www.arclab.com/en/kb/email/how-to-read-and-analyze-the-email...
This article describes how to read and analyze the email header fields and provides information about SPF, DKIM, SpamAssassin
en.wikipedia.org/wiki/Sender_Policy_Framework
Sender Policy Framework (SPF) is a simple email-validation system designed to detect email spoofing by providing a mechanism to allow receiving mail exchangers to check that incoming mail from a domain comes from a host authorized by that domain's admi ...
www.hostingfixes.com/email/what-are-spf-records
SPF records (Sender Policy Framework) are DNS entries that you add to your domain name. They will specify which IP numbers are allowed to send emails from your domain name. If email is spoofed from another location (such as saying that it’s comin ...
msdn.microsoft.com/en-us/library/cc188656%28v=exchsrvcs.149%...
You use SPF records to ensure that destination e-mail systems trust messages sent from your domain. The SPF record is important because it ensures that all the messages from your domain appear to originate from the messaging servers that support the cl ...
www.digitalsanctuary.com/tech-blog/debian/setting-up-spf-sen...
A Guide to Setting Up SPF, SenderId, Domain Keys, and DKIM as spam prevention measures
linuxsysadminblog.com/2012/08/integrate-sendgrid-with-redmin...
One thing everybody wants when deploying applications is integrating them with other applications or services. Two popular apps and services out there for small businesses that manage project management and email are Redmine and SendGrid.
support.sendgrid.com/hc/en-us/articles/200181718-Email-Deliv...
Below are Email Deliverability tips and tricks from leading industry experts. While none of these are required, they all come highly recommend from SendGrid.
Satisfying each of the below conditions are great steps to resolve current or pot ...
support.sendgrid.com/hc/en-us/articles/200185168-SPF-Don-t-E...
Many people may not realize it, but the Sender Policy Framework (SPF) specification has a limit on the number of DNS lookups (10) required to fully resolve an SPF record. One typically quickly exceeds this limit through the reckless use of the include ...
yoast.com/dev-blog/email-reliability/
When you send email from your web server, email reliability is very important. Setting up your SPF record correctly helps tremendously!
senderscore.org
Find out your email reputation score from Return Path's Sender Score reputation rank.
What is Sender Score?
Emails reported as “delivered” aren’t necessarily delivered to an email inbox. Emails can be ...
www.mail-tester.com
mail-tester.com is a free online service that allows you to test your emails for Spam, Malformed Content and Mail Server Configuration problems.
www.mailwasher.net
Introducing MailWasher, the leader in spam filter software, and the easiest way to check and manage your e-mails before you download them to your computer. MailWasher is free to use and won't ever expire. It works with Out ...
www.spamfighter.com
SPAMfighter is a global provider of state-of-the-art computer, mobile and server utility and security products to millions of users from 235 countries.
www.spambully.com
Spam Bully – Email spam filter for Outlook and Outlook Express, Windows Mail in Vista and Windows Live Mail.
www.spamihilator.com/en/
The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
email.about.com/od/outlookspamfilters/tp/anti-spam_ol.htm
You love Outlook, but you hate spam? There are great plug-ins for Outlook that wade through the new mails for you, sorting out the spam automatically. Here are the greatest of the great.
email.about.com/od/windowsspamfightingtools/tp/free_spam.htm
Filtering spam is not a nice job. Fortunately, there's smart software that can rid your Inbox of all the junk mail efficiently and easily. Would you be surprised if some of the best anti-spam tools for Windows were free?
www.techsupportalert.com/best-free-spam-filter-for-the-avera...
Introduction The aim of a spam filter is to reduce the appearance of junk and spam emails. This makes the inbox cleaner and thus, it is easier to check email. The productivity time savings with the addition of spam filters is significant ...
mailtester.com
Check if an e-mail address is valid or not. Find out why a mail bounces. Get technical information about a mail account and it's mail (SMTP) server.
tools.verifyemailaddress.io
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