diff --git a/scripts/mills_messages.mjs b/scripts/mills_messages.mjs
index 2383e79..578841a 100644
--- a/scripts/mills_messages.mjs
+++ b/scripts/mills_messages.mjs
@@ -71,16 +71,24 @@ async function create_history_journal(user) {
  * This allows us to populate the form with previous inputs and go back and forth
  * within the chain, to be able to fix mistakes or send fewer messages.
  *
+ * We also use this to pre-fill the first form with data if any is passed.
+ *
  * NOTE: The recipients are the same for all the messages of a chain, to simplify
  * the processing later as we only have to build one array of messages, shared among
  * the recipients.
+ *
+ * @param {MessageFormResponse|null} initial_form_data Data to pre-fill the first form with.
  * @returns {Promise<void>} The Promise for the processing of the messages.
  */
-async function send_message_dialog() {
+async function send_message_dialog(initial_form_data = null) {
     /** @type{MessageFormResponse[]} */
     let messages = []
     let current_message = 0
 
+    if (initial_form_data !== null) {
+        messages.push(initial_form_data);
+    }
+
     let chain = false;
     do {
         if (chain) {