Plugin installed incorrectly. Rename plugin directory 'swiftmail.backup' to 'swiftmail'.
This is an old revision of the document!
Emptying the cache in Internet Explorer 10 and higher
1. Within the Extras menu, click on Delete Browser History.
2. Select Temporary Internet and Website Files as well as Cookies and Website Files aus.Retain Privileged Website Files should not be selected.
3. Confirm by selecting Delete.
1. Click on the screw symbol and select Internet Options.
2. Select the tab labeled General, then within the Browser History click on Delete.
3. Select Temporary Internet Files and Cookies and Website Files. Retain Privileged Website Files should not be selected.
4. Confirm by selecting Delete.