I've been using Office Otter. It allows me to create a task just by forwarding an email, sending in a text, or clicking on a Slack message. I also like it's reminders and reporting. Granted, I work at Office Otter, but we have been working specifically with Administrative Professionals to make a productivity tool specifically for them. We believe you shouldn't have to use a product/project management software to be productive. Office Otter is built around communication tools to help keep extra effort at a minimum while still bringing and tracking all your tasks in one place.