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The likes of outlooks spam filter etc.<br />
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The reason Im asking is an invite was sent to twenty friends with no subject, and later forwarded to a few more with fw: on it.<br />
Before saking it to be resent with a subject I thought Id ask am I right in my thinking? &nbsp;If it makes no odds I was say nothing. <br />
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The likes of outlooks spam filter etc.

The reason Im asking is an invite was sent to twenty friends with no subject, and later forwarded to a few more with fw: on it.
Before saking it to be resent with a subject I thought Id ask am I right in my thinking?  If it makes no odds I was say nothing. 



Do emails with no subject or fw: as a subject have a higher chance of ending up in a spam filter?

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.

AntiSpam

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.

Email Clients

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.