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Email & File Security

Advanced protection for business email, links, and files

Managed email and file security designed to reduce phishing risk, improve visibility, and add stronger protection around the tools your staff use every day.

What this service offers

Smarter protection for email, attachments, links, and business files

Email remains one of the most common ways cyber threats reach a business. Malicious attachments, fake login links, impersonation emails, and unsafe file sharing can all create risk for staff, systems, and data. Avellite’s Email & File Security service adds stronger protection around inbound and outbound email, while also extending security controls into platforms such as Teams, OneDrive, and SharePoint.

The service is designed to do more than just filter spam. It can inspect attachments safely, analyse email content and behaviour, rewrite and check links, and categorise messages more accurately so users have a clearer and safer email experience. It can also help identify risky or inappropriate file activity across collaboration platforms, improving visibility beyond the inbox alone.

Everything is managed by us, giving your business a more controlled and supportable approach to email and file security without relying on users to judge every threat correctly themselves. The aim is to reduce phishing exposure, improve day-to-day protection, and give you better insight into what is being blocked, delivered, or quarantined.

Attachment sandboxing
Suspicious attachments can be opened in a safe isolated environment to check whether they behave maliciously before they reach the user.
Inbound and outbound analysis
Emails can be inspected both coming in and going out, helping reduce external threats and spot risky behaviour leaving the business.
URL rewriting and checking
Links in emails can be rewritten and scanned so that if a user clicks them, they are checked more safely instead of going straight to a pote
Smarter email categorisation
Messages can be grouped by spam, promotions, greymail, and quarantine to improve visibility and reduce inbox clutter.
Managed by Avellite
The platform is deployed, managed, and overseen by us rather than left as an unmanaged add-on.
Extended file security
Protection can also extend into Teams, OneDrive, and SharePoint to help reduce risks linked to shared files and collaboration tools.
What you get

What you get from this service

This service is for businesses that want stronger email protection, better control over file-based threats, and a more practical way to reduce phishing risk across Microsoft 365 environments.

  • Managed email security software configured and overseen by Avellite
  • Inspection of inbound and outbound email activity
  • Attachment sandboxing for suspicious files
  • Detect compromised staff members and inbound mail.
  • URL rewriting and safe link checking within email
  • Filtering and categorisation for spam, promotions, greymail, and quarantine
  • Reporting on blocked and allowed senders, domains, or other entities where required
  • Extended scanning for platforms such as Teams, OneDrive, and SharePoint
  • Better visibility into email and file-related threats across the business
  • Improved protection against phishing and malicious attachments
Delivery

How we deliver it

We start by reviewing how your business uses email and file-sharing platforms, where the biggest risks are, and what level of visibility and control you want. From there, we put the right protection in place and configure it around your environment, users, and security priorities.

Once active, the platform can inspect inbound and outbound mail, analyse attachments, and check links more intelligently before users interact with them. Attachment sandboxing helps by opening suspicious files in a safe isolated environment first, allowing harmful behaviour to be identified without putting the user’s device or the wider business at risk. URL rewriting works by changing links inside emails so they can be checked at the point of click, helping protect users from being taken to malicious websites even if the original message looked convincing.

The service can also sort messages into categories such as spam, promotions, greymail, and quarantine. For non-technical users, greymail usually means legitimate but low-value messages such as newsletters, routine mailing lists, or bulk marketing emails that are not necessarily dangerous but can clutter inboxes and distract staff from more important messages.

Where needed, we can also provide reporting to show what has been blocked, what has been allowed, and which senders, domains, or entities are creating the most noise or risk. Combined with scanning across Teams, OneDrive, and SharePoint, this gives businesses a broader layer of protection around both communication and file-sharing, rather than treating email as the only point of concern.

Our clients

Next steps

A simple way to strengthen email and file protection

Whether your business is seeing more phishing attempts, wants tighter control over attachments and links, or needs stronger protection across Microsoft 365 tools, we help put the right service in place.

  1. 1

    Discuss your current risks

    We look at how email and file sharing are being used, where the main exposure points are, and what protection is already in place.

  2. 2

    Define the right protection setup

    We recommend a suitable approach based on your users, your platforms, and the level of security and reporting you need.

  3. 3

    Deploy and manage the service

    We configure the platform, apply the right controls, and manage the service on an ongoing basis to help keep your business safer.

Common questions

Email & File Security FAQs

A few of the questions businesses often ask when reviewing email and file protection.

What does email security software actually do?

It helps inspect, filter, and control email traffic so malicious messages, suspicious attachments, and harmful links are more likely to be identified before they can cause problems.

Attachment sandboxing means a suspicious file is opened in a safe isolated environment first, so the system can see how it behaves without exposing your users or devices to the threat directly.

URL rewriting changes links inside an email so they can be checked more safely when a user clicks them. This helps reduce the risk of someone being taken to a phishing page or malicious website.

Inbound email checks help stop threats entering the business. Outbound analysis can help identify compromised accounts, risky sending behaviour, or messages leaving the business that should be reviewed.

Greymail is usually legitimate bulk email that is not necessarily harmful, such as newsletters, automated notifications, or promotional subscriptions. It is often low priority and can clutter inboxes if left unmanaged.

Quarantine is a secure holding area for messages that have been flagged as suspicious or unsafe. This helps stop risky emails reaching users until they can be reviewed or released if appropriate.

Yes. This service is specifically useful for reducing phishing risk by checking links, inspecting message content, analysing sender behaviour, and reviewing attachments more thoroughly.

Yes. Depending on the setup, protection can extend beyond email into collaboration and file-sharing platforms such as Teams, OneDrive, and SharePoint to improve file security more broadly.

Yes. Reporting can be provided where required, including visibility into blocked and allowed entities, helping businesses understand what threats are being stopped and what patterns are emerging.

Is this the right fit?

Signs Your Business Needs Better Email and File Protection

This service is often the right fit when your business wants to reduce phishing risk, improve visibility, and add stronger protection around email, links, attachments, and shared files.

A managed service helps ensure the technology is configured, monitored, and maintained properly rather than being left as a set-and-forget product.

Free consultation

BOOK AN IT SUPPORT CONSULTATION

Tell us what you’re trying to achieve. We’ll recommend a practical next step and outline the fastest route to impact.

  • 15–30 minutes
  • No obligation
  • UK-wide support