Email security

Email security: every email is measured, its rationale is recorded

Email below the trust threshold is quarantined; every action is logged.

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Quarantine

Authentication

SmartMail calculates SPF, DKIM and DMARC itself

A result written by another server that the email passed through in transit cannot be trusted.

PTR record and forward validation
The domain's DNS records are queried directly
The result is always visible, independent of AI

Analysis of a safe email: high trust percentage, passed protocol checks and positive findings

Phishing

Impersonation is caught by following the address trail

Similar domain, display name, reply address, and link are measured separately.

the difference between ornek-lojistlk and ornek-lojistik is highlighted
An email whose display name says the organization and whose address says someone else
A link whose text differs from its destination is considered misleading

Analysis of a risky email: 74 risk score, risky label, and findings regarding payment changes with similar domain names.

Quarantine

Emails below the threshold do not land in the mailbox

It is not deleted; it remains in a separate folder together with its reason.

A user with quarantine permission releases it
Permanent decision for sender or domain name
Corrections are included in the next evaluation

Quarantined emails list: sender, subject and reason for quarantine in each row

Threshold

See the result before changing the threshold

Emails affected by the new threshold are listed before saving.

The company administrator sets the threshold
If desired, it is also applied to existing emails in the mailbox
The administrator's explicit rules come before every prediction

Administration · Settings

Quarantine threshold settings screen: the threshold value and a preview of the emails this value will affect

Privacy

When the email is opened, the sender does not learn this

Remote images are blocked by default; displaying them is the user's decision.

The body is displayed in an isolated frame
Cannot access the hidden script panel
Misleading link is also flagged

Banner in the mail reader stating that remote images are blocked, and a Show images button

Beyond incoming email

Integrity document

Every email is archived with its SHA-256 hash; at that moment, it is re-verified as unchanged.

Send securely

Content and attachments do not go to the recipient's mailbox; only a link valid for 1-30 days is sent.

IBAN change

Fraudulent supplier indicators are assessed together and flagged with a warning reason.

Audit log

Every action with person, time and IP; automatic quarantine as “System”.

Company-level isolation

Each company's data resides in its own isolated space and is not visible to anyone else.

Same reason on mobile

The risky badge and warnings are visible on the phone with the same justification.

How to do it

Step by step

A quarantined email: risky security badge next to the sender name and Remove from quarantine button

Reviewing and releasing a quarantined email

Open the Quarantine folder on the left and click the email you want to review. The quarantine reason appears above the email; for details, click the badge next to the sender name.
If the email is trustworthy, click 'Release from Quarantine'.

The entire document

Quarantine confidence threshold: slider, percentage box, preview of emails to be quarantined at this threshold, and Apply to existing emails button

Setting the quarantine confidence threshold

Open Settings from the left-hand menu and go to the Quarantine trust threshold row.
Drag the slider or enter a percentage in the box next to it. The higher the threshold, the more emails are quarantined.
Read the preview appearing at the bottom. The line "With this threshold... emails are quarantined" and example email subjects show the impact of the threshold on emails in the inbox.
Save the threshold with Save in the row. The saved threshold affects emails received from then on.
If you also want to apply the threshold to emails already in the inbox, click Apply to existing emails and select Yes, apply in the confirmation that opens.

The entire document

Guides

Read the subject in depth

What is email quarantine, why does a suspicious email end up in quarantine?

Email quarantine is the holding of an email deemed suspicious in a separate area before it reaches the inbox

FAQs

How does SmartMail detect phishing emails?

The sender is verified with SPF, DKIM, DMARC, and PTR records; similar domain names, impersonation with international characters, display name and brand impersonation, reply address, and link inconsistencies are measured separately. The entire text is evaluated by AI and the result is written with justification.

Is a quarantined email deleted?

The quarantined email is preserved: it stays in a separate folder together with the reason for quarantine and can be released by a user with quarantine permission. These corrections are saved and taken into account in subsequent evaluations.

Can the quarantine threshold be changed?

Yes. The company administrator sets the threshold. Which emails the new threshold will affect is listed before saving, and if desired it is also applied to existing emails in the mailbox.

All questions

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