Allow import of entity reference fields by email

This is extremely useful! Email is sometimes the only reliable way to match up users between different systems, so having the built-in email field for users available to use as a reference greatly simplifies things.

The patch applies cleanly and works great for configuring the feed to reference a user by email. If I run into any issues while running the feed I will report back, but so far this seems great.

Thank you!

I can also confirm the patch still applies cleanly and works like a charm!

Referencing users by email simplifies things a lot when needed.

It would be great if this little patch could be merged into the module for the next release please.

Thank you for a great module!

Thanks for the patch! I also added support for email for the Config Entity Reference target and the Book target. Committed #2 with that change.

Note that there is a similar issue to add support for even more field types, but that one hangs on getting test coverage:
#2998037: Allow more field types to be used as reference filter fields →

Automatically closed - issue fixed for 2 weeks with no activity.