diff --git a/Cargo.lock b/Cargo.lock
index dae5cb9..e00317b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1807,7 +1807,7 @@ dependencies = [
 [[package]]
 name = "imap-codec"
 version = "2.0.0"
-source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#3fdc1f3184ec121823d44b3f39e56b448ac80751"
+source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#b0a80c4826f3d8bf2d2e69f68443c261e62bb40f"
 dependencies = [
  "abnf-core",
  "base64 0.21.5",
@@ -1834,7 +1834,7 @@ dependencies = [
 [[package]]
 name = "imap-types"
 version = "2.0.0"
-source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#3fdc1f3184ec121823d44b3f39e56b448ac80751"
+source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#b0a80c4826f3d8bf2d2e69f68443c261e62bb40f"
 dependencies = [
  "base64 0.21.5",
  "bounded-static",
diff --git a/src/imap/capability.rs b/src/imap/capability.rs
index 37f14df..53d7b7d 100644
--- a/src/imap/capability.rs
+++ b/src/imap/capability.rs
@@ -1,4 +1,5 @@
-use imap_codec::imap_types::core::{Atom, NonEmptyVec};
+use imap_codec::imap_types::command::SelectExamineModifier;
+use imap_codec::imap_types::core::NonEmptyVec;
 use imap_codec::imap_types::extensions::enable::{CapabilityEnable, Utf8Kind};
 use imap_codec::imap_types::response::Capability;
 use std::collections::HashSet;
@@ -90,10 +91,10 @@ impl ClientCapability {
         self.condstore = self.condstore.enable();
     }
 
-    pub fn select_enable(&mut self, atoms: &[Atom]) {
-        for at in atoms.iter() {
-            if at.as_ref().to_uppercase() == "CONDSTORE" {
-                self.enable_condstore();
+    pub fn select_enable(&mut self, mods: &[SelectExamineModifier]) {
+        for m in mods.iter() {
+            match m {
+                SelectExamineModifier::Condstore => self.enable_condstore(),
             }
         }
     }
diff --git a/src/imap/command/authenticated.rs b/src/imap/command/authenticated.rs
index da41182..9b6bb24 100644
--- a/src/imap/command/authenticated.rs
+++ b/src/imap/command/authenticated.rs
@@ -2,7 +2,7 @@ use std::collections::BTreeMap;
 use std::sync::Arc;
 
 use anyhow::{anyhow, bail, Result};
-use imap_codec::imap_types::command::{Command, CommandBody};
+use imap_codec::imap_types::command::{Command, CommandBody, SelectExamineModifier};
 use imap_codec::imap_types::core::{Atom, Literal, NonEmptyVec, QuotedChar};
 use imap_codec::imap_types::datetime::DateTime;
 use imap_codec::imap_types::extensions::enable::CapabilityEnable;
@@ -58,8 +58,8 @@ pub async fn dispatch<'a>(
         } => ctx.status(mailbox, item_names).await,
         CommandBody::Subscribe { mailbox } => ctx.subscribe(mailbox).await,
         CommandBody::Unsubscribe { mailbox } => ctx.unsubscribe(mailbox).await,
-        CommandBody::Select { mailbox, parameters } => ctx.select(mailbox, parameters).await,
-        CommandBody::Examine { mailbox, parameters } => ctx.examine(mailbox, parameters).await,
+        CommandBody::Select { mailbox, modifiers } => ctx.select(mailbox, modifiers).await,
+        CommandBody::Examine { mailbox, modifiers } => ctx.examine(mailbox, modifiers).await,
         CommandBody::Append {
             mailbox,
             flags,
@@ -422,11 +422,9 @@ impl<'a> AuthenticatedContext<'a> {
     async fn select(
         self,
         mailbox: &MailboxCodec<'a>,
-        parameters: &Option<NonEmptyVec<Atom<'a>>>,
+        modifiers: &[SelectExamineModifier],
     ) -> Result<(Response<'static>, flow::Transition)> {
-        parameters.as_ref().map(|plist|
-            self.client_capabilities.select_enable(plist.as_ref())
-        );
+        self.client_capabilities.select_enable(modifiers);
 
         let name: &str = MailboxName(mailbox).try_into()?;
 
