Phone Validation Add-on
Run phone validation directly on Google Sheets
19 Alternatives To Phone Validation Add-on
Droplr
Droplr is a tiny application that aims at helping people share things easier.
Email Validator!
Free JSON API that gives you a simple way to validate emails
Spamihilator
The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
Truecaller
Find a person by a name or phone number worldwide for free using Truecaller.