I think it's a good discussion toe establish the terminology and have the same view of this.
I hope it gets into the docs as a term deffinition or something similar. +1 for Extension Developer. Regarding the Testing server, there is a niche for a product in this area. See https://github.com/mailhog/MailHog and https://ethereal.email/ . I would love to see something like that built on top of James with JMAP. I think it provides a very good test-bed and has values to a lot of developer teams working / testing email delivery. Regards, -- Eugen Stan +40720 898 747 / netdava.com
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