To "loop someone in" is an idiomatic expression that means to include or involve someone in a conversation, discussion, project, or activity. When you loop someone in, you are making sure that they are aware of what is happening or that they are included in the relevant communication.
Here are a few examples of how this phrase can be used:
Email Communication: "I'll loop you in on the email thread so you can stay updated on the project's progress."
Meeting: "During the meeting, I'll loop in our marketing team to discuss the upcoming campaign."
Informal Discussion: "Let's loop Tom in on our plans for the weekend trip; he might want to join us."
Project Collaboration: "We need to loop Sarah in on the design changes we discussed earlier."
In these examples, "looping someone in" implies that you are including them, providing them with information, or involving them in a particular context or activity. It's a way of ensuring that relevant individuals are kept informed and engaged.