Sender Reputation: 9 places to test for free

So you want to know what your sender reputation is? There are a number of online tools that will test your IP address and give you your reputation score. If you do not know what Reputation is, why it is important and what it is all about then you should read this article first.

So to the top tools for identifying your sender reputation are as follows….

SendMail Reputation Tool

Trend Micro, Symantec, Sophos, Kaspersky, Avira and many other mail filters make use of SendMail Repuation data when deciding whether or not your message belongs in the spam folder.

TrustedSource from McAfee

TrustedSource is incorporated into all the products across McAfee’s appliance and service suite, as well as into appliances and services of other companies and organizations.

AOL Postmaster

AOL provide a very quick and easy way to see what they consider your current reputation as a mail sender to be on the “AOL Check IP Tool”. Postmaster

Requires registration, but this is essential reading if you have a proportion of your database using or Hotmail address’

Outblaze Reputation Check

Outblaze hosts webmail services for several thousand domains, with userbases ranging from a few thousand to several million mailboxes.  Their total userbase exceeds 40 million mailboxes. The lookup tool incorporates some major blacklists including the Spamhaus SBL , Spamhaus XBL and the Spamhaus PBL

Barracuda Reputation

Barracuda Central maintains a history of IP addresses for both known spammers as well as senders with good email practices. This information contributes to the Barracuda Reputation System, which gives the Barracuda Spam & Virus Firewall the ability to block or allow a message based on the sender’s IP address. Barracuda is utilised by over 85,000 business worldwide. This includes the US Department of Homeland Security, University of Georgia, Charlotte-Mecklenburg Police Department, countless school districts and tens of thousands of smaller business and governmental organisations.

SecureCloud from Trend Micro

The SecureCloud website allows you to do a reputation check against Trend Micros “Smart Protection Network”. A variety of SME and Enterprise level business’ use this resource for gauging IP Reputation.

Sender Score

Sender Score is a free service offering from ReturnPath. It aggregates data from 60 million mailboxes at a variety of ISPs, spam filtering and security companies.  On some level Yahoo!, Windows Live Hotmail, Spam Assassin, IronPort Systems and others make use of SenderScore data. That said you can achieve good deliverability with those ISP’s and still not show on the SenderScore radar.

Still need to check the blacklists

You still need to make sure your not on any of the major blacklists and possibly clean up any listings on the smaller blacklists. To help you identify whether your listed has a tool that checks over 100 blocklists to see whether you are listed.

The founder of, Andrew Bonar currently resides not far from Sydney in Australia where he performs his primary role as Postmaster for self-service ESP Campaign Monitor

In the past two years alone Andrew has been responsible for the delivery of in excess of 120 Billion messages. With more than 15 years of industry experience, Andrew is widely recognised as a leader in the field of message sending, deliverability and compliance.

In 1996, he co-founded the UK’s oldest privately held ISP, Cheapnet Ltd. In 1998, launched the UK’s first privately held eCommerce payment systems: eBanx Ltd, and in 2003 he launched two of the very first ESP’s in Europe: MailPhoenix and eMailGenie.

From 2006 Andrew served as an independent consultant at organisations throughout Europe, the Middle East, Asia Pacific and the US. More recently serving as Worldwide Director of Deliverability at Emailvision, managing deliverability operations in 22 Countries. Andrew continues developing and evangelising best practices in permission-based marketing with clients and industry associations and travels extensively in Asia, Europe and North America to fulfil these obligations.


The continued use of this site, indicates you agree to our use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. Click below for the detailed policy in relation to cookies.

Cookie Policy for emailexpert