• How well do the biggest email senders do at reaching the inbox? October 16th, 2014, by ksimpson

    We analyzed millions of inbound email delivery attempts by looking up the abuse contact information for each connecting IP address in the fantastic Abusix abuse contact database ( The following table shows you what percentage of the email from these sending networks and providers actually gets delivered to the inbox of recipients. We need to […]

  • Shellshock: What MailChannels customers need to know September 25th, 2014, by ksimpson

    Yesterday, security researchers disclosed a critical vulnerability in the “bash” program that ships with virtually every Unix and Linux system. This vulnerability enables – in some cases – remote execution of arbitrary programs via the command line, allowing an attacker to gain sensitive information such as password hashes from a target machine. MailChannels Software is […]

  • Using MailChannels SMTP Relay just got easier September 19th, 2014, by dliao

    You may have noticed the MailChannels SMTP Relay Console has received user interface (UI) improvements. Aside from a cleaner, more contemporary look and feel, we’ve also introduced more powerful search, a new reporting functionality and we redesigned the main navigation so it’s easier to access key information quickly.   Advanced Search Advanced Search can be […]

  • Web hosts explain the benefits of MailChannels September 5th, 2014, by dliao

    All web hosts have problems with spam. Which inevitably leads to problems with their servers being blacklisted. Which causes customer service chaos and damaged IP reputations. MailChannels helps web hosting companies isolate and remove spammers from their networks. We polled five of our customers on video about why they rely on MailChannels to throttle outbound […]

  • How to send bulk email June 5th, 2014, by ksimpson

    Our customers often want to know how they can deliver email to enterprise recipients reliably. Usually when this question is asked, the customer has experienced some level of rejection, and has grown frustrated and confused as to why their great email is not reaching the inbox of their clients. Here’s the thing: Delivering email that […]

  • Changes to Yahoo & AOL’s DMARC Policy May 22nd, 2014, by ksimpson

    Yahoo & AOL Mail recently updated their DMARC (Domain-based Message Authentication, Reporting and Conformance) policy to “reject”. The new policy means that messages from Yahoo! and AOL addresses will be rejected by email receivers unless they originate from a Yahoo! or AOL mail server. This change makes it impossible for spammers and fraudsters to impersonate […]

  • MailChannels SMTP Relay customers protected against ‘Heartbleed’ April 10th, 2014, by ksimpson

    MailChannels takes security very seriously. MailChannels cloud services never incorporated the vulnerable software and MailChannels SMTP Relay were not affected by the security flaw discovered earlier this week. Full technical announcement here.

  • Amazon Web Services reveals i2 instance pricing – inadvertently? December 10th, 2013, by ksimpson

    Since the Amazon Re:Invent conference, many have wondered about the pricing of the new i2 instance type, which offers enormous solid state (SSD) storage options. Well, wonder no more. It seems Amazon posted a Slideshare of a talk at the Re:Invent conference, containing not only the performance details of the i3 instance type, but also […]

  • Why we should all be thankful for Nelson Mandela December 5th, 2013, by ksimpson

    Just moments ago, I heard that one of the world’s greatest men has passed – thankfully in peace with his family surrounding him. I was born in South Africa; my family left shortly thereafter, but I continue to have ties to the country through relatives, and had the fortune of visiting there a year ago. […]

  • Why do I have to set up SPF in order to use MailChannels Cloud? November 29th, 2013, by ksimpson

    Our sales people frequently get asked why clients have to update their SPF records before sending email out through MailChannels Cloud, our cloud outbound spam / email delivery solution. SPF (Sender Policy Framework), “is an email validation system designed to prevent email spam by detecting email spoofing, a common vulnerability, by verifying sender IP addresses.” […]