You can feather text boxes, too. Click on your text layer, then Ctrl+Click the thumbnail to select the text outline. Add a feather (Select > Modify > Feather at 5 px).
Now fill it with a color or gradient. The letters will have a soft, glowing halo. Perfect for baby shower announcements or angsty poetry. No judgment here.
How to Feather Edges in Photoshop: A Complete Guide