--- title: "Monthly Spam Filtering Service | DuoCircle" description: "Backend logistics like payment options, renewal rates, bitcoin, wire transfer may not necessarily be huge advancements in our spam filtering technology." image: "https://www.duocircle.com/images/og-default.png" canonical: "https://www.duocircle.com/blog/spam-filtering/monthly-spam-filtering-service/" --- Quick Answer DuoCircle now offers monthly billing for Spam Filtering, Email Quarantine, and Backup MX in response to customer feedback. Annual orders still get a discount (Email Gateway Spam Filtering: $14/month, $90/year, $170/2 years, $242/3 years), and Backup MX is available in 3-month, 6-month, and 1-year terms with discounts on longer commitments. The Smart Email Quarantine Service is an optional add-on for an extra layer of spam defense. Share [ ](https://www.linkedin.com/sharing/share-offsite/?url=undefined%2Fblog%2Fspam-filtering%2Fmonthly-spam-filtering-service%2F "Share on LinkedIn") [ ](https://twitter.com/intent/tweet?text=Monthly%20Spam%20Filtering%20Service&url=undefined%2Fblog%2Fspam-filtering%2Fmonthly-spam-filtering-service%2F "Share on X/Twitter") [ ](https://www.facebook.com/sharer/sharer.php?u=undefined%2Fblog%2Fspam-filtering%2Fmonthly-spam-filtering-service%2F "Share on Facebook") [ ](https://reddit.com/submit?url=undefined%2Fblog%2Fspam-filtering%2Fmonthly-spam-filtering-service%2F&title=Monthly%20Spam%20Filtering%20Service "Share on Reddit") [ ](mailto:?subject=Monthly%20Spam%20Filtering%20Service&body=Check out this article: undefined%2Fblog%2Fspam-filtering%2Fmonthly-spam-filtering-service%2F "Share via Email") ![Monthly Spam Filtering Service](https://media.mailhop.org/duocircle/images/stock/spam-filtering.jpg) Backend logistics like payment options, renewal rates, bitcoin, wire transfer may not necessarily be huge advancements in our spam filtering technology, but they are responses to customer feedback. We now offer a monthly payment option for Spam Filtering, Email Quarantine and Backup MX. You’ll get a massive discount when you order annual service, but if you need monthly billing that option is available right now. Don’t forget to order the optional [Smart Email Quarantine Service](/email/smart-quarantine/), to protect all your users with an additional layer of spam defense. ### Email Gateway Spam Filtering ``` 1 Month - $14.00 1 Year - $90.00 Save 46% 2 Years - $170.00 Save 49% 3 Years - $242.00 Save 52% Order Now ``` ### Backup MX Service ``` 3 Months - $54.006 Months - $102.00 Save 6% 1 Year - $180.00 Save 17% Order Now ``` ![Brad Slavin](https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg) Brad Slavin General Manager General Manager at DuoCircle. Product strategy and commercial lead across the email security portfolio. ## Secure your email infrastructure Protect, authenticate, and deliver. Contact our team to find the right solution. [Contact Sales](/contact/) [Explore Products](/products/) ## Related Articles [ Spam Filtering 5m A Guide On Email Gateway: What It Is And The Importance Of A Secure Email Gateway Mar 4, 2021 ](/blog/spam-filtering/a-guide-on-email-gateway-what-it-is-and-the-importance-of-a-secure-email-gateway/)[ Spam Filtering 5m Anti-Spam Filters and How They Work Jun 19, 2020 ](/blog/spam-filtering/anti-spam-filters-and-how-they-work/)[ Spam Filtering 1m CERT Advisory Symantec and Norton Critical Vulnerability Jul 6, 2016 ](/blog/spam-filtering/cert-advisory-symantec-norton-critical-vulnerability/)[ Spam Filtering 3m Cloud-Based Spam Filtering Protects Your Company Sep 10, 2018 ](/blog/spam-filtering/cloud-based-spam-filtering-protects-your-company/) ```json {"@context":"https://schema.org","@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. 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