Updates to High Volume Email (HVE) Public Preview

Hello,

Is there currently, with the High Volume Email service, a limit to the size of emails sent? We have noticed at times that emails larger than 7-8MB did not go through.

If there is a limit, is it possible to know what it is in order to have a better understanding of the usage capacities?

I have not found information on the maximum size of emails sent in the documentation.

Best regards

Hello,

please provide us with the pricing model. We did a few pilots with our customers and it works very well for their use cases. But without knowing the pricing model they will look for alternatives that they can plan with. So please let us know the pricing, ideally in the next one or two months.

best regards

Thomas Oeser

Simone_LiebalThank you very much for your answer. We have a problem with the fact that we have to open port 587 on our firewall to any destination. This is a security problem for us.

Simone_Liebalin my tenant, which is configured in a hybrid way and therefore each object has dozens of service mailboxes already present, I would like to use an existing one and make it available as HVE; or when I go to create a new mailbox precisely through the new-remotemailbox cmdlet I would like to have the possibility of creating it already that it can be of type HVE.

Also I've another question. What about SPF and DMARC / DKIM for this service? Does this service inherit those set in the various office 365 configurations or which ones?

TobiasKal thank you for your question!
We have heard this request before. Currently, there is no definite list of IP addresses for the HVE service available. However, we are looking into this. Could you help me understand your requirements in this context and why this is something that you would need - is there a flow you are specifically concerned about (incoming / outgoing)? 

JrouziesM 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.

Hi The_Exchange_Team but in an hybrid environment where all mailbox are only cloud but we sync our directory con Entra Connect, and create the mailbox with the command new-remotemailbox can we add in something way the attribute that it will be used for HVE? I didn't see any option actually in new-remotemailbox to make an HVE account.

Thanks.

Hi The_Exchange_Team 

Will SendAS or SendOnBehalf now also be possible with the HVE accounts? To send E-Mail as existing Mailbox Address.

Regards.

Is there any plan for HVE to be usable by some normal users accounts? (maybe through some licensing)

Marketing often wants to send communication from Directors accounts / address, which causes their own account to get locked 24h cause it sent to too many recipients.

We need an IP list for a rule on our firewall. We cannot currently use HVE, otherwise we would have to allow SMTP to all target IP addresses. Will there be an IP address list like here for the HVE servers or is there already one available?

https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide