Before exploring the best ways to validate an email, let us answer this question. Why is it important to verify your contacts? Imagine you spend a ton of money on crafting the best marketing campaign, you invested months and months of your precious and limited time to create a large base of contacts and now, after what seems like forever, you are ready to send the emails you so very carefully prepared. You are expecting a great return of investment, but instead of being met by excited customers ready to buy your product/service, you are met by the much-dreaded  bounce email: the address you have been trying to contact is no longer valid. Also known as an NDR, Non-Delivery Report, this means that your message failed to reach a specific recipient. The reasons for this may vary: • The online address is not valid • The email triggered a spam filter • Low sender reputation • The recipient’s inbox is full