Headers - If there are inconsistencies in the “from” address and “reply to” address and domains, emails will be filtered as spam.This can become a problem for small email senders who may be on a shared server. In other words, it’s guilt by association. Source - If other email messages sent from the same IP address that you use appear to be junk, your emails may be categorized that way, too.Link sources - If messages include a link to a website that is blacklisted, the messages could be caught in an email spam filter.Content - Typically one of the least common causes for pushing email messages to the junk box, certain words or phrases found within messages and subject lines can cause them to be caught in a spam filter.Although email services don’t share the exact algorithms for deciding if an email is unwanted by intended recipients, the following are some of the major reasons why email messages may be marked as junk or why rules in Gmail may result in a message automatically being blocked: Unfortunately, there are times when legitimate email messages are marked as junk, even though the subscriber wanted to receive them. Gmail’s junk mail algorithms and user-created forwarding rules are quite effective at auto filtering unsolicited email messages and unwanted junk email, and delivering them to recipients’ junk folders. How Does Gmail Determine an Email Is Spam? If you send email campaigns to an invalid email address or to prospects and customers who consistently don’t open or click your email messages, your email reputation and deliverability will suffer. Maintaining a high-quality email list is also key to getting through a spam filter. Using symbols and numbers to help spell words.Using exclamation points in the subject line.Including a link to several link different domains.Using a wide variety of font sizes (especially bigger than 12 point), styles, and colors.Furthermore, your sending reputation is also determined by a number of factors, including blacklisting, bounce rates, spam complaints, and a lack of sending IP history.Īs far as content, avoid formatting that indicates your email is spam, such as: In terms of email authentication, Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) are the major standards used by most Internet service providers (ISPs) and spam filter providers.
To help ensure webmail providers don’t report spam email for your email address and campaigns, be sure that you are using proper email authentication and that your sending Internal protocol (IP) reputation is good. However, your email sending reputation, the quality of the content of your email messages, and your subscriber engagement (e.g., open and click rates) all have a significant impact on whether your emails are caught in a spam filter. Most webmail providers use their own internal algorithms and metrics to determine a spam score and conduct email filtering. The way different spam email filters work varies. No matter the organization, many email marketing campaigns find themselves circling back to the basic questions: how does a spam email filter work and why do some email messages go straight to spam instead of the inbox? Plus, you’ll likely find these tips and tactics are useful not only for the Gmail spam filter, but also how to avoid spam filters for other web-based email services. Enjoy!Īre your email messages consistently reaching the inbox of your subscribers? Or do they often get caught by the junk filters of web-based email services, such as Google’s Gmail, and land in spam folders? If many of your subscribers are using a Gmail account - which is likely because there are more than one billion active users worldwide - we provide some key strategies to help you avoid the Gmail spam filter. Now on to the specifics of the Gmail spam filter. Testing and optimizing your email campaigns to drive higher open and click rates.Building a quality, permission-based email list.But keep in mind that many factors can impact your email deliverability and include: How can you ensure that your legitimate email messages aren’t marked as spam and make it to the inbox? In this article, we zero in on how to avoid the Gmail filter.
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