Email archiving


Email archiving service to ensure email data integrity & compliance for M365 and other email servers

Send a request now!


Email is the most widely used and relevant communication tool on the Internet. Electronic exchange of sensitive data and files is an efficient and quick way for companies to communicate. Business emails must be archived for a certain retention period and be available for the relevant authorities to inspect. Secure and reliable storage is also essential for later access to important information. Fully automatic and secure archiving can be an enormous relief from the burden on company productivity that comes from this need to correctly store all that data.

Why does a company need cloud-based email archiving?

Retrieval and recovery of archived emails

If a user’s emails are accidentally deleted from the mail server, they can be restored from the archive – at any time with the simple push of a button.

Fully automated and 100% secure cloud archiving

Automatic archiving of all incoming and outgoing email messages eliminates the need for administrators to perform archive-related tasks. In the cloud, all data is stored securely, unalterably and completely.


Automatic archiving: unaltered and unalterable

In accordance with audit-proof archiving, all incoming and outgoing emails are stored automatically and in their original form in Hornetsecurity’s data centers immediately upon arrival and dispatch. This ensures that no important documents are lost and archiving is complete. They cannot be edited or deleted before the set retention period has expired.

All archived emails are securely stored in encrypted databases in certified and secured data centers.

All features of Hornetsecurity email archiving at a glance


Exclusion of individual users from archiving

For example, union messages are excluded from automatic email archiving in order to comply with data protection guidelines.

Marking of private mails by users

Personal emails are protected against access by the auditor, so only the subject can be seen. Thus the privacy of the user is guaranteed for personal emails—without endangering the integrity of the archive.

Archiving of internal emails (optional)

In addition to outgoing and incoming emails, internally sent and received emails can also be archived. These are provided via the journaling function of the mail server and are also stored in their original unalterable form.

Unlimited storage per user included

Each user has unlimited storage, which is valid for the entire archiving period.

Encryption of the transmission path between archive and mail server via TLS

Email Archiving - Easy Email certificate management in the Horntesecurity Control Panel

If supported by the mail server, data is encrypted via TLS during transmission in order to protect against changes in content and attached files.

Regulate retention periods

Different retention periods apply to different types of business emails. Standard business emails have to be kept for six years, accounting receipts or invoices have a ten-year period. Applicant data received by email, on the other hand, must be deleted at the end of the application process. Set the archiving period to anything between 6 months and 10 years.

12 benefits of the easy management of email cloud archiving

Easily find the emails you are looking for

In the daily flood of emails, it can be difficult to keep track of messages. Good search algorithms are needed to find messages and redisplay them without problems. In addition, it must be possible to limit and target the search using various search parameters. This is possible thanks to the comprehensive search functions within email archiving.

Full text index

The full text index makes it very easy to find the emails and attachments you are looking for. All archived messages are fully indexed so that the search time is correspondingly short.

Extensive search criteria
Not only the full text search can be used to find archived emails – search parameters can be narrowed down by individual search criteria such as date, sender, recipient and subject, and searched messages can be identified more precisely and found more quickly.
Compliance, transparency and control
The same legal requirements apply to business emails as to traditional letters. They must be kept and retained for a certain period of time. In addition, it must be ensured that an auditor can access the emails at any time.
Audit access with 4-eyes principle
An email archive must be accessible for auditing at all times. Audit access is provided for this purpose, giving the auditor extended read rights to the stored emails of a specific domain, which can be set up by the IT administrator. Audit access allows the auditor access to the archive for a limited time. Once the audit is complete, the administrator has access to the audit log, in which he can see what data has been viewed.
Audit log/audit trail
A complete log is kept of all access to the email archive, especially when settings such as retention periods are changed. The protocol contains, among other things, the login name and IP address of the user and it cannot be edited or deleted. The audit log can be viewed by the administrator at any time.
No access to content for administrators
In order to prevent misuse of the archived email data of individual users, administrators do not have access to archived user emails. They can only see the metadata, not the content.
Substitute regulation
A user can give another user access to his email archive. Practical for absent or retired employees.
Export of archived data possible at any time
The entire email archive can be exported easily at any time. Customers can either do this themselves, or alternatively Hornetsecurity can carry out the export for a fixed price.
Import function
Emails and their attachments can be imported from other databases into Hornetsecurity’s email archive, whether in .pst or Outlook format. This makes it easy to re-archive older emails.
Unique assignment of archives for changing mail addresses
If a user is given a new email address, the archived messages can be assigned to this new address so that the user can continue to access the data.
Unicode capability

Emails that end up in Hornetsecurity’s email archive are saved in their original format, regardless of the encoding. This applies to different languages and characters as well as to encrypted messages.

Integration of email archiving into the email management system

Integration of email archiving into the email management system

Archiving takes place immediately upon receipt and sending of emails. This prevents manipulation of the individual messages.

Optional: Archiving of internal email traffic.


In order to guarantee the functionality and efficiency of email archiving, integration of spam and malware protection is required.


Fact Sheet

Any questions?