Send out this opt-in welcome link and the accompanying message to facilitate a fully compliant conversation with your contact!
You will be able to send the Outbound Opt-In Welcome Link message when uploading a contact list ONLY on the first contact import. Using the Opt-In Welcome Link is not mandatory upon contact import, but is a best practice.
You can turn this feature off if you like, upload your contact list first, and then individually send the Opt-In Welcome Link in any individual conversations you have with your contacts. Individual conversations would be the only place you can use this feature at this time. Unfortunately, you won’t be able to mass send this Outbound Opt-In Welcome Link to a group of contacts if you didn’t have this feature enabled when you first uploaded your contact list.