Still using the OpenERP 5.0 version, I currently explore the odoo evolution. I tried the 7.x version and compare it to 8.0 development version.
I have a problem with messaging app in 8.0. Maybe a lack of understanding from myself, but I cannot find any piece of explanation over the web, the reason of my question here.
In the messaging app, on inbox panel the "Compose a new button" and the top-right mail icon next to the user top menu had been removed in latest 8.0 versions. So compare to the 7.x version, on the 8.0 we can just write a message to all of our followers and we cannot customize the recipient list.
The result is that I don't understand how to compose a simple Email and customize the recepient list by adding or removing users and other mail addresses from the Inbox panel and from the Compose message form view. It can be easily done in 7.0 or on OpenERP Saas version.
I just found any GitHub commits like this one https://github.com/odoo/odoo/commit/5209fbc7ed9fcad966ab064654a8a8697142be42, for the mail icon deletion, but not enough explanation of the reason.
I don't have enough of karma to insert images so I give you just behind the links of a screenshot from the OpenERP v7 documentation. Just understand that in the 8.0 version the compose a new message bottom and the top-right mail icon disappeared.
https://doc.odoo.com/book/12/ => the image link https://doc.odoo.com/doc_static/7.0/_images/messaging_menu.png
Thanks for your anwers!