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This is real-time email validation service and quite a few companies have started offering it. For example, you can take a look at LeadSpend real-time email verification. Quoting from their website: Validate emails instantly at the point of collection and make sure accurate data is entering your system. Whether you’re obtaining email addresses ...


These are generally the domain names they test. For example, they only allow Emails from say, the popular email domains such as Gmail, Yahoo, Outlook, Live, Hotmail, etc. A popular Email service I use to keep away from Spam is Mailinator However, some email validation forms seem to also block this particular domain for the same reason. It is effective ...


No toggle at first; this instead: “Please provide gender.” User clicks, sees this: “[x ] Male” User makes a choice: “[ o] Female” Like that?


You could use an indeterminate toggle switch, see Bootstrap Switch or Flip Toggle Switch for examples on how to do this. Then you just append the event to fire validation. As for styling, you'll notice in the examples above they use the closure principle of gestalt to communicate there's a state that needs user to complete it to avoid uncertainty. So, in ...


I encountered something very similar. Our solution was to hide the radio button options with an EDIT link and add a SAVE button for validation, then re-hide. Worked for our situation.


You could try making the toggle start in the center of the switch. Then once the user starts interacting with it it toggles only to the on/off states, the centered position is just the default "unset" state. I imagine this would be a bit confusing to users on first glance though so a radio button would probably be more intuitive for required fields. ...

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