1. As others have said, don't treat the tools provided by your clients as "organizational tools", treat the communication via those tools as a part of the deliverable they are paying for. If they have a convoluted system, ensure you are paid accordingly if it will take you a long time to use it the way they are asking.
2. Use Browser Profiles, and have a differently named user for each client, with different default tabs and authentication states. When you need to work on "Client A", simply click your name in the top-right of Chrome, select "Client A", and a new window will open with all of your important tabs open.
3. Documentation isn't just for code! For each client, keep a dossier of your contacts at the organization, their preferred method of contact, etc. This document can also act as "usage notes" for their internal or provided systems. It's helpful to have a document like this be the default opened tab when hopping into the Browser Profile for a specific client.
2. Use Browser Profiles, and have a differently named user for each client, with different default tabs and authentication states. When you need to work on "Client A", simply click your name in the top-right of Chrome, select "Client A", and a new window will open with all of your important tabs open.
3. Documentation isn't just for code! For each client, keep a dossier of your contacts at the organization, their preferred method of contact, etc. This document can also act as "usage notes" for their internal or provided systems. It's helpful to have a document like this be the default opened tab when hopping into the Browser Profile for a specific client.