EMAIL DELIVERABILITY EXPLAINED
Vendors
This page contains a non-exclusive list of potential vendors and providers to aid readers researching more about a particular topic. No endorsement is intended. No sponsorship was received. Omission of a particular vendor does not mean anything. This page is intended as a starting point, not a definitive directory.
Email Validation (Chapter 6)
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Email Hippo https://emailhippo.com/
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Kickbox https://kickbox.com/
There are many other email validation providers. As discussed in the book, readers are strongly advised to carry out proper due-diligence before selecting a vendor in this space.
IP Certification (Chapter 8)
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Certified Senders Alliance https://certified-senders.org/
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SuretyMail https://www.isipp.com/
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Validity https://www.validity.com/
Useful Block Lists and filters contact points (Chapters 5 and 8)
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The Spamhaus Project https://spamhaus.org/
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Invaluement https://www.invaluement.com/
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NoSolicitado https://www.nosolicitado.org/ (South America mostly)
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Proofpoint https://ipcheck.proofpoint.com/
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Barracuda https://www.barracudacentral.org/rbl
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Cloudmark Sender Intelligence https://csi.cloudmark.com/en/reset
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Broadcom (formerally Symantec) https://ipremoval.sms.symantec.com/
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McAfee SmartFilter and WebWasher https://sitelookup.mcafee.com/
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Webroot BrightCloud https://brightcloud.com/tools/url-ip-lookup.php
Domain and IP Reputation (Chapter 8)
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Talos Intelligence https://talosintelligence.com/
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IBM X-Force Exchange https://exchange.xforce.ibmcloud.com/
Reputation Monitoring (Chapters 5 and 8)
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Postmastery https://www.postmastery.com/
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MxToolbox https://mxtoolbox.com/
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Inbox Monster https://inboxmonster.com/
Automated monitoring is very useful but having a core understanding of your email programme is essential. Do not purely rely on automated monitoring.
DMARC dashboards and consultants (Chapter 11)
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OnDMARC (by Red Sift) https://redsift.com/pulse-platform/ondmarc
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Valimail https://www.valimail.com/
Deliverability consultants
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Word to the Wise https://wordtothewise.com/
Email checkers (for "spammyness")
If you want to know why this list category will always be blank, read the book!