(Author of the spec here)
We will be adding sending to the JMAP spec, although support may be optional. The way it currently works at FastMail is a bit too specific to our architecture though, so we want to clean it up before adding it to the spec.
We will be adding sending to the JMAP spec, although support may be optional. The way it currently works at FastMail is a bit too specific to our architecture though, so we want to clean it up before adding it to the spec.