        recipients: &[Jid],
         options: StatusSendOptions,
     ) -> Result<SendResult, anyhow::Error> {
         let message = wa::Message {
@@ -109,7 +110,7 @@ impl<'a> Status<'a> {
         thumbnail: Vec<u8>,
         duration_seconds: u32,
         caption: Option<&str>,
-        recipients: Vec<Jid>,
+        recipients: &[Jid],
         options: StatusSendOptions,
     ) -> Result<SendResult, anyhow::Error> {
         let message = wa::Message {
@@ -140,7 +141,7 @@ impl<'a> Status<'a> {
     pub async fn send_raw(
         &self,
         message: wa::Message,
-        recipients: Vec<Jid>,
+        recipients: &[Jid],
         options: StatusSendOptions,
     ) -> Result<SendResult, anyhow::Error> {
         self.client
@@ -155,7 +156,7 @@ impl<'a> Status<'a> {
     pub async fn revoke(
         &self,
         message_id: impl Into<String>,
-        recipients: Vec<Jid>,
+        recipients: &[Jid],
         options: StatusSendOptions,
     ) -> Result<SendResult, anyhow::Error> {
         let message_id = message_id.into();
@@ -187,10 +188,10 @@ impl Client {
     /// # Example
     /// ```no_run
     /// # async fn example(client: &whatsapp_rust::Client) -> anyhow::Result<()> {
-    /// let recipients = vec![whatsapp_rust::Jid::pn("15551234567")];
+    /// let recipients = [whatsapp_rust::Jid::pn("15551234567")];
     /// let id = client
     ///     .status()
-    ///     .send_text("Hello!", 0xFF1E6E4F, 0, recipients, Default::default())
+    ///     .send_text("Hello!", 0xFF1E6E4F, 0, &recipients, Default::default())
     ///     .await?;
     /// # Ok(())
     /// # }
diff --git a/src/send.rs b/src/send.rs
index 018a2f397..987e68480 100644
--- a/src/send.rs
+++ b/src/send.rs
@@ -29,7 +29,7 @@ pub struct SendOptions {
 }
 
 /// Result of a successfully sent message.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct SendResult {
     pub message_id: String,
     pub to: Jid,
@@ -49,6 +49,7 @@ impl SendResult {
 
 /// Duration for pinned messages. Default is 7 days (matches WA Web).
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+#[non_exhaustive]
 pub enum PinDuration {
     Hours24,
     #[default]
@@ -68,6 +69,7 @@ impl PinDuration {
 
 /// Specifies who is revoking (deleting) the message.
 #[derive(Debug, Clone, PartialEq, Eq, Default)]
+#[non_exhaustive]
 pub enum RevokeType {
     /// The message sender deleting their own message.
     #[default]
@@ -275,7 +277,7 @@ impl Client {
     pub(crate) async fn send_status_message(
         &self,
         message: wa::Message,
-        recipients: Vec<Jid>,
+        recipients: &[Jid],
         options: crate::features::status::StatusSendOptions,
     ) -> Result<SendResult, anyhow::Error> {
         use wacore::client::context::GroupInfo;
@@ -326,7 +328,7 @@ impl Client {
                     ));
                 }
             } else {
-                resolved_recipients.push(jid);
+                resolved_recipients.push(jid.clone());
             }
         }