[linkregister]

Because GMail uses SPF, DKIM, and DMARC effectively, I'd say you shouldn't worry about it in general. And I can't really think of anything you could do short of using another email address or provider.

The major email service providers (GMail, Yahoo, Hotmail, iCloud, AOL, Comcast) should already be sticking these spoofed emails in their recipients' spam folders.

If you rely on communication with a less- or un-managed email server, then you might have issues, since they might not be filtering based off of SPF, DKIM signatures, or DMARC policy.