They are both commercial, as neither is about a specific customer transaction. I see nothing about office hours mentioned below. Have you read this?
https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-businessQ. How do I know if what I’m sending is a transactional or relationship message?
A. The primary purpose of an email is transactional or relationship if it consists only of content that:
- facilitates or confirms a commercial transaction that the recipient already has agreed to;
- gives warranty, recall, safety, or security information about a product or service;
- gives information about a change in terms or features or account balance information regarding a membership, subscription, account, loan or other ongoing commercial relationship;
- provides information about an employment relationship or employee benefits; or
delivers goods or services as part of a transaction that the recipient already has agreed to.