For latest updates on HVE, please also see this post.
High Volume Email (HVE) for Microsoft 365 allows customers to send large volumes of email, primarily to internal recipients without any recipie...
Updated May 06, 2025
Version 3.0
Blog Post
Simone_Liebal
Microsoft
MicrosoftJrouziesM and SteveTH I'll answer your questions together, as they seem to have a similar use case. High Volume Email service is primarily intended for use with line-of-business applications. As such, the ability to SendAs via a regular mailbox is not on our roadmap for GA at this time. However, we greatly value your feedback and encourage you to keep sharing your needs and suggestions as we continue to look at future updates for HVE!
Faber77 To ensure I fully understand your needs, could you please provide more details about what you are looking to achieve with the HVE account when using the new-remotemailbox command in a hybrid environment? Any additional information would be very helpful.