End User Communication. You may use End User Data to communicate directly with end users, provided that such communication is: (i) with technical and billing contacts, (ii) required under applicable law, or (iii) consented to or requested by the end user. In all cases, you will ensure that any communication with end users is conducted in accordance with all applicable laws (including obtaining all required end user consents). Notwithstanding the foregoing, you shall not send marketing messages to end users within any product experience integrated with Atlassian products without the explicit written consent of Atlassian.
Further explanation of the implication of this provision by @efisher can be found here: