Please consider adding the ability to compare two fields so that the web form designer can help to verify that the email address is entered correctly without error. Most website forms ask for the email address and then a second time to verify that the two fields were entered the same. If they are the same, the form is processed. If they are different, the form warns the person that the two fields don't match. See sample attached.
Also, have the ability to check in the field(s) to see if the email has the proper format, e.g., firstname.lastname@example.org/com etc. See sample attached (In-Field Email Verification Validity).