Spam filters always use several criteria in determining and evaluating emails entering the user's inbox. These criteria may vary between users. After examining several criteria, the spam filter will determine the spam score of the email. This score determines whether the sent email can be delivered or pass the filter or not. This score varies widely, depending on several factors.
Although not all spam filters have the same algorithm for determining the spam score of an email, there are at least some basic factors that spam filters often look for.
In this article, you will find out what spam filters detect or look for to determine a spam score.
Email Domain
If you want to use a free email domain such as Gmail, ymail, outlook, and the like, we do not recommend using a free email domain. This is because spam filters will be more aggressive in filtering free email domains. Unlike verified email domains.
If you already have an email domain, then before sending emails, it is highly recommended to perform email sender domain authentication. This ensures that the email domain you register to send emails can be recognized and verified by the server.
For those of you who just have an email domain, it is recommended to perform domain warming up. Here’s what you need to know about domain warming up:
To build domain reputation.
Ask your subscribers to mark the emails sent to the spam folder as not spam.
It takes at least 30 days for the domain reputation to improve.
So how do you perform domain warming up? Click here to perform domain warming up.
IP Address
Some spam filters will mark your email if someone with the same IP address sends spam emails. Even if it's not you. Also, if your IP address has been used to send spam emails, and you are using MTARGET, the emails you send using the MTARGET server could affect the email deliverability for other MTARGET users as well. So, make sure your IP address has never been misused to send potential spam emails.
Email Content
The content of the email you send must match what you offer. Some email service providers (ESP) have very aggressive spam filters in marking spam emails based on certain content. If you are unsure whether the email you send will go to the spam folder or not, you can try creating an A/B test email to test which email affects delivery.
Unsubscribe
No matter how important the email you send, never forget to always include an unsubscribe link. This is very important because if you don't include it, the email could be reported as spam. Or if the subscriber wants to unsubscribe from you, then carry out the unsubscribe process. But it would be better if the email already includes an unsubscribe link.
Domain Reputation
Free email domains, such as Gmail, are often filtered more strictly than verified email domains. However, this does not mean that personal domains will pass more easily. It takes time to develop a good sending reputation. It would be risky if you just got a domain, and then send a large number of emails massively. If this is your first time sending emails using your domain, then Domain Warming Up is required first. Read here.
We recommend that you ask your email subscribers to whitelist your email. The Whitelist Email guide can be read here.
FAQ
Q: Why can my MTARGET account be detected as performing spam act when sending emails?
A: This can happen if you often send large quantities of emails. Even though email sending is limited by the email quota, you are also not allowed to send large quantities of emails within a short period. If you receive a Spam Act notification, contact us and we will help you.