Exchange Online High Volume Email

Timelines and exceptions · All guidance changes

Exchange · Official Microsoft guidanceObserved changes retained

Retained observation

Source metadata changed; retained article content is unchanged.

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Observation details · observed 24 Oct 00:41 UTC

Observed by ChangeIntel: 24 Oct 00:41 UTC
Source update metadata: 3 Aug 22:00 UTC
First observed on this installation: 8 Oct 23:14 UTC
Last successful check: today 00:51 UTC
Next check due: 27 Oct 00:51 UTC

Observation time is not publication time, and a comparison does not establish an effective date. Full source bodies are not published; this page holds generated summaries, section headings and, as the page's license allows, Microsoft's changed wording. A documentation edit does not confirm feature availability in an environment.

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Timeline

From the capture of 24 Oct 00:41 UTC

10 undated sections
6 with conditions

Settings and overrides named on this page

Registry values, policies and cmdlets the source mentions, with the dated steps that name them. Read the source for the values to set.

Reply-To

Requirements, exceptions and scope

What is High Volume Email?RequirementRecommendation2 conditions3 passages
Features: Bypasses antispam; SMTP client submission: Yes, if the mail is destined for one of your Microsoft 365 or Office 365 mailboxes.; SMTP relay: No.…
Service limitsException1 condition1 passage
Unsupported scenariosRequirement1 condition2 passages
Reply-To
Best practicesException1 passage
Set up Billing for High Volume EmailRequirement1 passage
Assign a billing policy to an HVE accountScope1 condition2 passages
Create an HVE accountRequirement1 passage
Edit an existing HVE accountRequirementScope1 condition12 passages
Authentication considerations for High Volume EmailRequirementExceptionScope2 conditions1 passage
Configure your application or device to send email using HVERequirementRecommendation2 passages

Extracted automatically from Microsoft's wording. Confirm dates, conditions and whether they apply to you in the source before acting; a month or quarter is a window, not a day.

Observed history and review priority

Captured 24 Oct 00:41 UTC; extracted 24 Oct 00:41 UTC. Extractor: microsoft-1/9/d9863eb412f92fa5ec3a8ca32e2dd7cfe8095530f456ecb1866608d1166a435d.

Review priority. Extracted assertions require review · Applicability or exceptions require review

0 date changes and 0 condition changes across 1 compared revisions. Suggested check interval: 24 hours.

Earlier unavailable versions and edits between checks are unknown. A missing statement requires review; it does not mean the policy was cancelled. Recovered historical statements are not original revision snapshots.

Retained observations · 3

Compact evidence remains available after full document bodies expire. Earlier extractions can have different vocabulary or capture limitations.

24 Oct 00:41 UTC · 29 candidates
13 Oct 00:08 UTC · 29 candidates
8 Oct 23:14 UTC · 27 candidates

No related evidence found in this installation's recent collection. This does not establish that no announcement exists.

Retained observations

24 Oct 00:41 UTC · shown above
13 Oct 00:08 UTC
The page title or its body outside the tracked passages changed. Review the source for its effect.
8 Oct 23:14 UTC
Baseline for retained history; no earlier retained text to compare.

What changed

First observed 18 Oct 2026

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Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.