I'm writing because my company has an add-in for Microsoft Outlook that I 
would like to make sure is compatible with your software.  Our product, 
RelationshipSecure, helps users stay in touch with their contacts.  It can 
send out emails to verify a contact's details are still correct or messages 
informing contacts about updates to one's own contact information.  Our 
program competes with Plaxo, GoodContacts and Corex AccuCard.  Some of our 
users have experienced difficulties getting our software to work on their 
systems because their spam blocking software was blocking messages from our 
system.  
When a user sets up RelationshipSecure for the first time, it sends a 
validation email to their computer which comes from 
server@relationshipsecure.com.  Some messages our system sends will come from 
info@relationshipsecure.com.  If the validation email is mistaken for spam, 
RelationshipSecure won't get activated.  In this case, we often get support 
requests from our users complaining that the program's not working.  In 
addition to the initial validation email, our system also sends automated 
emails to a user's system if they purchase the Professional version, to let 
them know one of their contacts opened an email, and in certain other 
situations.
If you maintain any sort of global whitelist for your software, I would like 
to request that you add our domain to it.  This will make our job of 
supporting any mutual customers we share with SpamAssassin much easier.
Thank you very much
Scott Brown
CEO
RelationshipSecure