It's also useful to switch between multiple accounts on the same site.
I'm a little fed up with that addon though, mainly because it's impossible to set up a default container for a specific site (main account) while still being able to open that site in another container (alt account) when necessary.
I read something about how Firefox containerizes each tab automatically without any addon so that the Muli-Account Containers are redundant? Is there any truth to this?
How do you handle multiple accounts on websites?
Basically looking to get rid of the Multi-Account Container addon.
I use it for situations where I need to either visually differentiate certain tabs (due to the color) or split their cookies (example: My work has multiple systems that share similar information but in different contexts, this way they cannot have their informations mesh which makes testing easier).
Using containers manually works fine for my purposes. Like when you right-click the newtab-button or click-and-hold it, it will show a popup where you can select a container for the new tab. And there is a section in Options to create new containers.
I kinda think the manual controls don't show up normally, at least they didn't always and you had to enable them from about:config, but maybe that has changed since.