Microsoft 365 Spam Filters

Put protections in place to avoid unwanted and dangerous emails.

Get Started

What Are Microsoft 365 Spam Filters?

Spam emails can range from annoying advertisements to dangerous phishing attempts that try to steal personal information or install malware. 

These malicious emails can take many forms, from deceptive messages designed to trick users into revealing their login credentials or financial data, to seemingly harmless attachments that, when opened, infect the recipient's system with harmful software.  

Microsoft 365 spam filters work to reduce inbox clutter by filtering out unwanted messages, enhance security for phishing and malware, and improve your overall productivity by allowing users to focus on important emails without wasting time. By employing a combination of advanced technologies, such as machine learning, heuristic analysis, and real-time threat intelligence, these filters can accurately identify and block a wide range of spam and malicious emails. 

This proactive approach not only minimizes the risk of users inadvertently interacting with harmful content, but also helps to maintain the integrity and efficiency of email communication, ensuring that legitimate and essential messages are delivered promptly and reliably.

 

 

Why Microsoft 365 Spam Filters Matter

When Microsoft 365 spam filters aren't in place, your business is exposed to a flood of unwanted messages.

dyn_inbox_icon

Overwhelmed inboxes

Users are inundated with a massive volume of spam, making it difficult to find legitimate emails

dyn - it security - icon2

Security Risks

The risk of falling victim to phishing attacks, malware infections, and other email-borne threats dramatically increase.
dyn - Vendor Audits - icon1

Decreased productivity

Employees waste valuable time sorting through spam, deleting unwanted messages, and recovering from any security incidents.
dynamic - NIST - icon4

Damaged reputation

Organizations that unintentionally send out spam damage their reputation and have their email servers blacklisted.

How We Help Small Businesses With Microsoft 365 Spam Filters

Our Microsoft 365 spam filters services are designed to safeguard your organization's email from unwanted messages.

  • Connection Filtering to evaluate sender IP addresses and block emails from known bad sources.
  • Content Filtering to analyze the message body, subject line, and attachments.
  • Sender Filtering to verify the sender's identity and ensure the email is coming from a legitimate source.
  • Advanced Spam Filtering to fine-tune spam filtering and identify specific characteristics of spam, such as embedded HTML tags, scripts, and form tags.
  • Outbound Spam Filtering to prevent users within the organization from sending spam, either intentionally or because their accounts have been compromised.
  • Anti-spam policies that define the actions to take on messages based on their spam filtering verdict (e.g., move to junk folder, quarantine, block).

dyn_msft_spam_filters_blog

From Our Blog 

The Email Line of Defense

Email has long been a favorite target of cyber criminals, with “phishing” being the most common form of attack. 

In fact, out of the estimated 347 billion emails that are sent every day, roughly 3.4 billion of them are malicious. 

As a percentage, that may not seem like a lot, but given the sheer number of bad messages being blasted out on a daily basis, it’s no wonder that more than a third of all data breaches involve email.

Because of this, email scanning and filtering needs to be high on every organization’s list of security measures. Not just to declutter spam from inboxes, but also to protect from much more catastrophic attacks.

 

Schedule a Call

Get the most out of your organization's IT

Get in touch with us today   dyn_arrow

Our Core Services

It’s time to partner with an IT services firm that truly understands your complex business and needs. Our services integrate four core offerings and are designed for top-performing small to mid-sized businesses in the Pacific Northwest with 20+ employees.
Go Deeper Arrow Icon

Managed IT Services

Make IT yours with comprehensive managed IT solutions tailored to your firm's unique model and goals.
Go Deeper Arrow Icon

IT Consulting

Take IT to the next level with a top-tier technology partner that goes deeper to deliver on your evolving business needs.
Go Deeper Arrow Icon

Cyber Security

Lock IT down to protect your business, data, and clients with security services engineered for complexity and compliance.
Go Deeper Arrow Icon

IT Audits

Uncover your IT potential with a systematic review of your IT strengths and weaknesses.

We Do IT Differently

A partner rather than a provider, we’re an extension of your team, delivering a personalized IT experience you won’t get elsewhere.

Hand with dollar sign icon

Predictable Pricing

A fixed-fee subscription model provides cost certainty, allowing you to budget with confidence.
Handshake icon

Concierge-Level Service

A dedicated primary technician delivers white-glove service at every touch point.

Lightbulb over head icon

Only Experts

A team of senior specialists from every IT discipline provides the right solution every time.
Chart up and to the right icon

Start Smart

A deep-dive foundational assessment identifies and prioritizes your needs right from the start.
Bagde with check mark icon

Compliance Experts

Deep expertise in standards such as PCI, HIPAA, CMMC, and SOX keeps you compliant.
Three people icon

100% Local

Based right in your backyard, our entire team is local to the Pacific Northwest.
Chat bubbles icon

Committed to Communication

Always up to speed on your IT, your team is quick to respond with a clear plan of action.
Four hands interconnected icon

Personalized Support

Real support from real people who know you and your business, not an automated system.

dyn_comparing_IT

Comparing IT Support Solutions for Small to Mid-Sized Businesses

Not all IT support is created equal.
For small to mid-sized businesses in...

Read More

dyn_cyber_security_101

Cyber Security 101 for Small and Mid-Sized Businesses

If you own a small to mid-sized business, you’re under constant threat of a...

Read More

dyn_audit_benefits

The Benefits of an Audit-First Approach

Let’s talk about reaction. 
Not in Newton’s Third Law sense....

Read More

Get IT Right This Time

You deserve focused, expert-managed IT services that meet your complex needs.
Let’s Talk

FAQs

What are Microsoft 365 spam filters, and why are they important?

Microsoft 365 spam filters are a set of technologies and processes that protect users from unsolicited and harmful email messages. They are crucial for reducing inbox clutter, enhancing security by blocking phishing and malware, and improving user productivity.

How do Microsoft 365 spam filters work?

Microsoft 365 employs a multi-layered approach. This includes connection filtering (blocking emails from known bad sources), content filtering (analyzing email content for suspicious elements), sender filtering (verifying sender identity), and machine learning (continuously improving accuracy).

What are anti-spam policies in Microsoft 365?

Exchange Online Protection (EOP)

Administrators can create and customize anti-spam policies in the Microsoft 365 Defender portal. These policies define the actions to take on messages based on their spam filtering verdict (e.g., move to junk folder, quarantine, block).

What happens if Microsoft 365 spam filters are not in place?
Without spam filters, users would face overwhelmed inboxes, increased security risks (phishing, malware), decreased productivity, damaged organizational reputation, potential legal issues, and increased IT costs.
How does Microsoft 365 keep its spam filters up to date?
Microsoft uses machine learning to continuously improve the accuracy of its spam filters. The system learns from known spam and phishing threats, as well as user feedback.