Once a message reaches the Mailjet servers, it is processed and relayed to our outgoing servers for sending. Our servers then communicate with the "outside world" (Gmail, Hotmail, etc) and the message is sent.
An email that is “sent” means we are attempting to deliver it and waiting for an update from the destination server. An update can take a couple seconds to a few hours.
If a large number of messages stay as “sent” for a longer period of time, a deliverability issue could be the cause. Please check our FAQ for more details on why this is happening and what you can do about it.
If an email has the “delivered” status it means that it was successfully sent and accepted by the recipient server.
The number of delivered emails matches the total number of sent emails minus the errors of delivery (see “Bounced” & “Blocked” below). Therefore, the quality of your contact list is the key!
Being “delivered” does not necessarily mean the email will be “delivered to the recipient’s inbox”. It is impossible for anyone but the recipient to know if the message was delivered to their inbox or the junk folder.
The Stats page, along with open & click tracking, can provide insightful information on your email placement and deliverability.
The Open Rate is the percentage of unique ‘opens’ based on the total number of emails delivered.
To enable ‘open tracking’, please go to your Account Preferences page. Once activated, an invisible tracking pixel (image) is added to each email you send via Mailjet. When the recipient’s email client loads this tracking pixel, the email is considered ‘opened’.
The Open Rate is a good indicator of how many people read your email, it is not however a precise measurement. Please keep in mind that:
- The recipient’s email client must be able to accept & read your HTML emails;
- The recipient’s email client must be able to display images;
The Click Rate accounts for successfully delivered emails with at least one click (excluding those clicks where an unsubscribe occurs).
To activate click tracking, go to your Account Preferences and set ‘Track Links’ to “yes”. Once enabled, each link in your email receives a unique identifier that records data on when a link is clicked, by whom, from where, when, etc. which can be found on the Stats page.
The Click Rate is a very powerful indicator as it provides insight into how recipients interact with your specific content. High click rates are generally a sign of interest and can help shape your future campaigns. Moreover, regardless of how a recipient views the emails, a click will always be detected.
The Unsubscribe Rate is related to the number of delivered emails, and indicates the number of people who opted out of your list using the unsubscribe link.
As per the Mailjet Sending Policy, an unsubscribe link is mandatory for all marketing campaigns.
Emails reported as "Spam"
The percentage of emails reported as Spam is based on the total number of emails delivered.
Spam complaints are made when the recipient believes an email is unsolicited. Spam is typically aimed at marketing emails; whereas transactional emails usually do not warrant spam complaints.
Reporting an email as Spam is an action that is taken by the recipient upon receiving your email. This is not to be confused with emails that have been delivered to the spam folder by the ISP; this is not considered a spam complaint.
Many ISPs provide a ‘this is spam’ button or link to each email they deliver. When a recipient clicks this button, the email is reported as Spam and is displayed on your Stats page.
However, sometimes the recipient may contact their ISP, the sending ESP, or a 3rd party Anti-Spam Organization to lodge a spam complaint. These complaints are taken very seriously.
Spam complaints can be detrimental to your reputation and should be well under the statistical thresholds outlined in the Mailjet Sending Policy. Otherwise your account may be temporarily or permanently suspended.
The Mailjet Sending Policy also provides the rules that need to be observed to keep your spam rates down; here is a quick summary:
- Emails can only to be sent to recipients who have given explicit consent. Use of 3rd party lists is prohibited.
- An unsubscribe link must be included in every marketing email. The link needs to be clearly visible and easy to use. Otherwise your recipients may report your email as spam to stop receiving them.
- Your sender name and domain must be communicated in every message. Your content should relevant and reflect what your subscribers are expecting. Regular maintenance of your contact lists will ensure your emails are being sent to engaged readers.
The Bounce Rate is based on the total number of sent emails.
An email is declared as a “bounce” when it cannot be delivered to the recipient, and is returned with an error message.
There are two types of bounces and Mailjet handles each type differently:
- Soft Bounce: This is a temporary issue such as the recipient’s inbox is full or a connection timeout. Mailjet will automatically attempt to resend the email. If the email is not delivered after 3 days, it is marked as a bounce.
- Hard Bounce: This is a permanent delivery error caused by an invalid email address (e.g. a mistyped email, a non-existent destination server). Hard bounces negatively impact your sender reputations and are automatically blocked by Mailjet.
Although Mailjet will handle bounce emails, it is important to regularly remove bounced email addresses from your contact lists to avoid deliverability issues. You may wish to read the FAQ: How to maintain a list of responsive contacts.
Emails "Blocked" and "Pre-Blocked" by Mailjet
One of Mailjet’s strengths is that it can anticipate certain deliverability problems and “block” an email from being sent when it has no chance of reaching the recipient’s inbox. This avoids causing an error on the recipient’s server that would negatively hurt your sender reputation.
To decide if an email should be blocked, Mailjet’s system examines several parameters including your sending history. Examples of why an email can be blocked include:
- A recipient reported your email as Spam;
- An email address that has already hard bounced;
- An email that would have been classified as Spam based on its content. Before your campaigns are sent, our system scans the campaign using an anti-spam software to check for any potential ‘spam’ related triggers or issues. (e.g. ALL CAPS, poor text/image ratio, spammy words).
To check why an email was blocked, go to the Stats page and click on the subject line of a blocked email. The “details” column will show the reason of the block. If your email was “spam preblocked”, this means your email would have been classified as Spam by the recipient server. Please check our FAQ on how to improve the deliverability of your email.
Note: If you are using Mailjet as an SMTP relay, you can avoid sending duplicates emails to the same recipient with our custom email headers. Any duplicates will be automatically blocked by Mailjet.