What is an opt-in process?
An Opt-In process is conducted by us to find out if the contacts in the list are ok to receive messages from third party. It is a kind of permission taken from the contacts to send messages to them. Therefore if your clients send messages to these contacts they would not be spammed. This is the only way how a list can be termed Opt-In. All the contacts in this list have agreed to receive mails from third parties as they click on the option OPT-IN. If they do not wish to receive emails from third parties, they click the option UNSUBSCRIBE and we delete them from our lists. Therefore it is absolutely fine for your clients to send emails to these contacts.
