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DuoCircle LLC

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560 reviews
  • 9 profiles
  • 9 categories
Average star rating
4.8
#1 in 1 categories
Grid® leader
Serving customers since
2014
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DMARC Report

469 reviews

Built specifically for MSPs and large domain portfolio reporting, DMARC Report is a powerful reporting tool for measuring the quality of outgoing emails and watching out for sneaky cyberattacks. You can safeguard your outgoing emails from threats like domain forgery, email spoofing, and other phishing attacks. DMARC Report gives businesses an inside look at how their customers receive or react to their messages. It also allows them to identify whether malicious activity like domain forging may be taking place on other networks outside of theirs; it's just good cybersecurity practice!

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Phish Protection by DuoCircle

46 reviews

A cloud-based, integrated, email protection suite that stops phishing, malware, spam and spoofing without installing any expensive anti-phishing tools.

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AutoSPF

21 reviews

Overcome the 10 Lookup Limit on SPF records with AutoSPF. SPF flattening and management powered by Cloudflare.

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OutboundSMTP

13 reviews

A High Performance Outbound SMTP Service

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Mailflow Monitoring

4 reviews

Mailflow Monitoring alerts you, in real-time, to down email servers and helps diagnose excessive delivery delays. Things that can negatively impact your business if not corrected quickly. And it's FREE.

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Tenant Migration

3 reviews

Tenant Migration is an enterprise-grade email queuing service designed to ensure zero email loss during Office 365 or Google Workspace tenant migrations. By capturing and securely storing incoming emails for up to 45 days, it guarantees uninterrupted communication throughout the migration process. Key Features and Functionality: - Unlimited Mailboxes and Storage: Accommodates any number of mailboxes without storage limitations, ensuring scalability for organizations of all sizes. - High-Capacity Servers: Utilizes robust servers capable of handling large volumes of emails efficiently. - Automatic Failover: Automatically queues emails whenever the primary mail server is unavailable, preventing any loss of communication. - Message Replay: Offers an exclusive feature that allows for the redelivery of messages, providing a safety net in case of initial delivery failures. - Real-Time Control Panel: Provides an intuitive interface to monitor queued messages and manage their delivery with ease. - 24/7 Technical Support: Ensures round-the-clock assistance through live chat, phone, and email to address any issues promptly. Primary Value and User Solutions: Tenant Migration addresses the critical challenge of email loss during tenant migrations by offering a reliable and secure email queuing solution. It mitigates business risks associated with email downtime, ensuring that no messages are lost even when the primary mail server is down. This service is particularly valuable for organizations undergoing mergers, acquisitions, or any scenario requiring tenant migration, providing peace of mind with its SOC 2 certified platform and straightforward setup process.

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DuoCircle Spam Filtering

2 reviews

The DuoCircle enterprise email security with its SMTP gateway incorporates the features that you’d expect in an Enterprise Grade Spam Filtering solution at a fraction of the cost.

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Mail Hosting Services

1 review

Secure, easy to use email IMAP/Webmail accounts for business.

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Spamsentinel

1 review

SpamSentinel is an advanced email security solution designed to protect your HCL Domino environment from spam, phishing, and other email threats. Reliable & Secure – It provides real-time spam filtering, malware scanning, and anti-phishing protection to keep your organization’s email safe and efficient. Seamlessly integrating with HCL Domino, SpamSentinel is easy to deploy and highly effective at reducing unwanted email clutter.

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DuoCircle LLC Reviews

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Profile Name
Star Rating
501
57
1
0
1
Alpesh P.
AP
Alpesh P.
04/02/2026
Validated Reviewer
Verified Current User
Review source: Organic

Email Authentication made easy - config & reporting!

Easy & intuitive interface - clear & easy to follow instructions (<1min per domain) Quick customer service and resolution. Happy customer/partner since Feb'2022
SC
Stacy C.
Founder, Milepost 42
03/31/2026
Validated Reviewer
Review source: Organic

Great tool to help with DMARC monitoring

I've been using DMARC Report for a few years now. It's easy to set up a new domain, and the reports and charts are clear and easy to understand. Another thing that's useful is the ability to set up "teams" to allow my clients to view their specific information. The option to send email notifications is a good addition; this can be especially useful when setting up a new domain, to get a quick eye on anything that might need tweaking. I like the "hosted DMARC" option as well; makes it easier to review and tweak settings all in one place for the domains I manage. I also like that it's easy to set up MTA-STS for a little extra security.
JG
James G.
03/31/2026
Validated Reviewer
Review source: Organic

Effortless Email Management and Security Boost with DMARC Report

I appreciate how DMARC Report helps me manage all my clients' email security and DNS records efficiently. The dns wizard makes it easy to create the appropriate DNS records, which is a big relief. I particularly like the daily reporting feature that allows me to easily see the status of my clients' email security. It's incredibly convenient to have everything in one place, and the initial setup was very easy.

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HQ Location:
San Diego, CA

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@duocirclellc

What is DuoCircle LLC?

Reliable and Secure email hosting services for SMB and Enterprise. Safely processing over 100 million emails per month for our customers. Enhanced gateway security and filtering, inbound email security, email service backup and outbound SMTP using a new high quality infrastructure for top quality results that our customers deserve. Products include, Secure email gateway, email backup MX, email forwarding, outbound SMTP and more...

Details

Year Founded
2014