Remember when Gmail and Yahoo! raised the bar for email senders in February 2024? Microsoft’s now stepping in with its own set of rules — and if you’re running email marketing campaigns, this affects you.
But don’t panic. These changes are actually a good thing. They’re pushing the whole industry toward better practices (ones we’ve long been preaching!) — and that means better deliverability, better trust, and better results for marketers who play by the rules.
Let’s break down what’s changing, who it impacts, and how you can stay ahead.
What’s changing
Starting May 5, 2025, Microsoft is rolling out new requirements for high-volume senders — specifically, those sending 5,000+ emails a day to Outlook.com, Hotmail.com, and Live.com addresses. If that’s you, it’s time to double-check your setup.
Here’s what will now be mandatory:
- SPF (Sender Policy Framework): Your domain must have a valid SPF record—and it needs to pass. That means your DNS must clearly list the IPs and servers allowed to send on your behalf.
- DKIM (DomainKeys Identified Mail): DKIM must also pass, verifying your messages haven’t been hijacked in transit. It helps prove your emails are legit, and sent by you!
- DMARC (Domain-based Message Authentication, Reporting, and Conformance): DMARC must be in place with at least a p=none policy. It should align with SPF or DKIM (ideally both) to improve protection and reporting.
⚠️ If your emails don’t meet these standards, they’ll start landing in the spam folder — and down the line, they may be blocked altogether.
💡 Note: While these changes apply to those who send 5,000+ daily emails to Outlook.com users, you’d benefit from implementing them even if your list is smaller.
Additional recommendations
Microsoft also strongly recommends following these email hygiene best practices to keep your email deliverability strong:
- ✅ Use a real “From” or “Reply-To” address
- ✅ Include a visible, functional unsubscribe link: Especially in bulk or marketing emails. Make opting out easy — no one likes to feel trapped.
- ✅ Clean your list regularly: Get rid of invalid emails to avoid bounces and keep spam complaints low.
- ✅ Be honest and transparent: Use accurate subject lines and headers, and only email people who’ve given you permission.
Pro tip: We automatically add an unsubscribe link to all emails sent through our platform. No need to worry about forgetting adding it by mistake!
What you need to do
The good news? If you’re a GetResponse customer, you’re not in this alone. We’ve got all the tools and guidance you need to meet Microsoft’s new requirements — and stay ahead of the curve.
Just create an account with GetResponse, add your from address, and our wizard will walk you through this process step by step. Once it’s all set, you’re ready to send your email campaigns!
Whether you’re authenticating your domain for the first time or just want to double-check everything’s set up correctly, we’ve got you covered.
👉 Start with these resources:
And if you’d like to go the extra mile, read our complete guide to improving your email deliverability.
Still have questions?
Our Customer Success team is available 24/7 to walk you through the process or troubleshoot anything that’s unclear.
New to GetResponse?
GetResponse is the email marketing platform that empowers marketers, solopreneurs, coaches, and small business owners with comprehensive, affordable, and easy-to-use tools to grow, engage, and convert their audience.
With over 25 years of expertise, we go beyond email to provide powerful automation, list growth, and content creation tools, making us the go-to solution for those who want to succeed in building their personal brand, sell products and services, nurture their audience, and build a community.
Sign up free today and take advantage of our free onboarding sessions — we’ll help you get your domain properly authenticated and your sending practices aligned with Microsoft’s latest standards.
