Gmail is great, don't get me wrong, but it has one fatal flaw when it comes to providing notifications from Wrike--and I believe there is a fix on the Wrike side of things that could solve it: remove the brackets "[...]" that enclose the project/folder name in the subject line and replace them with something else that can differentiate the project/folder name from the task name.
We've deployed Wrike across our company and run many similar projects/campaigns for various clients through it. Similar projects means similar tasks (identical names, in fact) for good reason--we're trying to accurately report status, by task, across all of the projects.
As all of our communication and collaboration is done through Wrike we rely heavily on the email notifications. Herein lies the problem for the PMs and team members using gmail: because the tasks are the same AND gmail does not recognize text within brackets, "[...]", (per this, it ignores that text https://productforums.google.com/forum/#!topic/gmail/fmltUIWIjtw) the email updates from different projects end up being grouped together.
For example, an email update for the task with the subject line, "[Project A] Campaign Kick Off Meeting," would get grouped together by gmail with an email with the subject line, "[Project B] Campaign Kick Off Meeting," because it doesn't recognize the text within the brackets. If the subject line read, "Project A | Campaign Kick Off Meeting" or "Project B - Campaign Kick Off Meeting" gmail would not group them together and all communication would be sound.
If Wrike was able to use something other than the brackets to enclose the project or parent folder Gmail would no longer mis-group the emails.