Guest access is live in Planner! To learn more, visit: https://techcommunity.microsoft.com/t5/Planner-Blog/Bring-your-plans-to-life-with-guests-in-Planner/ba-p/190704
We have two more parts of this feature to deliver:
1) Comments enabled for guests to see and use
2) The ability to invite a guest from within Planner
Thank you again for your patience and feedback on this!
The Planner Team
An error occurred while saving the commentDarlene commented
Please allow for guests to use planner. It would make my life so much easier as a small business owner