@rykov
We are using paperboy to send out contract notes (user specific), with a common campaign template. Could also be used to send out invoices, sales report and so on.

I ve accidentally pushed other commits to this PR too. They are

1. 45acb93 will allow custom layout paths.
2. 45c0249 allows us to send custom subjects also.

@joeirimpan I haven't had a chance to think about how attachments will work, but I liked your idea of allowing custom subjects. So I've just pushed support for subject templating.

Now you can do something like:

subject: Your new username is {{ .Recipient.Params.username }}

or in your case, you customize the whole subject:

subject: {{ .Recipient.Params.subject }}

Thank you for the idea, and I'll follow up on the other changes soon.

Thanks for looking into this. But we created our own fully-fledged mailing list manager. Please do take a look :)

@joeirimpan Nice! That's impressive. Happy to have more self-hosted alternatives to all the paid services. Maybe there's a possibility for compatibility/collaboration in the future.