---
title: "Chemicals Carriers — Email Security Posture | EFROS"
description: "Email-security posture of 9,577 active Chemicals motor carriers. 68.8% of domains have no enforced DMARC, 13.3% use p=reject. Free, public, source-cited."
canonical: https://efros.com/research/us-trucking-email-security-index/by-cargo/chemicals/
---

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- /Chemicals

By Cargo / Chemicals

# Chemicals Carriers — Email Security

**68.8%** of active chemicals carrier domains have no enforced DMARC. That leaves this segment open to email impersonation, payment-redirect fraud, and cargo theft via phishing.

Edition: 2026-Q2 Segment rank: #10 Carriers: 9,577 Domains: 8,547

By [Stefan Efros](https://www.linkedin.com/in/stefanefros-cyberdefense/), CEO & Founder, EFROS

Updated · May 19, 2026

No enforced DMARC

68.8%

national: 80.1%

p=reject

13.3%

national: 7.5%

Microsoft 365

42.3%

national: 38.1%

M365 + no DMARC (carriers)

2,317

national: 92,822

MTA-STS

4.3%

national: 3.3%

DNSSEC

5.9%

national: 6.1%

Dead domains

365

of 8,547 scanned

Total carriers

9,577

365 with dead domain

## Risk bands — Chemicals carriers

Carrier counts by risk band (composite email-security pain score). Critical = score 70+; Minimal = score <15.

| Risk band | Score range | Carriers | Domains |
| --- | --- | --- | --- |
| Critical | score 70+ | 599 | 576 |
| High | score 50–69 | 2,165 | 2,011 |
| Medium | score 30–49 | 3,846 | 3,491 |
| Low | score 15–29 | 2,422 | 1,954 |
| Minimal | score

## Chemicals vs. national average

No enforced DMARC 68.8% vs 80.1% national

p=reject adoption 13.3% vs 7.5% national

MTA-STS 4.3% vs 3.3% national

DNSSEC 5.9% vs 6.1% national

## What the Chemicals numbers actually mean

**Segment exposure framing.** Chemical freight crosses TSCA, RCRA, and TSCA Section 5 reporting obligations — the email-impersonation risk compounds with chain-of-custody documentation risk.

**DMARC posture.** The chemicalssegment's share of carrier domains with no enforced DMARC sits at **68.8%**, better than the national average by 11.3 points. Chemicals carriers adopt enforced p=reject DMARC at a meaningfully higher rate than the national pool. At the protective end of the distribution, 13.3% of segment domains are at p=reject, the only DMARC policy that actually instructs receivers to drop spoofed mail.

**Microsoft 365 surface.** Microsoft 365 mailflow adoption runs heavier than the national distribution. Every M365 tenant already includes the controls needed to enforce DMARC, so the 2,317 M365 carriers in this segment with DMARC disabled are leaving paid-for protection switched off. That share is **24.2%** of all chemicals carriers — a one-flag-flip remediation set that segment-specific MSPs can clear in a single quarter without touching DNS infrastructure.

**Transport encryption.** MTA-STS adoption sits at 4.3%, materially below the threshold a freight payment-redirect attacker would have to clear to be inconvenienced by transport-layer policy. DNSSEC adoption across chemicals carriers runs at **5.9%** (vs 6.1% national).

**Risk-band shape.** Chemicals's critical-band share is 6.3% versus 8.4% nationally, with the pressure shifting into the high band (22.6% of segment carriers) where one or two control gaps still leave room for impersonation.

**Best-practice control for this segment.** Chemical shippers should treat carrier email-security verification as part of the same compliance posture that produces the manifest — both are chain-of-custody controls.

## Compare Chemicals with other cargo segments

Segments closest in carrier-count rank to Chemicals. Each is scored on the same DNS-derived control set, so the comparison is apples-to-apples.

[### Refrigerated / Cold Chain Rank #978.1% no DMARC · 16,211 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/refrigerated/) [### Intermodal Containers Rank #1179.5% no DMARC · 9,463 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/intermodal/) [### Liquids / Gas (Tanker) Rank #870.9% no DMARC · 16,694 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/tanker-liquids-gas/) [### Oilfield Equipment Rank #1277.1% no DMARC · 8,085 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/oilfield/) [### Household Goods Rank #781.6% no DMARC · 17,343 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/household-goods/)

[← Full US Trucking Email Security Index](https://efros.com/research/us-trucking-email-security-index/) [← All cargo types](https://efros.com/research/us-trucking-email-security-index/by-cargo/) [Switch to state view →](https://efros.com/research/us-trucking-email-security-index/by-state/)

## See where your own domain stands

The research is free and self-serve. Run the same public checks on your own domain in about a minute — SPF, DKIM, DMARC, MTA-STS, DNSSEC, and more — and get a scored report by email. No agents, no credentials.

[Scan your domain free →](https://efros.com/tools/security-scan/) [Email security for fleets](https://efros.com/industries/trucking-company-msp/) [Talk to EFROS](https://efros.com/contact/?source=trucking-email-research)

Data as of 2026-05-20 from public DNS measurements. Statistics are domain-weighted unless noted. Cargo segment membership is based on FMCSA Company Census cargo flags. Methodology: [read the full index](https://efros.com/research/us-trucking-email-security-index/).