Request address details for a given latitude and longitude
Time Zone API provides time zone info for locations(latitude/longitude) on the earth.
Elevation API provides digital elevation model data for locations(latitude/longitude) on the earth.
Exchange Rate API provides foreign exchange rates data
Language Detection API accepts text and returns result with detected language code
Is the e-mail a temporary/disposable e-mail?
That's a common indicator of spamming/trolling, so now there's an API for you so you can easily block it!
Please tell us about your next project and we will let you know what we can do to help you.