Microsoft weights sender reputation via SNDS and JMRP, and rejects unauthenticated bulk mail to consumer Outlook.com addresses.
What email consent management is#
Consent is the documented permission a recipient gives to receive marketing email. Laws differ on whether it must be express (opt-in) or may be implied (existing relationship), and on how long it lasts.
Why it matters#
Consent is the legal basis for marketing mail in most jurisdictions and the practical basis for good deliverability: people who asked for mail rarely complain.
Setting up email consent management for Outlook and Microsoft 365#
- Use an unchecked checkbox or a dedicated signup form; never pre-tick.
- Record timestamp, IP, source, and the exact wording shown at consent.
- Use double opt-in for marketing lists where feasible.
- Separate consent for different purposes (newsletter vs partner offers).
- Refresh consent for contacts older than two years with no engagement.
How Outlook and Microsoft 365 reports results#
Open a delivered test message in Outlook and Microsoft 365 and view the original or headers. Look for Authentication-Results and any provider-specific verdict headers. Use the provider's sender dashboard for aggregate reputation.
Common mistakes#
- Bundling marketing consent into terms of service acceptance.
- Losing consent records during a CRM migration.
Frequently asked questions#
Is double opt-in required by law?
Not explicitly in most jurisdictions, but it is the easiest way to prove consent under GDPR and CASL and it improves list quality.
Does Outlook and Microsoft 365 require email consent management?
Microsoft weights sender reputation via SNDS and JMRP, and rejects unauthenticated bulk mail to consumer Outlook.com addresses. Treat email consent management as required for any meaningful volume.