diff --git a/src/plot_api/plot_config.js b/src/plot_api/plot_config.js
index 7971cd2ef8d..30c2a2b68c8 100644
--- a/src/plot_api/plot_config.js
+++ b/src/plot_api/plot_config.js
@@ -21,6 +21,10 @@ module.exports = {
     // no interactivity, for export or image generation
     staticPlot: false,
 
+    // base URL for the 'Edit in Chart Studio' (aka sendDataToCloud) mode bar button
+    // and the showLink/sendData on-graph link
+    plotlyServerURL: 'https://plot.ly',
+
     /*
      * we can edit titles, move annotations, etc - sets all pieces of `edits`
      * unless a separate `edits` config item overrides individual parts
diff --git a/src/plots/plots.js b/src/plots/plots.js
index 404e347ed6e..fb7db552e37 100644
--- a/src/plots/plots.js
+++ b/src/plots/plots.js
@@ -214,7 +214,7 @@ function positionPlayWithData(gd, container) {
 plots.sendDataToCloud = function(gd) {
     gd.emit('plotly_beforeexport');
 
-    var baseUrl = (window.PLOTLYENV && window.PLOTLYENV.BASE_URL) || 'https://plot.ly';
+    var baseUrl = (window.PLOTLYENV || {}).BASE_URL || gd._context.plotlyServerURL;
 
     var hiddenformDiv = d3.select(gd)
         .append('div')
diff --git a/test/jasmine/tests/config_test.js b/test/jasmine/tests/config_test.js
index 7b7f74ffbec..041aa96ae82 100644
--- a/test/jasmine/tests/config_test.js
+++ b/test/jasmine/tests/config_test.js
@@ -470,7 +470,63 @@ describe('config argument', function() {
             var editBox = document.getElementsByClassName('plugin-editable editable')[0];
             expect(editBox).toBeUndefined();
         });
+    });
+
+    describe('plotlyServerURL:', function() {
+        var gd;
+        var form;
+
+        beforeEach(function() {
+            gd = createGraphDiv();
+            spyOn(HTMLFormElement.prototype, 'submit').and.callFake(function() {
+                form = this;
+            });
+        });
 
+        afterEach(destroyGraphDiv);
+
+        it('should default to plotly cloud', function(done) {
+            Plotly.plot(gd, [], {})
+            .then(function() {
+                expect(gd._context.plotlyServerURL).toBe('https://plot.ly');
+
+                Plotly.Plots.sendDataToCloud(gd);
+                expect(form.action).toBe('https://plot.ly/external');
+                expect(form.method).toBe('post');
+            })
+            .catch(failTest)
+            .then(done);
+        });
 
+        it('can be set to other base urls', function(done) {
+            Plotly.plot(gd, [], {}, {plotlyServerURL: 'dummy'})
+            .then(function() {
+                expect(gd._context.plotlyServerURL).toBe('dummy');
+
+                Plotly.Plots.sendDataToCloud(gd);
+                expect(form.action).toContain('/dummy/external');
+                expect(form.method).toBe('post');
+            })
+            .catch(failTest)
+            .then(done);
+        });
+
+        it('has lesser priotiy then window env', function(done) {
+            window.PLOTLYENV = {BASE_URL: 'yo'};
+
+            Plotly.plot(gd, [], {}, {plotlyServerURL: 'dummy'})
+            .then(function() {
+                expect(gd._context.plotlyServerURL).toBe('dummy');
+
+                Plotly.Plots.sendDataToCloud(gd);
+                expect(form.action).toContain('/yo/external');
+                expect(form.method).toBe('post');
+            })
+            .catch(failTest)
+            .then(function() {
+                delete window.PLOTLY_ENV;
+                done();
+            });
+        });
     });
 });