Is it possible to run a sequence with LinkedIn steps only, if I don't have leads' email addresses?
In short, yes. We have a temporary workaround.
Right now, Amplemarket uses an email address as a contact’s identifier when syncing with the CRM integrations. This is why we always request the email address to create new sequences, even if there’s no email stage.
However, you can workaround this to an extent. One way to add leads to a sequence without having an email address is add a unique fake email to each lead. For example, email@example.com.
This isn't a permanent workaround, and we are discussing the opportunity to use a different identifier for a lead, such as a LinkedIn url. We'll share these changes as they become available, and you can always reach out to us for more information at firstname.lastname@example.org.