Preview not working?

[mgs96]

Describe the bug
Setting up
preview: { open: true, }
On the mailer module configuration doesn't open the browser showing the template.

Expected behavior
Mail is displayed on the browser.

Screenshots

This is how I'm calling the sendMail function:

Desktop:

• OS: macOS 14.2.1
• Browser: safari
• Version: 17.2.1

Additional context
It was my understanding that if the preview: true was set up, the mail would not be sent, is this the case?

[buti1021]

Running into the same issue on Windows

[buti1021]

		MailerModule.forRoot({
			transport: {jsonTransport: true},
			preview: true,
		}),

this is my config, according to the code here the issues is, that templateAdapter is undefined (which is suiting my config, but in my understanding should not change that preview works. I guess the preview part should be moved out of this condition or be included in an else block

mailer/lib/mailer.service.ts

Line 29 in 64d0597

if (templateAdapter) {

[buti1021]

@mgs96
I dont think this has been resolved?
Could you leave this open please?