Level up your business with team@relayzo.com
Level up your business with team@relayzo.com
Nowadays, businesses and professional marketers a now facing an issue in bulk email marketing. As all the service providers have now implemented AI-driven spam filters that read every message, whether it is on Gmail, Outlook, or Yahoo. It directly transfers your emails to the Spam folder instead of the Inbox folder.
Do not know why it happened to your email. Your target of sending email is the recipient’s Inbox, but it lands in Spam? Fear not. Just read this blog, as we have mentioned all the reasons why all your emails land in the recipient’s Spam, not in the Inbox. Moreover, we have also mentioned the solution so all your emails can land in the recipient’s inbox for effective bulk email marketing.
You know, sometimes in email marketing, legitimate emails also go to the spam folder because of some loopholes that cause them to be flagged as spam. That’s why you need to be very precise while writing an email, whether it is an offer, a product, or service, or a new letter. If you think all your emails are perfect, but they also go to the recipient’s spam folder, then you need to verify them by considering the reasons that we have mentioned below:
If you lack proper email authentication, then you must seem to be less trustworthy. Email authentication is the only way that makes your email look legitimate rather than like spam emails. Moreover, having proper email authentication showcases your domain name as being used by the spammer and scammer who send suspicious emails.
You need to add Sender Policy Framework (SPF), DomainKeys Identified Mail (DKIM), and Domain-based Message Authentication (DMARC) authentication methods. This will help you monitor your authentication results and correct them if necessary. Moreover, these methods will help you keep up with the latest updates and policies in email security. You can also follow the sender requirements from Google and Yahoo.
You know all your outgoing emails, whether it is email marketing or transactional emails – are filtered and checked by the spam filter deployed by Internet service providers (ISPs) and email service providers (ESPs) like Gmail, Yahoo, & Microsoft Outlook. You know, using words or a combination of words that spammers and scammers mostly use are identified by these filters. The flagged email also consists of these spammy words in its body or subject line.
The first thing you must do is to avoid using all capital letters, exclamation marks, and numbers/numeric characters. As this is bad practice for writing an email, also do not add free, lowest price, and easy money words in your email – as they are common spam trigger words. Make sure that there are no grammar or spelling mistakes, and also write an email in neutral language.
Recipients would not open any type of link that seems fishy, as they think they might get hacked by opening the link. Not only that the attachments the main source of malware, but the spam filter takes a good look at those attachments, especially when they are executable files (.exe ). Apart from .exe, other types of files like ZIP files, macro-enabled Office files, and even PDFs can also contain some malware or a suspicious link that caused your email to get flagged.
You just need to run multiple scans on attachments before uploading them to make sure they are free from malware. Also, make sure to use a secure file transfer service instead of adding your file as an attachment.
Make sure that the “FROM” line contains accurate information about the email sender; if it contains misleading information, recipients might think the sender is going to trick them. That’s why the inaccurate “FROM” information could be the culprit for your email being marked as spam.
You must use a trustworthy sender name and a valid email address associated with your domain that helps you to maintain consistency of the “FROM” field across your email communications. Must follow the proper process for updating the “FROM” field information when it is necessary.
Also, monitor all your “FROM” field information, particularly when you use automated systems and third-party platforms. Make sure that the contact forms on your website use the admin address of your site in the “FROM” field instead of the addresses entered into them.
If you lack the permission to send emails to people, then the GDPR, the CAN-SPAM Act, and other rules and regulations will strictly prohibit sending unsolicited emails. Moreover, you know that unsolicited emails are more likely to be reported by the recipients, as they are a form of unwanted communication.
Also, if you have a list of email addresses that you purchased from someone and you have started using that list of addresses for sending emails will end up becoming flagged as spam. Your email not only flagged by spam filters but also by the recipients.
First of all, you need to check that all the people on your email list have given you explicit approval to send them emails and remove those who have not. You also must use an opt-in form when collecting email addresses and include a disclaimer stating that you will be using this information and how.
After that, take a step further by using a double opt-in and asking for an email address confirmation upon sign-up. Also, make unsubscribing easy and effortless. Most importantly, you need to educate team members with access to your email marketing list on laws and regulations related to email sending. Don’t hesitate to get legal advice if you have trouble understanding and complying with laws and regulations related to email sending.
Sender reputation plays an important role in email deliverability, and it includes your domain name and IP address reputation. If these metrics are not as good as it was, then in this case you might be seen as you are reputable, and all your emails will land in the recipients’ inboxes.
Engagement consists of email or link open rate, click rate, and replies. Considering these factors will help you to decide whether your email will be classified as spam email or an authentic email. The more emails that end up going to spam, the engagement of your emails drops down.
You need to segment your email list based on demographics or behaviors. Moreover, you also need to personalize emails and customize content with the recipient’s interests and preferences. Make sure that the subject lines of your emails are convincing while forcing them to respond. You need to focus on improving your email content so that it is more relevant to the recipient’s expectations. Selecting the best days and times to send your emails is very important to improve the engagement rate. For this, you need to use a list of email addresses that are active and engaged. After that, go through with A/B testing for different email elements for a better response.
If you are running an email marketing campaign that follows rules and regulations, then you should be familiar with the requirement to include an unsubscribe option in each email you send. Apart from that, you make sure that said option is easy to spot within the email. If you haven’t added it to your email, then the recipients could be left frustrated and mark the email as spam.
An email with a lack of a physical address might be a red flag and can be cused of email marked as spam. You know why a physical address is important in email, as it showcases your business location and makes you seem like more of a legitimate business.
The first thing you need to do is decide what your physical address will be, and then you can go for your street address, a post box registered with the postal service, or a private mailbox registered with an agency for receiving mail – it’s all dependent on your business setup. You must add your contact information along with your physical address so recipients can reach you in multiple ways.
Landing in the inbox instead of the spam folder is no longer just about writing a good email—it’s about building trust, maintaining a healthy sender reputation, and following the right technical practices. From authentication and permission-based outreach to smart content writing and easy opt-outs, every small step plays a big role in your email success.
If you’re struggling with email deliverability or want to avoid spam triggers altogether, Relayzo is here to help. Our platform is designed to support responsible, high-performing email marketing with built-in tools to monitor blacklists, warm up your domain, and optimize every campaign for maximum deliverability.
With Relayzo, you don’t have to guess why your emails are landing in spam—you’ll have the data, tools, and support to fix it fast.
Relayzo is a smart, reliable, and innovative solution tailored to meet all your email marketing needs. With its intuitive interface and powerful features, it helps you create, manage, and optimize campaigns effortlessly.
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