diff --git a/app/api/serializer.py b/app/api/serializer.py
index 4017fd1e..a92d6339 100644
--- a/app/api/serializer.py
+++ b/app/api/serializer.py
@@ -222,6 +222,22 @@ def get_alias_infos_with_pagination_v3(
         .subquery()
     )
 
+    mailboxes_sub = (
+        db.session.query(
+            Alias.id,
+            func.count(AliasMailbox.id).label("nb_matched_mailboxes"),
+        )
+        .join(AliasMailbox, Alias.id == AliasMailbox.alias_id, isouter=True)
+        .join(Mailbox, AliasMailbox.mailbox_id == Mailbox.id, isouter=True)
+    )
+
+    if query:
+        mailboxes_sub = mailboxes_sub.filter(
+            or_(Mailbox.email == None, Mailbox.email.ilike(f"%{query}%"))
+        )
+
+    mailboxes_sub = mailboxes_sub.group_by(Alias.id).subquery()
+
     latest_activity = case(
         [
             (Alias.created_at > EmailLog.created_at, Alias.created_at),
@@ -232,16 +248,13 @@ def get_alias_infos_with_pagination_v3(
 
     q = (
         db.session.query(
-            Alias,
-            Contact,
-            EmailLog,
-            sub.c.nb_reply,
-            sub.c.nb_blocked,
-            sub.c.nb_forward,
+            Alias, Contact, EmailLog, sub.c.nb_reply, sub.c.nb_blocked, sub.c.nb_forward
         )
         .join(Contact, Alias.id == Contact.alias_id, isouter=True)
         .join(EmailLog, Contact.id == EmailLog.contact_id, isouter=True)
+        .join(Mailbox, Alias.mailbox_id == Mailbox.id, isouter=True)
         .filter(Alias.id == sub.c.id)
+        .filter(Alias.id == mailboxes_sub.c.id)
         .filter(
             or_(
                 EmailLog.created_at == sub.c.max_created_at,
@@ -256,6 +269,7 @@ def get_alias_infos_with_pagination_v3(
                 Alias.email.ilike(f"%{query}%"),
                 Alias.note.ilike(f"%{query}%"),
                 Alias.name.ilike(f"%{query}%"),
+                mailboxes_sub.c.nb_matched_mailboxes > 0,
                 Mailbox.email.ilike(f"%{query}%"),
             )
         )
diff --git a/tests/api/test_serializer.py b/tests/api/test_serializer.py
new file mode 100644
index 00000000..a3632e76
--- /dev/null
+++ b/tests/api/test_serializer.py
@@ -0,0 +1,139 @@
+from flask import url_for
+
+from app.api.serializer import get_alias_infos_with_pagination_v3
+from app.config import PAGE_LIMIT
+from app.extensions import db
+from app.models import User, ApiKey, Alias, Contact, EmailLog, Mailbox
+
+
+def test_get_alias_infos_with_pagination_v3(flask_client):
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+
+    # user has 1 alias that's automatically created when the account is created
+    alias_infos = get_alias_infos_with_pagination_v3(user)
+    assert len(alias_infos) == 1
+    alias_info = alias_infos[0]
+
+    alias = Alias.query.first()
+    assert alias_info.alias == alias
+    assert alias_info.mailbox == user.default_mailbox
+    assert alias_info.mailboxes == [user.default_mailbox]
+    assert alias_info.nb_forward == 0
+    assert alias_info.nb_blocked == 0
+    assert alias_info.nb_reply == 0
+    assert alias_info.latest_email_log is None
+    assert alias_info.latest_contact is None
+
+
+def test_get_alias_infos_with_pagination_v3_query_alias_email(flask_client):
+    """test the query on the alias email"""
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+
+    alias = Alias.query.first()
+
+    alias_infos = get_alias_infos_with_pagination_v3(user, query=alias.email)
+    assert len(alias_infos) == 1
+
+    alias_infos = get_alias_infos_with_pagination_v3(user, query="no match")
+    assert len(alias_infos) == 0
+
+
+def test_get_alias_infos_with_pagination_v3_query_alias_mailbox(flask_client):
+    """test the query on the alias mailbox email"""
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+    alias = Alias.query.first()
+    alias_infos = get_alias_infos_with_pagination_v3(user, query=alias.mailbox.email)
+    assert len(alias_infos) == 1
+
+
+def test_get_alias_infos_with_pagination_v3_query_alias_mailboxes(flask_client):
+    """test the query on the alias additional mailboxes"""
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+    alias = Alias.query.first()
+    mb = Mailbox.create(user_id=user.id, email="mb@gmail.com")
+    alias._mailboxes.append(mb)
+    db.session.commit()
+
+    alias_infos = get_alias_infos_with_pagination_v3(user, query=mb.email)
+    assert len(alias_infos) == 1
+
+
+def test_get_alias_infos_with_pagination_v3_query_alias_note(flask_client):
+    """test the query on the alias note"""
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+
+    alias = Alias.query.first()
+    alias.note = "test note"
+    db.session.commit()
+
+    alias_infos = get_alias_infos_with_pagination_v3(user, query="test note")
+    assert len(alias_infos) == 1
+
+
+def test_get_alias_infos_with_pagination_v3_query_alias_name(flask_client):
+    """test the query on the alias name"""
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+
+    alias = Alias.query.first()
+    alias.name = "Test Name"
+    db.session.commit()
+
+    alias_infos = get_alias_infos_with_pagination_v3(user, query="test name")
+    assert len(alias_infos) == 1
+
+
+def test_get_alias_infos_with_pagination_v3_no_duplicate(flask_client):
+    """When an alias belongs to multiple mailboxes, make sure get_alias_infos_with_pagination_v3
+    returns no duplicates
+    """
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+        commit=True,
+    )
+
+    alias = Alias.query.first()
+    mb = Mailbox.create(user_id=user.id, email="mb@gmail.com")
+    alias._mailboxes.append(mb)
+    db.session.commit()
+
+    alias_infos = get_alias_infos_with_pagination_v3(user)
+    assert len(alias_infos) == 1