---
title: "Authenticate: DuoCircle Email Authentication Products"
description: "DuoCircle"
image: "https://www.duocircle.com/images/og-default.png"
canonical: "https://www.duocircle.com/products/authenticate/"
---

Multi-region G2 Category Leader · Free Mail Flow Monitoring · BIMI hosting 

# Authenticate.  
Prove your domain is yours. 

Most email problems aren't really email problems. They're authentication problems. A spoofed message that bypasses your DMARC. An SPF record that's quietly broken because you added one too many vendors. A DKIM signature that fails on a mailing-list forward. Each one is invisible until it costs you a deal.

[ Talk to an Expert → ](/contact/) [ See the products ](#products) 

DMARC Report · widgets.com 

SPF

PASS

aligned

DKIM

PASS

selector1

DMARC

PASS

p=reject

DMARC aggregate, last 7 days 12 reporters 

847K

messages

99.4%

aligned

524

spoof attempts blocked

AutoSPF flatten 3 / 10 lookups 

v=spf1 include:\_spf.duocircle.com \-all

// flattened from 14 vendors, refreshed 12 min ago

What's in this group 

## Three products, one engineering team

[ 01 SPF Management (AutoSPF) Automatic SPF record management that stays under the 10-DNS-lookup limit. The first net-new product DuoCircle built after our 2014 founding, now running for a $16 billion IT services firm. Learn more → ](/email/spf-management/)[ 02 DMARC Reporting (DMARC Report) Aggregate and forensic report processing, parsed and presented so you can act on what you receive. Plus BIMI hosting once your VMC certificate is in hand. Multi-region G2 Category Leader for DMARC Software. Learn more → ](/email/dmarc/)[ 03 Mail Flow Monitoring (free) Round-trip SMTP and IMAP monitoring with multi-channel alerts (email, SMS, webhook, PagerDuty, Slack). Free, continuously running since 2018\. Watching mail flow shouldn't require an enterprise budget. Learn more → ](/email/mail-flow-monitoring/) 

How they work together

## Layered standards.  
Single accountable party. 

SPF, DKIM, and DMARC are layered standards, not separate problems. Get one wrong and the others can't compensate. Many vendors price each layer separately, treat reporting like a premium add-on, or assume you have an internal email-deliverability specialist who will wire it all up.

Our bet is the opposite: authentication is plumbing, plumbing should work, and the team that builds plumbing should know what they are doing. AutoSPF, DMARC Report, and Mail Flow Monitoring share an engineering team and a single accountable party. When something goes sideways across two of them, you don't get a triage scavenger hunt. Once you have a VMC in hand, the BIMI side is hosted from inside DMARC Report rather than spun up as a separate vendor.

Who these products are for 

## The audience

- IT teams managing complex sending environments (multiple ESPs, marketing automation, transactional providers, payroll, helpdesk, all sending as the same domain)
- Mid-market organizations without a dedicated email-deliverability hire who don't want to spend like they do
- Agencies and MSPs monitoring authentication for portfolios of client domains
- Compliance-driven sending programs (Google/Yahoo bulk sender requirements, BIMI prerequisites, regulated industries that require DMARC enforcement)

When to look elsewhere 

## We're not the right answer if

**You need a VMC certificate procured for BIMI.** You'll get that from a Certificate Authority (DigiCert or Entrust). DMARC Report hosts the BIMI infrastructure once you have the VMC, but issuing the certificate itself is a CA function, not something we sell.

**Your organization already has an in-house email-deliverability function** with proprietary tooling. Our portfolio is a substitute for tooling, not a substitute for an internal team.

## Talk to an expert about your authentication setup

Same-day response. Real expert on the call. We tell you what's wrong, what to fix first, and what to ignore.

[Talk to an Expert→](/contact/)

```json
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```

```json
{"@context":"https://schema.org","@type":"WebSite","name":"DuoCircle LLC","url":"https://www.duocircle.com","description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","publisher":{"@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]}}
```

```json
[{"@context":"https://schema.org","@type":"CollectionPage","name":"Authenticate: DuoCircle Email Authentication Products","description":"DuoCircle's email authentication portfolio: SPF Management (AutoSPF), DMARC Reporting (multi-region G2 Category Leader), and free Mail Flow Monitoring.","url":"https://www.duocircle.com/products/authenticate/","isPartOf":{"@type":"WebSite","name":"DuoCircle","url":"https://www.duocircle.com"}}]
```