We often want to send an email that includes a hyperlink to the item or document that triggered the workflow. We can use current item’s "Encoded Absolute URL" for this purpose. However, it always seems to use "http" for the URL protocol. If your site runs on HTTPS then it will not work for you.
As far as I know, there is no out of the box solution to this problem. If you need to use HTTPS, you have no out of the box option.
To solve it, create a custom action that provides a string replace function to use in your workflow. Alternatively, use a 3rd party tool such as the excellent package here: http://www.codeplex.com/spdwfextensions 🙂