When testing the form in the preview PDF or in PDF, the 'submit by email' button shows the following message:
In English: There is no default mail client or the current mail client can not fulfill the messaging request. Start Microsoft Outlook and set it as the default e-mail messages.
I have checked all the Outlook settings, and Outlook really is my default mail client.
Please, can you help me?
Can you just try to save the form on your desktop and test it from there (whiteout being in Designer)?