For what it is worth, this is how I use Todoist integration with my mail clients. I made categories according to GTD and assign emails to the right category. I

For what it is worth, this is how I use Todoist integration with my mail clients. I made categories according to GTD and assign emails to the right category. I tag them with my tags like "read/review", "reply", and other tags useful to me. Next to that I use Todoist for regular task management. Works quite well for me. Made all these additions to email clients like "snooze" redundant. P.s. key is to have the task management app with proper functionality which is available on your phones email clients as well as you read quite a lot of them there. This is why I chose Todoist as it integrates with my Newton email app which I use for my work mail.