diff --git a/src/Bundle.js b/src/Bundle.js
index 9c6b44d..f05c60a 100644
--- a/src/Bundle.js
+++ b/src/Bundle.js
@@ -387,7 +387,16 @@ export default class Bundle {
 			.filter( Boolean )
 			.join( '\n\n' );
 
-		if ( intro ) intro += '\n';
+		if ( intro ) intro += '\n\n';
+
+		let outro = [ options.outro ]
+			.concat(
+				this.plugins.map( plugin => plugin.outro && plugin.outro() )
+			)
+			.filter( Boolean )
+			.join( '\n\n' );
+
+		if ( outro ) outro = `\n\n${outro}`;
 
 		const indentString = getIndentString( magicString, options );
 
@@ -396,7 +405,7 @@ export default class Bundle {
 
 		timeStart( 'render format' );
 
-		magicString = finalise( this, magicString.trim(), { exportMode, indentString, intro }, options );
+		magicString = finalise( this, magicString.trim(), { exportMode, indentString, intro, outro }, options );
 
 		timeEnd( 'render format' );
 
diff --git a/src/finalisers/amd.js b/src/finalisers/amd.js
index 64adffd..70b404d 100644
--- a/src/finalisers/amd.js
+++ b/src/finalisers/amd.js
@@ -3,7 +3,7 @@ import getInteropBlock from './shared/getInteropBlock.js';
 import getExportBlock from './shared/getExportBlock.js';
 import esModuleExport from './shared/esModuleExport.js';
 
-export default function amd ( bundle, magicString, { exportMode, indentString, intro }, options ) {
+export default function amd ( bundle, magicString, { exportMode, indentString, intro, outro }, options ) {
 	const deps = bundle.externalModules.map( quotePath );
 	const args = bundle.externalModules.map( getName );
 
@@ -28,7 +28,7 @@ export default function amd ( bundle, magicString, { exportMode, indentString, i
 	const exportBlock = getExportBlock( bundle.entryModule, exportMode );
 	if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
 	if ( exportMode === 'named' && options.legacy !== true ) magicString.append( `\n\n${esModuleExport}` );
-	if ( options.outro ) magicString.append( `\n${options.outro}` );
+	if ( outro ) magicString.append( outro );
 
 	return magicString
 		.indent( indentString )
diff --git a/src/finalisers/cjs.js b/src/finalisers/cjs.js
index e89ef32..17f846f 100644
--- a/src/finalisers/cjs.js
+++ b/src/finalisers/cjs.js
@@ -1,7 +1,7 @@
 import getExportBlock from './shared/getExportBlock.js';
 import esModuleExport from './shared/esModuleExport.js';
 
-export default function cjs ( bundle, magicString, { exportMode, intro }, options ) {
+export default function cjs ( bundle, magicString, { exportMode, intro, outro }, options ) {
 	intro = ( options.useStrict === false ? intro : `'use strict';\n\n${intro}` ) +
 	        ( exportMode === 'named' && options.legacy !== true ? `${esModuleExport}\n\n` : '' );
 
@@ -45,7 +45,7 @@ export default function cjs ( bundle, magicString, { exportMode, intro }, option
 
 	const exportBlock = getExportBlock( bundle.entryModule, exportMode, 'module.exports =' );
 	if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
-	if ( options.outro ) magicString.append( `\n${options.outro}` );
+	if ( outro ) magicString.append( outro );
 
 	return magicString;
 }
diff --git a/src/finalisers/es.js b/src/finalisers/es.js
index 8251fe3..fb95375 100644
--- a/src/finalisers/es.js
+++ b/src/finalisers/es.js
@@ -4,7 +4,7 @@ function notDefault ( name ) {
 	return name !== 'default';
 }
 
-export default function es ( bundle, magicString, { intro }, options ) {
+export default function es ( bundle, magicString, { intro, outro }, options ) {
 	const importBlock = bundle.externalModules
 		.map( module => {
 			const specifiers = [];
@@ -71,7 +71,7 @@ export default function es ( bundle, magicString, { intro }, options ) {
 	}
 
 	if ( exportBlock ) magicString.append( '\n\n' + exportBlock.trim() );
-	if ( options.outro ) magicString.append( `\n${options.outro}` );
+	if ( outro ) magicString.append( outro );
 
 	return magicString.trim();
 }
diff --git a/src/finalisers/iife.js b/src/finalisers/iife.js
index 01d1325..60105c1 100644
--- a/src/finalisers/iife.js
+++ b/src/finalisers/iife.js
@@ -23,7 +23,7 @@ function setupNamespace ( keypath ) {
 		.join( '\n' ) + '\n';
 }
 
-export default function iife ( bundle, magicString, { exportMode, indentString, intro }, options ) {
+export default function iife ( bundle, magicString, { exportMode, indentString, intro, outro }, options ) {
 	const globalNameMaker = getGlobalNameMaker( options.globals || blank(), bundle.onwarn );
 
 	const name = options.moduleName;
@@ -63,7 +63,7 @@ export default function iife ( bundle, magicString, { exportMode, indentString,
 
 	const exportBlock = getExportBlock( bundle.entryModule, exportMode );
 	if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
-	if ( options.outro ) magicString.append( `\n${options.outro}` );
+	if ( outro ) magicString.append( outro );
 
 	return magicString
 		.indent( indentString )
diff --git a/src/finalisers/umd.js b/src/finalisers/umd.js
index dd8b9c6..279226d 100644
--- a/src/finalisers/umd.js
+++ b/src/finalisers/umd.js
@@ -25,7 +25,7 @@ function setupNamespace ( name ) {
 
 const wrapperOutro = '\n\n})));';
 
