Update to v5

app/Mailers/FormConfirmation.ts

@@ -0,0 +1,22 @@
+import mjml from 'mjml'
+import { BaseMailer, MessageContract } from '@ioc:Adonis/Addons/Mail'
+import View from "@ioc:Adonis/Core/View";
+
+export default class FormConfirmation extends BaseMailer {
+
+  constructor (private name: string, private email: string) {
+    super()
+  }
+
+  public html = mjml(View.render('emails/confirmation_form', {
+    name: this.name
+  })).html
+
+  public prepare(message: MessageContract) {
+    message
+      .from('contact@arthurdanjou.fr')
+      .to(this.email)
+      .subject('Confirmation Form')
+      .html(this.html)
+  }
+}