Sketch tip: How to set an “Outside” border for text
by Christian Krammer from sketchtips.info
One limitation of text in Sketch is that the position of borders can only be set to “Center”, as opposed to shapes, where you also have “Inside” and “Outside” available. This makes the option to set borders on text basically useless, because most of the time you need one on the “Outside”.
However, like so often in Sketch, there’s a workaround. Just duplicate the text layer, move it to the back, give it the desired border color and border thickness and set the fill to the same color. Now it’s as easy as pie to control the border of your text. Just make sure to adjust your “border layer” whenever you change or resize your text layer. Not ideal, but the only way to get this type of text border in Sketch.