Open hyperlink without holding Ctrl in Outlook

To open the hyperlink without pressing or holding Ctrl key, do the following:
1. On the File tab, click the Options button:

2. In the Outlook Options dialog box, on Mail tab, click the Editor Options... button:

3. In the Editor Options dialog box, on the Advanced tab, under Editing options uncheck Use CTRL+Click to follow hyperlink:

4. Click OK.

See also this tip in French: Comment utiliser un lien hypertexte sans appuyer Ctrl dans Outlook.