Collecting Phone Numbers In Klaviyo and sending them to Attentive?

Hey @Kelly 

Thank you so much for asking the community a great question. Hope I can help @Mailbox Manny answer this for you!

You do have to ability to add webhooks to a flow, which will allow you to send their phone numbers once they have reached a certain place in a flow. So an example could be you collect their phone number from a Klaviyo signup form and then use that list to trigger a welcome series flow. You can add a webhook at the beginning of the flow that will send the phone number to Attentive. 

The article I linked at the beginning will walk you through how to set it up. However just keep in mind that it can be a little complicated to set up.

Also, @Mailbox Manny is 💯 right, if you don't feel comfortable setting up webhooks in your flows, you can use Attentive forms and send profiles into Klaviyo as an easy alternative. Hope this helps!