diff --git a/.changeset/selfish-fishes-move.md b/.changeset/selfish-fishes-move.md
new file mode 100644
index 000000000000..a227695cea89
--- /dev/null
+++ b/.changeset/selfish-fishes-move.md
@@ -0,0 +1,5 @@
+---
+"@rocket.chat/meteor": patch
+---
+
+fixes mail export form "To additional emails" field validation
diff --git a/apps/meteor/client/views/room/contextualBar/ExportMessages/MailExportForm.tsx b/apps/meteor/client/views/room/contextualBar/ExportMessages/MailExportForm.tsx
index c7a3276ac8e1..b6f0e4b88bf2 100644
--- a/apps/meteor/client/views/room/contextualBar/ExportMessages/MailExportForm.tsx
+++ b/apps/meteor/client/views/room/contextualBar/ExportMessages/MailExportForm.tsx
@@ -155,11 +155,8 @@ const MailExportForm = ({ formId, rid, onCancel, exportOptions }: MailExportForm
 									rules={{
 										validate: {
 											validateEmail: (additionalEmails) => {
-												if (additionalEmails === '') {
-													return undefined;
-												}
-
-												if (additionalEmails !== '' && validateEmail(additionalEmails)) {
+												const emails = additionalEmails?.split(',').map((email) => email.trim());
+												if (Array.isArray(emails) && emails.every((email) => validateEmail(email.trim()))) {
 													return undefined;
 												}