Category: High Volume Email
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Configuring High Volume Email for Payment
For the last two years (or more) that High Volume Email (HVE) has been in preview in Exchange Online it has been a free to use service. From June 1st 2026 it will cost $42 per million recipients (internal, it does not deliver to external recipients) and is billed via an Azure subscription. So how…
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My Issues With High Volume Email
A few months ago (July 2025) I wrote an article on how to set up the new, but still in preview High Volume Email (HVE) service in Microsoft 365/Exchange Online. I’ve been using it for a while now, so here are the issues I have found. Hopefully these get resolved before the product goes into…
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How To Configure High Volume Email Service in Exchange Online (including all the steps)
From end of December 2026 Microsoft will turn off SMTP AUTH connections (basic or legacy auth to SMTP endpoints) in Exchange Online. You are able to turn these back on, for now, but it will finally be removed later in 2027. This will not affect modern authentication connections using an app registration/Enterprise Application in your…
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Implementing High Volume Email with Exchange Online
High Volume Email (HVE) is a new service from Microsoft to allow the sending of up to 100,000 internal emails per day (with a small number external) which is in excess of the current limits of 10,000 per day (depending upon your licence). Here are my initial observations on setting this service up. During preview…