What has happened to custom tasks to send emails

[GriffAdmin]

I have just tried to log in to change one of my Tasks (called by a BOT) that used a custom template to send an email with an attachment and now it's different. Email type has been changed to Embedded app view aind my usual customisations have disappeared. Many of our users don't use GMail and so Embedded apps are of little value at this stage. Do I have to have the embedded GMail setting or can I have the original as my default.