-export default function umd ( bundle, magicString, { exportMode, indentString, intro }, options ) {
+export default function umd ( bundle, magicString, { exportMode, indentString, intro, outro }, options ) {
 	if ( exportMode !== 'none' && !options.moduleName ) {
 		throw new Error( 'You must supply options.moduleName for UMD bundles' );
 	}
@@ -81,7 +81,7 @@ export default function umd ( bundle, magicString, { exportMode, indentString, i
 	const exportBlock = getExportBlock( bundle.entryModule, exportMode );
 	if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
 	if ( exportMode === 'named' && options.legacy !== true ) magicString.append( `\n\n${esModuleExport}` );
-	if ( options.outro ) magicString.append( `\n${options.outro}` );
+	if ( outro ) magicString.append( outro );
 
 	return magicString
 		.trim()
diff --git a/test/cli/banner-intro-outro-footer/_expected.js b/test/cli/banner-intro-outro-footer/_expected.js
index 521af55..8493276 100644
--- a/test/cli/banner-intro-outro-footer/_expected.js
+++ b/test/cli/banner-intro-outro-footer/_expected.js
@@ -3,7 +3,9 @@
 	'use strict';
 
 	// intro
+
 	console.log( 42 );
+
 	// outro
 
 }());
diff --git a/test/form/intro-and-outro/_config.js b/test/form/intro-and-outro/_config.js
index 410d586..232b008 100644
--- a/test/form/intro-and-outro/_config.js
+++ b/test/form/intro-and-outro/_config.js
@@ -4,6 +4,25 @@ module.exports = {
 		intro: '/* this is an intro */',
 		outro: '/* this is an outro */',
 		moduleName: 'foo',
-		external: [ 'external' ]
+		external: [ 'external' ],
+		plugins: [
+			{
+				intro () {
+					return '// intro 1'
+				},
+				outro () {
+					return '// outro 1'
+				}
+			},
+
+			{
+				intro () {
+					return '// intro 2'
+				},
+				outro () {
+					return '// outro 2'
+				}
+			}
+		]
 	}
 };
diff --git a/test/form/intro-and-outro/_expected/amd.js b/test/form/intro-and-outro/_expected/amd.js
index ca940e4..74ad78d 100644
--- a/test/form/intro-and-outro/_expected/amd.js
+++ b/test/form/intro-and-outro/_expected/amd.js
@@ -1,6 +1,11 @@
 define(['external'], function (a) { 'use strict';
 
 	/* this is an intro */
+
+	// intro 1
+
+	// intro 2
+
 	var a__default = 'default' in a ? a['default'] : a;
 
 	console.log( a__default );
@@ -9,6 +14,11 @@ define(['external'], function (a) { 'use strict';
 	var main = 42;
 
 	return main;
+
 	/* this is an outro */
 
+	// outro 1
+
+	// outro 2
+
 });
diff --git a/test/form/intro-and-outro/_expected/cjs.js b/test/form/intro-and-outro/_expected/cjs.js
index 6c68e67..ba3c331 100644
--- a/test/form/intro-and-outro/_expected/cjs.js
+++ b/test/form/intro-and-outro/_expected/cjs.js
@@ -1,6 +1,11 @@
 'use strict';
 
 /* this is an intro */
+
+// intro 1
+
+// intro 2
+
 function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
 
 var a = require('external');
@@ -12,4 +17,9 @@ console.log( a.b );
 var main = 42;
 
 module.exports = main;
+
 /* this is an outro */
+
+// outro 1
+
+// outro 2
diff --git a/test/form/intro-and-outro/_expected/es.js b/test/form/intro-and-outro/_expected/es.js
index 2da2a74..7a9a073 100644
--- a/test/form/intro-and-outro/_expected/es.js
+++ b/test/form/intro-and-outro/_expected/es.js
@@ -1,4 +1,9 @@
 /* this is an intro */
+
+// intro 1
+
+// intro 2
+
 import a, { b } from 'external';
 
 console.log( a );
@@ -7,4 +12,9 @@ console.log( b );
 var main = 42;
 
 export default main;
+
 /* this is an outro */
+
+// outro 1
+
+// outro 2
diff --git a/test/form/intro-and-outro/_expected/iife.js b/test/form/intro-and-outro/_expected/iife.js
index 2c716d3..4e04b79 100644
--- a/test/form/intro-and-outro/_expected/iife.js
+++ b/test/form/intro-and-outro/_expected/iife.js
@@ -2,6 +2,11 @@ var foo = (function (a) {
 	'use strict';
 
 	/* this is an intro */
+
+	// intro 1
+
+	// intro 2
+
 	var a__default = 'default' in a ? a['default'] : a;
 
 	console.log( a__default );
@@ -10,6 +15,11 @@ var foo = (function (a) {
 	var main = 42;
 
 	return main;
+
 	/* this is an outro */
 
+	// outro 1
+
+	// outro 2
+
 }(a));
diff --git a/test/form/intro-and-outro/_expected/umd.js b/test/form/intro-and-outro/_expected/umd.js
index 232db4e..a1de1a0 100644
--- a/test/form/intro-and-outro/_expected/umd.js
+++ b/test/form/intro-and-outro/_expected/umd.js
@@ -5,6 +5,11 @@
 }(this, (function (a) { 'use strict';
 
 	/* this is an intro */
+
+	// intro 1
+
+	// intro 2
+
 	var a__default = 'default' in a ? a['default'] : a;
 
 	console.log( a__default );
@@ -13,6 +18,11 @@
 	var main = 42;
 
 	return main;
+
 	/* this is an outro */
 
+	// outro 1
+
+	// outro 2
+
 })));