Email filters – an introduction
Email filters are great at keeping bad stuff out – junk mail, phishing attempts, suspicious attachments. But what if the threat doesn’t come in… what if it goes out?
If someone gains access to your email account, they can quietly start sending malicious emails to your customers, suppliers or colleagues – from your address. The damage to your reputation could be significant before you even notice.
That’s where outbound email protection comes in – and it’s something many businesses overlook.
The hidden risk
Most businesses have some form of inbound email filtering – stopping spam, blocking viruses, catching dodgy links. But that’s only half the story. If an attacker compromises your email account, they can:
- Send spam or phishing emails posing as you
- Target your clients or partners using your brand name
- Trigger blacklisting of your company domain
- Undermine trust and damage your reputation
- And all without ever touching your device.
What you need: Two-way filtering
The solution? Email protection that works in both directions:
- Inbound Protection – Blocks unwanted or dangerous emails before they reach your inbox.
- Outbound Protection – Scans outgoing messages for suspicious content or unauthorised use – stopping potential damage before it spreads.
It acts as a safety net if an account is compromised or used improperly, helping to protect your brand and your clients.
Best practices
To stay secure, consider:
- Using email filtering tools that offer inbound and outbound scanning
- Enforcing two-factor authentication on all email accounts
- Running regular email security audits
- Training staff to spot signs of compromised accounts
- Monitoring email sending patterns for unusual activity.
Reputation matters
One rogue email can be all it takes to lose a client’s trust. Outbound protection ensures you’re not just defending yourself – you’re defending your relationships.
Need Help?
At CSR Digital, we help businesses put proper protection in place – not just to stop attacks, but to spot and stop damage if something does slip through.
If you’re unsure how secure your email setup is, we’re here to help.
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