Good idea in principle, but will only work with my email account for a week or two, then instead of opening container it throws me back to the email log-in screen. If I disable or remove this add-on, all is well.

Multi-Account Containers is a very good extension, but it could be excellent. For exemple, creating a private navigation tab/container could be great !

good!

Instead of multiple Firefox instances for different related sessions (home, work, shop, ...) you can have all sessions in one , nicely separated in tabs by the color of your choosing.

Ideal per dificultar l'extracció d'informació entre comptes i pestanyes. Perque no puguin saber per quines xarxes socials et mous, o a quines botigues compres. Perque tingueu per segur, que l'objectiu últim d'aquesta recopilació de dades, majoritariament no és per afavorir-vos, si no per cercar noves formes de mantenir-vos conectats

Instead of multiple Firefox instances (by using --profileManager switch) for different related sessions (home, work, shop, ...) you can have all sessions in one instance/window, nicely separated in tabs by the color of your choosing. Been using it for years without any hassle and/or glitches or crashes. IMHO, it should be built directly into a Firefox. Excellent!

Excellent! No more different Firefox profiles, just containers for work and personal stuff. Possibility to have a few private profiles. Easy moving tabs between containers. I wish now every extension could have possibility to have settings per different container. Great to use with Sidebery add-on.

Its a life Saving extension and the only reason why I moved back to firefox.
two things are missing which i would like to add to this.

1st there should be an option to open a url in multiple container simultaneously.
2nd the sorting or change in order of container does not get applied to context menu from where i choose reopen this tab in other container, the custom order does not shows up there