Mail that stays next to the work
The point of mail inside a workspace is not to replace your mail client. It is to stop the copy-pasting.
The Mail module connects your accounts so that messages sit beside the projects, tasks and files they concern, rather than in a separate application you alt-tab to forty times a day.
What it is actually for
Most of the value is not reading mail here. It is that a message can become a task without you retyping it, and an attachment can go to the right folder without a download-and-upload round trip.
So the honest test is not “do I like this as a mail client”. It is: how much of my day was moving information between mail and everything else? If the answer is a lot, this pays for itself in a week. If your mail is mostly newsletters and personal, keep using what you use.
Turn the thread into the task, not a copy of it
When a client mail contains a request, make the task from the mail rather than writing a fresh task that says “see email”. The second version rots: six weeks later the task says “see email” and nobody can find which email.
Give the task a title that says what to do — “send revised quote”, not “Re: Re: Fwd: proposal”. The subject line was written by the sender for their purpose, not yours.
Attachments have a habit of multiplying
The same file arrives three times: original, “final”, and “final v2 with comments”. If you save all three into the project folder, the next person opens the wrong one.
Save the one you are going to work from and let the others stay in the thread. The mail is the archive; the folder is the working copy. Mixing those two is how a project folder ends up with eleven versions of a logo.
Shared inboxes need an owner per message
A mailbox several people can read is a mailbox where everyone assumes someone else replied. This is not a software problem and no feature fixes it.
Pick one convention and hold it: whoever opens a message either answers it or assigns it, in that moment. “I'll come back to it” is what produces a four-day-old customer question that three people saw.
Questions people actually ask
Should Mail replace my usual mail client?
Only if a lot of your day is moving information between mail and your work. The value is in turning messages into tasks and attachments into files without copy-pasting — not in reading mail differently.
How should a mail become a task?
Create the task from the message itself, not a fresh task saying “see email”. And give it a title that says what to do, since the subject line was written by the sender for their purpose.
How do we stop a shared inbox from being ignored?
One rule: whoever opens a message either answers it or assigns it in that moment. Every shared inbox failure comes from everyone assuming someone else replied.