Authenticating MailerLite Emails with SPF and DKIM

Why are my MailerLite emails going to Spam?

If you have a problem with MailerLite emails going to spam, that is, going to the junk folder of your recipients, then it is very likely an issue with your email authentication. Emails failing authentication, be they failing SPF, failing DKIM, or failing DMARC is common, as SPF, DKIM, and DMARC are often not properly implemented by domain administrators. Often, the main cause of MailerLite emails being blocked is due to the MailerLite emails failing DMARC, which in the case of MailerLite, is usually due to a misconfiguration of SPF and DKIM.

How to stop MailerLite emails going to Junk.

The first step to preventing MailerLite email going to spam is to retrieve a failed message and access its header information. This will allow you to quickly diagnose whether any authentication issues such as DKIM or DMARC are flagging your email as spam, instructing the recipient sender to move it to junk. Simply paste the email headers into our free Stellastra Deliverability Tool, which you can use freely with no log in required. Our deliverability tool should allow you to avoid MailerLite emails from going to spam, or at least rule out authentication as the issue.

How to remove ‘via mailerlite.com’ or ‘on behalf of mailerlite.com’

Another example of where a MailerLite DKIM misconfiguration is to blame, is if your recipients report seeing the message as ‘via mailerlite.com’ or ‘on behalf of mailerlite.com’ and that the emails typically end up in spam or junk. The Stellastra Email Deliverability tool above will confirm this prognosis, however, you may also wish to configure DKIM for MailerLite by logging in to your MailerLite account to check to see if you have followed the following article to configure your MailerLite dkim setup to authenticate your domain.

How to stop MailerLite Failing DMARC

To ensure that your MailerLite campaigns pass DMARC and get delivered to your prospects, it is important to ensure that DKIM and SPF passes authentication for your domain. A common mistake is to sign an email with MailerLite’s own DKIM keys. However, in order for MailerLite’s email to pass authentication for your own domain, it is necessary to use your own DKIM keys as per MailerLite’s own guide. If you wish to verify the above, paste the message headers for a failed MailerLite message into our MailerLite email testing tool. Furthermore, you should also follow the instructions on how to set up SPF authentication for MailerLite.

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