diff --git a/packages/api/src/defaultStyleOptions.ts b/packages/api/src/defaultStyleOptions.ts
index ec3147fcbd..f316c910fd 100644
--- a/packages/api/src/defaultStyleOptions.ts
+++ b/packages/api/src/defaultStyleOptions.ts
@@ -137,10 +137,10 @@ const DEFAULT_OPTIONS: Required<StyleOptions> = {
   sendBoxMaxHeight: 200,
   sendBoxTextColor: 'Black',
   // TODO: We should deprecate this because there isn't an easy way to make the width of the send box narrower than the transcript
-  sendBoxBorderBottom: undefined,
-  sendBoxBorderLeft: undefined,
-  sendBoxBorderRight: undefined,
-  sendBoxBorderTop: 'solid 1px #E6E6E6',
+  sendBoxBorderBottom: 'solid 2px #E6E6E6',
+  sendBoxBorderLeft: 'solid 2px #E6E6E6',
+  sendBoxBorderRight: 'solid 2px #E6E6E6',
+  sendBoxBorderTop: 'solid 2px #E6E6E6',
   sendBoxPlaceholderColor: undefined,
   sendBoxTextWrap: false,
   sendBoxButtonAlignment: 'stretch',