55 Park Road, 
Email is still the number one way attacks get into a business. Fake invoices, stolen Microsoft 365 passwords and malicious attachments all arrive by email, and they look more convincing every year. Email security from Sydney Technology Solutions stops most of them before they reach your staff, and helps your people spot the ones that get through.
What our email security includes
Spam and malware filtering
Spam, viruses and malicious attachments are blocked before they reach your inbox.
Phishing protection
Links are checked and scam emails are caught, including fake Microsoft 365 login pages.
Impersonation protection
Emails pretending to be your boss, a supplier or your own domain are flagged or blocked.
Attachment and link scanning
Suspicious links and attachments are scanned before staff can open them.
SPF, DKIM and DMARC
We set up email authentication so criminals find it much harder to send email pretending to be your business.
Staff training
Short security awareness training and phishing simulations help staff spot what filters miss.
Built for Microsoft 365
Our email security works alongside Microsoft 365 and the security already built into it, adding an extra layer of filtering and protection. See Microsoft 365 Security for how we harden the rest of your tenant.
When something gets through
No filter catches everything. If a staff member clicks a bad link or enters their password on a fake page, ITDR for Microsoft 365 watches for suspicious logins and inbox rules and locks the account down fast. Think you’ve been hit now? See our cyber incident response page.
How we set it up
1. Review
We check your current email filtering, domain records and recent threats.
2. Configure
We set up filtering, impersonation protection and email authentication.
3. Tune
We adjust policies so real email arrives and junk doesn’t.
4. Train
We roll out security awareness training and phishing simulations.
5. Monitor
We keep policies up to date as threats change.
Why choose STS for email security
Email security works best in layers: filtering, authentication, training and fast response when something slips through. We set up and look after each layer, and keep it tuned so genuine email still arrives. Our email security follows the Australian Cyber Security Centre’s advice on phishing and email authentication, so your business is harder to impersonate.
What our clients say
“They have saved my office from so many email attacks and recovered my data on numerous occasions.”
Robert N., Google review
“Their expertise spans across network security, hardware provisioning, cloud solutions, and proactive cyber security management and training.”
Matts D., Google review
STS is rated 4.8★ on Google. Read more client reviews.
Frequently asked questions
Doesn’t Microsoft 365 already filter email?
It does, and it’s a good start. A dedicated email security layer adds stronger phishing, impersonation and link protection, and we configure both to work together.
What are SPF, DKIM and DMARC?
They are email authentication records that prove email from your domain really came from you. Without them, criminals can more easily send emails that look like they’re from your business.
Will legitimate emails get blocked?
Occasionally a genuine email is held for review. Staff can release it, and we tune the rules so it happens rarely.
Do you provide security awareness training?
Yes. Short training modules and realistic phishing simulations show staff what to look for and show you where extra help is needed.
How much does it cost?
It’s priced per mailbox per month. After a review we give you clear pricing.
Can email security stop fake invoice scams?
Email security reduces the risk by catching impersonation attempts and lookalike domains, but staff awareness and checking payment changes by phone are still essential.
Protect your inboxes
Call (02) 8212 4722 or send us a message to review your email security.