Weed out disposable, non-existent domain or invalid emails to prevent community spamming or more power to free trials
ZeroBounce is the leading online email verification system created to ensure that companies sending complex and high volume email avoid deliverability issues. This is accomplished through invalid email address and bounced email elimination, IP address validation, and verification of key recipient demographics.
Email Verification Add-on is a tool for bulk email verification directly on Google Sheets, where you have contacts collected
Weblegit Email validation service provides the simplest and powerful way to make sure that you do not loose real users just because they made a typo mistake with their email. Single line code for integration. Weblegit validation reduces spam emails, decreases the bounces, saves $$ cause you send emails to only valid addresses.