Undelivered emails are discovered through notifications from email delivery tools or customer feedback. Email newsletter managers especially want to aim for a 100% delivery success rate .
However, there are some reasons why emails are not delivered that can be fixed and some that cannot. In this article, we will introduce the reasons why emails are not delivered and the measures you can take. Eliminate the causes that can be fixed and bring your delivery success rate closer to 100%.
Kairos3 Marketing is an MA tool that provides strong support vp communication officer email list for marketing and sales activities.
Contents of this article
7 situations where you may be told "email not delivered"
Reasons why emails are not being delivered and solutions
The destination address for the mail distribution list does not exist
The email is being rejected by the filtering function of your email client or by filter software.
An error occurred on the receiver's side
Receiving emails is being rejected
Reasons for the misconception that "emails are not being delivered" and countermeasures
Sending domain authentication is not performed
Continuing to send to the wrong email address
Sending emails with content that could be identified as spam
You keep sending emails that go unopened
Reference: Emails are not displayed
7 situations where you may be told "email not delivered"
We are a vendor of marketing automation " Kairos3 Marketing ". Marketing automation has an email delivery function. In our work, we have heard many concerns about email marketing from our customers.
One of the most common inquiries we receive is about "emails not being delivered properly." Most of the causes of "emails not being delivered properly" can be summarized into the following seven items.
We will divide the above situations into "emails not being received" and "emails that have actually been received but are mistakenly believed not to have been received," and introduce the possible causes and solutions for each.
Reasons why emails are not being delivered and solutions
In this chapter, we will introduce the causes of email not being delivered and solutions to the problem.
Some tools can tell you the reason for delivery failure
Some email delivery tools can show you the specific reason why an email was not delivered. Check the tools your company uses.
The destination address for the mail distribution list does not exist
If the recipient's email address does not exist, the email will not be delivered. The reason for the recipient's email address not existing is one of the following:
The email manager registered the wrong email address.
The customer made a mistake when filling out the registration form .
The corresponding email address no longer exists due to the customer's resignation or transfer.
To reduce the overall number of undelivered emails, regularly review your email distribution lists and remove non-existent addresses. Some email distribution tools will notify you of non-existent email addresses.
Kairos3 Marketing's feature for finding invalid addresses
Our marketing automation tool, Kairos3 Marketing, will notify you of "undeliverable addresses" in your email distribution list. For more information about Kairos3 Marketing's email distribution feature, please see " Marketing automation: Kairos3 Marketing's email distribution feature ."
The email is being rejected by the filtering function of your email client or by filter software.
If an email is determined to be spam by the email client's filtering function or filter software, it will not reach the recipient's mailbox.
You cannot know whether the email you sent has been identified as spam by the filtering software, so you can only guess.
Mailer filtering functions and filtering software do not notify the sending or receiving servers of errors because if spammers were notified of the error, they would take measures to avoid filtering.
To prevent your company's emails from being judged as spam, it is important to set up "sender authentication." Sender authentication is a mechanism that verifies whether the domain of the email sender information is correct. There are various types of authentication, such as SPF and DKIM, to detect spoofed sender addresses.
For details on how sending domain authentication works and how to set it up, please refer to " What is sending domain authentication (SPF, DKIM, DMARC)? A beginner's guide ."
An error occurred on the receiver's side
An error on the recipient's side is detected when the recipient's SMTP server returns an error message to the sender's SMTP server, so the sender knows that the email was not delivered.
