A supplier changes its bank details just before a payment run. A senior executive asks for a confidential transfer. An existing email conversation suddenly introduces a different person to approve an invoice.

For procurement and finance teams, the difficult question is often whether a plausible business request is authorized, rather than whether an attachment looks obviously malicious.

An email security evaluation should reflect those decisions. The six options below are selected using public product capabilities and workflow fit for business email compromise and supplier impersonation; the comparison does not include hands-on benchmarks. They form a focused shortlist for these risks.

Any broader services in an existing Mimecast deployment still need to be accounted for when planning a replacement.

Build the evaluation around a payment-change request

Use a small set of approved examples: a lookalike supplier domain, a suspicious request from a genuine account and a legitimate change that deserves to proceed. Ask each vendor to demonstrate how the message is assessed, what the employee sees and how an investigator reaches a decision. Include the procurement or finance owner, because a security console cannot determine every business authorization by itself. Establish how the email decision connects to your payment-verification process and who can pause a transaction. Also examine whether related messages can be found, how mistaken actions are reversed and what evidence remains available for review.

1. Noon Security for combining impersonation defense and employee guidance

Noon Security provides executive and supplier impersonation detection, warning banners and coordinated threat removal across mailboxes, supported by employee training. It is relevant when finance and procurement need technical protection alongside clear guidance about suspicious requests. During evaluation, inspect the warning from the employee’s perspective: does the recipient understand the concern and know whom to contact? Then have the security owner walk through the investigation and removal process. Use training tied to a realistic approval responsibility, and confirm that the lesson points to your established verification route. The objective is a consistent response across the inbox, the employee and the business process.

2. Abnormal AI for requests that depart from established communication

Abnormal’s BEC protection analyzes communication relationships, behavioral anomalies and message content associated with impersonation and invoice fraud, including messages from legitimate domains. Evaluate it with examples reflecting how suppliers normally interact with your organization. Ask the investigator to explain why a payment request deserves attention and which facts would resolve the uncertainty. Include a valid first-time supplier so the exercise is not limited to familiar relationships. For procurement, the useful result is a clear handoff between email analysis and business verification, with enough context to contact the right person without treating every unusual message as proof of fraud.

3. Proofpoint Core Email Protection for relationship-aware BEC analysis

Proofpoint Core Email Protection analyzes sender behavior, message content, relationships and reputation to identify BEC, including supplier-invoice fraud tactics. Include it when comparing how a security team investigates a plausible request without an obvious malicious file. Have the team trace the case from the initial alert to the information shared with accounts payable. If the proposal includes additional supplier-risk or domain-protection capabilities, ask for their scope separately and demonstrate the parts you expect to use. A sound evaluation should identify which person owns each decision and what action follows when technical suspicion and business context do not immediately agree.

4. Check Point Email Security for visibility into partner risk

Check Point Email Security’s Partner Risk Assessment identifies business partners from email activity and displays indicators of possible compromise in a partner-risk dashboard. This is relevant when analysts need to place a suspicious supplier request in a wider relationship context. Ask the team to show how an indicator becomes a reviewable case and how procurement would be informed. Establish the meaning of each status before staff use it in a business decision. A possible compromise should prompt investigation through your agreed process; it should not be treated as a complete assessment of a supplier’s overall security or authority to request payment.

5. IRONSCALES for BEC investigation with configurable response

IRONSCALES BEC protection combines communication baselines, content analysis and authentication signals, with configurable automation for related-message remediation. It warrants evaluation when a team wants to connect a reported request with investigation of similar messages. Have an analyst review a suspected invoice diversion and explain which actions can be automatic and which require approval. Then introduce a legitimate message that shares some characteristics with the suspicious one. This tests the clarity of the decision process and the recovery path. Finance colleagues should leave the demonstration understanding when a payment remains paused and who can authorize its release.

6. Barracuda Integrated Email Protection for behavioral and intent analysis

Barracuda Integrated Email Protection analyzes email behavior, language, intent and communication relationships to identify impersonation and BEC attempts. Evaluate it against the range of supplier interactions your staff handle, including new relationships, urgent requests and messages involving several approvers. Ask the security team to demonstrate the information it would pass to procurement when a request appears suspicious. Also review how a cleared business message returns to normal handling. The practical buying question is whether the proposed configuration supports a timely, explainable decision while preserving your established separation between investigating email and authorizing a financial change.

Connect the tool to a decision that someone owns

Run the pilot with security, procurement and finance together. Ask each participant to explain their next action when a supplier message is flagged, when it is inconclusive and when it appears legitimate. If two teams assume the other will make the callback or pause the payment, resolve that gap before choosing a platform.

Keep a record of the demonstrated workflow and the product capabilities included in the proposal. Then assign responsibility for maintaining supplier contacts, reviewing alerts and teaching the verification process. An email security product can contribute evidence and response controls. The purchasing decision is strongest when those capabilities fit a complete business process, with an identifiable person accountable for every approval and exception.