Organizations are often concerned that their legitimate e-mails will not get through to their recipients. Due to the immense volume of spam on the Internet, many networks have setup filters to reject e-mail that might be spam. To combat this, JangoMail takes many proactive measures to ensure our customers' e-mails get through to their recipients, and that these e-mails aren't falsely identified as spam. Below are some of the ways we ensure optimal e-mail deliverability.

1. Participation in whitelist programs
   JangoMail currently participates in several whitelist programs which helps ensure our customers’ e-mails are delivered to their recipients’ in-boxes. JangoMail has whitelisting agreements with AOL, Juno/Netzero, AT&T Broadband, Comcast, and participates in third-party whitelisting programs such as Return Path's Sender Score Certified program.
   
   
2. Staying off e-mail blacklists
   A controversial, yet still widely used method of spam filtering is subscribing to one or more publicly available e-mail blacklists. Blacklists contain IP addresses of companies that are known to have a record of spamming. JangoMail aggressively monitors DNS based blacklists and takes proactive measures to protect its IPs from being listed.
   
   
3. Publishing Sender Policy Framework (SPF) Records
   JangoMail publishes Sender Policy Framework (SPF) records for not only the domain jangomail.com, but for the domains we host on behalf of our customers. SPF is an open standard that fights e-mail address forgery and makes it easier to identify spam, worms, and viruses via records in the Internet Domain Name System (DNS). Customers using their own branded domains in the From Line of their outbound e-mails are encouraged to publish SPF records within their own DNS servers. JangoMail's support team is available to assist in the composition of the appropriate SPF records. For more information on SPF, please see http://spf.pobox.com.
   
   
4. Signing e-mail messages with DomainKeys/DKIM
   These two technologies validate a sender's identity and ensure that an e-mail message is unaltered in transit from sending server to receiving server. JangoMail signs all e-mail campaigns using a jangomail.com From Address with DomainKeys and DomainKeys Identified Mail (DKIM), to ensure optimal deliverability to receivers that authenticate messages based on these technologies, like Yahoo! Mail and GMail. Additionally, JangoMail provides the tools to and instructions for you to set up DomainKeys/DKIM for your own domain if you do not use a jangomail.com From Address. For more information, see the document: DomainKeys and DKIM Signing with JangoMail
   
   
5. Responding to each spam complaint individually
   Even though our customers send legitimate e-mails that conform to our anti-spam policies, that doesn’t mean that recipients don’t complain. Sometimes a recipient may forget that they signed up for a particular list. Therefore, all spam complaints that are reported to us are responded to individually. We begin with an inquiry to the customer as to how the address in question ended up on the list. After obtaining the relevant information from our customer, we compose a response to the complainant and carbon-copy our customer. Often times, after this process, we will receive an apology from the complainant. This ensures that we maintain an honest, clean, and high-integrity relationship with the Internet community at large.
   
   
6. E-mail server log file monitoring
   A special log file analyzer is used to monitor our e-mail server log files for failed deliveries. This analyzer generates a daily report to our network administrators, who can then determine if there are any domains rejecting e-mail from JangoMail. Sometimes domains inadvertently block e-mail from networks that generate too high a volume of e-mail, even when the e-mail isn’t spam. Because we proactively monitor our log files for these types of blocks, we react almost instantly by contacting the appropriate e-mail administrator to remove the block.
   
   
7. 24-hour monitoring of our network and our customers
   JangoMail administrators proactively monitor the system 24 hours/day to ensure smooth delivery of our customers' e-mails to their recipients. We are also alerted if a customer engages in spamming or sends content that could trigger spam filters on the recipients’ side.
   
   
8. The JangoMail "Spam Check" Feature
   Before you click the "Send E-mail" button in JangoMail, it is recommended that you click the "Spam Check" button. The JangoMail Spam Content Checker uses the SpamAssassin engine to "score" an e-mail for spam content. SpamAssassin is the world's most popular spam filtering software, and it performs over 1,200 tests on an e-mail message. For each test that an e-mail fails, a score is assigned. If the total score is above a certain threshold (usually 5 points), then SpamAssassin classifies the message as spam, and we recommend you make adjustments to your e-mail to get the total score under 5 before you send it out to all of your recipients.