YES! The Earth Class Mail iOS mobile app supports shipping in just a few clicks.
From your MailRoom Inbox hit Select (top right) and select all items you'd like added to a shipment. Hit More (bottom right) and then select Add to Shipping Cart. Selected items will now be added to your Shipping Cart, accessible via the green bar now showing along the bottom of your screen. Additional items can be added to the cart; apply any filters to help you find and select the other items you'd like to ship. Once selected, again you can hit More and Add to Shipping Cart.
You can also add individual items to ship; while viewing a specific item, hit More and Add to Shipping Cart.
The green bar will continue to count items added to the cart. To complete your shipment, hit the green bar to review your Shipping Cart.
To remove an item from the shipment, swipe right to left and hit the trash can icon.
When ready, select Continue to Shipping Details and follow the shipping prompts!
Here's a quick video to show you how it's done:

Do you need to cancel a shipment request before it's processed? Here's how to do it!
If you don't have the mobile app yet, we can help you get started!