diff --git a/addons/mail/static/src/core/web/suggested_recipient.js b/addons/mail/static/src/core/web/suggested_recipient.js
index f59d672394c..3ec12f5926b 100644
--- a/addons/mail/static/src/core/web/suggested_recipient.js
+++ b/addons/mail/static/src/core/web/suggested_recipient.js
@@ -39,6 +39,12 @@ export class SuggestedRecipient extends Component {
                     default_email: this.props.recipient.email,
                     default_name: this.props.recipient.name,
                     default_lang: this.props.recipient.lang,
+                    ...Object.fromEntries(
+                        Object.entries(this.props.recipient.defaultCreateValues).map(([k, v]) => [
+                            "default_" + k,
+                            v,
+                        ])
+                    ),
                     force_email: true,
                     ref: "compound_context",
                 },
diff --git a/addons/mail/static/src/core/web/thread_service_patch.js b/addons/mail/static/src/core/web/thread_service_patch.js
index d87018ab218..c8fe2245619 100644
--- a/addons/mail/static/src/core/web/thread_service_patch.js
+++ b/addons/mail/static/src/core/web/thread_service_patch.js
@@ -128,10 +128,10 @@ patch(ThreadService.prototype, {
     async insertSuggestedRecipients(thread, dataList) {
         const recipients = [];
         for (const data of dataList) {
-            const [partner_id, emailInfo, lang, reason, customerInfo] = data;
+            const [partner_id, emailInfo, lang, reason, defaultCreateValues] = data;
             let [name, email] = emailInfo ? parseEmail(emailInfo) : [];
-            if ((!name || name === email) && customerInfo?.name) {
-                name = customerInfo.name;
+            if ((!name || name === email) && defaultCreateValues?.name) {
+                name = defaultCreateValues.name;
             }
             recipients.push({
                 id: nextId++,
@@ -141,6 +141,7 @@ patch(ThreadService.prototype, {
                 reason,
                 persona: partner_id ? { type: "partner", id: partner_id } : false,
                 checked: true,
+                defaultCreateValues,
             });
         }
         thread.suggestedRecipients = recipients;
diff --git a/addons/mail/static/tests/composer/suggested_recipients_test.js b/addons/mail/static/tests/composer/suggested_recipients_test.js
index 1c3bc4cdb26..6620eec8607 100644
--- a/addons/mail/static/tests/composer/suggested_recipients_test.js
+++ b/addons/mail/static/tests/composer/suggested_recipients_test.js
@@ -4,7 +4,7 @@ import { startServer } from "@bus/../tests/helpers/mock_python_environment";
 
 import { start } from "@mail/../tests/helpers/test_utils";
 
-import { makeDeferred, patchWithCleanup } from "@web/../tests/helpers/utils";
+import { makeDeferred, nextTick, patchWithCleanup } from "@web/../tests/helpers/utils";
 import { click, contains, insertText } from "@web/../tests/utils";
 
 const views = {
@@ -16,6 +16,14 @@ const views = {
                 <field name="message_follower_ids"/>
             </div>
         </form>`,
+    "res.partner,false,form": `
+        <form string="Partner">
+            <sheet>
+                <field name="name"/>
+                <field name="email"/>
+                <field name="phone"/>
+            </sheet>
+        </form>`,
 };
 
 QUnit.module("suggested_recipients");
@@ -290,3 +298,43 @@ QUnit.test("suggested recipients should be added as follower when posting a mess
     await contains(".o-mail-Message");
     await contains(".o-mail-Followers-counter", { text: "1" });
 });
+
+QUnit.test(
+    "suggested partner unchecked/checked -> partner creation in wizard with defaults",
+    async (assert) => {
+        const pyEnv = await startServer();
+        const fakeId = pyEnv["res.fake"].create({
+            email_cc: "john@test.be",
+        });
+        let partner = pyEnv["res.partner"].search([["email", "=", "john@test.be"]]);
+        assert.strictEqual(partner.length, 0);
+        const { openFormView } = await start({
+            serverData: { views },
+            async mockRPC(route, args, performRPC) {
+                // Override mockRPC response to simulate retrieving default values
+                // for the suggested recipient through `_get_customer_information`
+                if (route === "/mail/thread/data") {
+                    const res = await performRPC(route, args);
+                    assert.strictEqual(res["suggestedRecipients"].length, 1);
+                    assert.deepEqual(res["suggestedRecipients"][0][1], "john@test.be");
+                    res["suggestedRecipients"][0].push({
+                        company_name: "Test Company",
+                    });
+                    return res;
+                }
+            },
+        });
+        openFormView("res.fake", fakeId);
+        await click("button", { text: "Send message" });
+        await click(".o-mail-SuggestedRecipient input");
+        await click(".o-mail-SuggestedRecipient input");
+        await nextTick();
+        await click(".o_dialog .o_form_button_save");
+        await nextTick();
+        partner = pyEnv["res.partner"].search([
+            ["email", "=", "john@test.be"],
+            ["company_name", "=", "Test Company"],
+        ]);
+        assert.strictEqual(partner.length, 1);
+    }
+);