I'm very active this weekend. Sorry about it!

Mihaela:

Gitlab is great for collaborate with code but it's not for graphic design process.

I have find and interesting app that can help us, it has an unlimited free plan. 

We can share mockups and leave feedback. It has 3 differents role types and you can see files like a guest. Take a look to an example board that I create for testing. 

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Have you disscused the possibility of migrate these comunications to a most friendly environment like Slack or RocketChat?

So we can use @...3658... or divide conversations by topic or silence notifications, etc.