enigmail 1.9.8 in Ubuntu 16.04

[Ralf Mardorf]

On Mon, 28 Aug 2017 10:57:46 +0100, Phil Dobbin wrote:
>My version of Enigmail on 16.04 is 1.9.8.1 which was released on
>08/07/17

Nonsense!

https://packages.ubuntu.com/xenial/enigmail
https://packages.ubuntu.com/xenial-updates/enigmail

Even artful is on 1.9.7.

https://packages.ubuntu.com/artful/enigmail

Obviously you are using a third party repository.