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I don't know, but Fastmail is using JMAP: https://www.fastmail.com/help/guides/interfaceupdate-2018.html https://www.fastmail.com/help/guides/interfaceupdate-20

by mkl 7y ago

I don't know, but Fastmail is using JMAP: https://www.fastmail.com/help/guides/interfaceupdate-2018.html https://www.fastmail.com/help/guides/interfaceupdate-2018.ht... This supports labels: https://jmap.io/spec-mail.html https://jmap.io/spec-mail.html