MC256025 – Microsoft is moving the “send” button to a more convenient and easy-to-reach position when using your thumbs to type in Outlook for iOS. This will also match the experience in quick reply.
This message is associated with Microsoft 365 Roadmap ID 83145.
When this will happen
Roll out will begin in late May and be completed by late June.
How this will affect your organization
When this update rolls out, the button to send an email message in full screen compose mode will move from the top right of the screen to the bottom right in the toolbar.
What you need to do to prepare
There is no action you need to take to prepare for this change, but you might consider updating your user documentation and alerting your help desk.