@@ -462,11 +460,9 @@ impl<'a> AuthenticatedContext<'a> {
     async fn examine(
         self,
         mailbox: &MailboxCodec<'a>,
-        parameters: &Option<NonEmptyVec<Atom<'a>>>,
+        modifiers: &[SelectExamineModifier],
     ) -> Result<(Response<'static>, flow::Transition)> {
-        parameters.as_ref().map(|plist|
-            self.client_capabilities.select_enable(plist.as_ref())
-        );
+        self.client_capabilities.select_enable(modifiers);
 
         let name: &str = MailboxName(mailbox).try_into()?;
 
diff --git a/src/imap/command/examined.rs b/src/imap/command/examined.rs
index bb05250..a8077e3 100644
--- a/src/imap/command/examined.rs
+++ b/src/imap/command/examined.rs
@@ -1,7 +1,7 @@
 use std::sync::Arc;
 
 use anyhow::Result;
-use imap_codec::imap_types::command::{Command, CommandBody};
+use imap_codec::imap_types::command::{Command, CommandBody, FetchModifier};
 use imap_codec::imap_types::core::Charset;
 use imap_codec::imap_types::fetch::MacroOrMessageDataItemNames;
 use imap_codec::imap_types::search::SearchKey;
@@ -37,8 +37,9 @@ pub async fn dispatch(ctx: ExaminedContext<'_>) -> Result<(Response<'static>, fl
         CommandBody::Fetch {
             sequence_set,
             macro_or_item_names,
+            modifiers,
             uid,
-        } => ctx.fetch(sequence_set, macro_or_item_names, uid).await,
+        } => ctx.fetch(sequence_set, macro_or_item_names, modifiers, uid).await,
         CommandBody::Search {
             charset,
             criteria,
@@ -88,6 +89,7 @@ impl<'a> ExaminedContext<'a> {
         self,
         sequence_set: &SequenceSet,
         attributes: &'a MacroOrMessageDataItemNames<'static>,
+        modifiers: &[FetchModifier],
         uid: &bool,
     ) -> Result<(Response<'static>, flow::Transition)> {
         match self.mailbox.fetch(sequence_set, attributes, uid).await {
diff --git a/src/imap/command/selected.rs b/src/imap/command/selected.rs
index de59ed3..862d4aa 100644
--- a/src/imap/command/selected.rs
+++ b/src/imap/command/selected.rs
@@ -1,8 +1,8 @@
 use std::sync::Arc;
 
 use anyhow::Result;
-use imap_codec::imap_types::command::{Command, CommandBody, StoreModifier};
-use imap_codec::imap_types::core::{Charset, Atom};
+use imap_codec::imap_types::command::{Command, CommandBody, FetchModifier, StoreModifier};
+use imap_codec::imap_types::core::Charset;
 use imap_codec::imap_types::fetch::MacroOrMessageDataItemNames;
 use imap_codec::imap_types::flag::{Flag, StoreResponse, StoreType};
 use imap_codec::imap_types::mailbox::Mailbox as MailboxCodec;
@@ -43,8 +43,9 @@ pub async fn dispatch<'a>(
         CommandBody::Fetch {
             sequence_set,
             macro_or_item_names,
+            modifiers,
             uid,
-        } => ctx.fetch(sequence_set, macro_or_item_names, uid).await,
+        } => ctx.fetch(sequence_set, macro_or_item_names, modifiers, uid).await,
         CommandBody::Search {
             charset,
             criteria,
@@ -114,6 +115,7 @@ impl<'a> SelectedContext<'a> {
         self,
         sequence_set: &SequenceSet,
         attributes: &'a MacroOrMessageDataItemNames<'static>,
+        modifiers: &[FetchModifier],
         uid: &bool,
     ) -> Result<(Response<'static>, flow::Transition)> {
         match self.mailbox.fetch(sequence_set, attributes, uid).await {
@@ -194,7 +196,7 @@ impl<'a> SelectedContext<'a> {
         kind: &StoreType,
         response: &StoreResponse,
         flags: &[Flag<'a>],
-        modifiers: &[(Atom<'a>, StoreModifier<'a>)],
+        modifiers: &[StoreModifier],
         uid: &bool,
     ) -> Result<(Response<'static>, flow::Transition)> {
         tracing::info!(modifiers=?modifiers);