Solution 2 - a combination of Visual Workflow and Process Builder

An alternative way to accomplish the same business requirement is to use a combination of Visual Workflow and Process Builder. Here is the description of the next screenshot:

• Section highlighted as 1: This represents a Flow to send e-mail alerts to all users who do not have profile pictures on Chatter
• Section highlighted as 2: This represents the Flows action from Process Builder on a custom object (reminder notification) to trigger our Flow

The following screenshot represents the solution for business scenario 2 using Visual Workflow and Process Builder: