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Why Emails Go to Spam

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Emails are a primary source of communication for both businesses and individuals. The importance and utility of this technology cannot be understated. Yet, there is one issue that plagues many users: why do some emails go to spam? This article explores this question in detail, providing an examination of both the sending and receiving sides of electronic mail in order to reveal why certain emails end up in the spam folder.

Sender’s Role

The sender is one of the most important aspects of why emails sometimes go to spam. Poorly written electronic mails can contain keywords and phrases that are often identified as spam by email servers. Additionally, certain features of an email, such as an abundance of HTML and images, can also be flagged as potential spam.

To ensure that electronic mails are delivered correctly, the sender should follow the best practices outlined by the major email providers. This includes writing subject lines that are both concise and relevant to the content of the email. Furthermore, they should create their content to be both succinct and informative – avoiding large chunks of text.

Finally, the sender should ensure that their emails contain only relevant links, which are directed to trusted sources. The presence of third-party links that are unrelated to the email’s content can result in the email being delivered to spam

Receiver’s Role

To understand why emails go to spam, it is necessary to examine the role of the receiver. When an email is received, the mail server looks through the message to determine whether it is a legitimate email or potentially spam. To identify this, the mailbox looks for several common features within the email. This includes identifying the sender’s IP address, as well as any words or phrases that are common in spam emails. For example, use of all caps, repeated words and phrases, and requests for money can all cause emails to be sent to spam.

To ensure that emails arrive in the recipient’s inbox, the sender should whitelist the email address of the recipient. This is a process that allows the mail server to recognize the sender’s address as safe. Additionally, the mail server looks at the delivery rate of a message. If too many messages are sent too quickly, then this can also result in emails going to spam.

To avoid this, the sender should send emails in a consistent fashion to avoid being flagged as a spammer. Additionally, they should ensure that their messages are both well written and relevant to the readers.

Spam Filters

 Another factor in determining why emails go to spam is the use of spam filters. Spam filters are algorithms used by email servers to identify malicious emails. These filters examine all incoming emails using various criteria, such as the sender’s IP address and the presence of known keywords. If these filters determine that an email matches certain parameters, then it will be directed to the spam folder.

To reduce the chances of an email being directed to spam, the sender should ensure that their emails do not contain certain content that may trigger a filter. Word choice is important in this respect, as common terms associated with spam should be avoided. Additionally, the sender should ensure that their emails do not contain HTML or images that may be detected as malicious.


In conclusion, emails can sometimes find their way to the spam folder of a recipient due to various factors. Poorly written emails can contain keywords and phrases that are associated with spam, while certain features of an email can also be identified as potential spam.

The sender should ensure that their message is well written and relevant to the recipient, while also taking steps such as whitelisting and maintaining a consistent delivery rate to improve deliverability. Furthermore, they should ensure that their emails do not contain content that may trigger certain spam filters. By adhering to these best practices, senders can reduce the chances of their emails being sent to the spam folder.

About Apoorva: 

Apoorva is a technology services company that assists software products with ideation, developing prototypes, programming, creating a digital marketing presence and accelerating sales through direct contact. Over 150 for-profit and non-profit organizations, such as Xcel Energy, PeopleCare Health Services, Frontier Airlines and Centers for Spiritual Living have trusted Apoorva to build software. 

Apoorva was founded in 2001, has more than 50 employees, and uses proprietary and proven methodologies to bring technology products to the market. Contact us / Visit for more information.

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