--- title: "About AutoSPF | DuoCircle LLC" description: "Automatic SPF flattening and email authentication management. Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains." image: "https://autospf.com/images/og-default.png" canonical: "https://autospf.com/about-us/" --- About # AutoSPF Automatic SPF flattening and email authentication management. Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains. ## Part of the DuoCircle LLC Family AutoSPF is built by [DuoCircle LLC](https://www.duocircle.com), an email security company founded in 2014\. We provide comprehensive email security solutions — from DMARC monitoring and SPF management to phishing protection and outbound email relay — trusted by businesses of all sizes worldwide. Headquarters 5965 Village Way, Suite 105-234 San Diego, CA 92130 Contact [+1-855-700-1386](tel:+18557001386) [support@duocircle.com](mailto:support@duocircle.com) ## DuoCircle Product Family [ Alumni Forwarding Enterprise Email Forwarding for University Alumni ](https://alumniforwarding.com)[ DMARC Report DMARC Reporting & Email Authentication Management ](https://dmarcreport.com)[ InboxIssue Email Deliverability Testing ](https://inboxissue.com)[ MailFlow Monitoring Round-Trip Email Infrastructure Monitoring ](https://mailflowmonitoring.com)[ NuReply AI-Powered Cold Email Outreach ](https://nureply.com)[ OutboundSMTP Enterprise SMTP Relay Service ](https://outboundsmtp.com)[ Phish Protection Phishing Protection & Email Security ](https://phishprotection.com)[ Tenant Migration Email Queuing for Seamless Tenant Migrations ](https://tenantmigration.com)[ DuoCircle Trust Security and compliance evidence, on request, without the procurement gauntlet. ](https://trust.duocircle.com) ## Frequently Asked Questions What is AutoSPF? Automatic SPF flattening and email authentication management. Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains. Who is behind AutoSPF? AutoSPF is a product of DuoCircle LLC, an email security company founded in 2014 and headquartered in San Diego, CA. DuoCircle provides email security solutions trusted by businesses worldwide. How do I contact AutoSPF support? You can reach our support team at support@duocircle.com or call +1-855-700-1386\. For sales inquiries, email sales@duocircle.com. ```json {"@context":"https://schema.org","@type":"Organization","name":"AutoSPF","url":"https://autospf.com","logo":{"@type":"ImageObject","url":"https://autospf.com/images/autospf-logo.png"},"description":"Automatic SPF flattening and email authentication management. 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