undescriptive error message when requiredEmail field is not an email address

[michielbdejong]

if i pass 'michiel@unhosted' or null in the requiredEmail option, i get:
We are very sorry, there has been an error!
To retry, you will have to close this window and try again.

instead, to help RPs have an easy debug experience, it could say something more descriptive like:
Required email address 'michiel@unhosted' not recognized!
To retry, you will have to close this window and try again.

[skinny97214]

Agreed that we need a more descriptive verbose error message. All debugging info for developers and RPs belongs in the [read more] section.

[shane-tomlinson]

Since requiredEmail has been deprecated, I am closing this.