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How to stop SMTP2GO emails going to junk

Last modified on Wednesday, May 8, 2024

3 minute read

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Authenticating SMTP2GO Emails with SPF and DKIM

Why are my SMTP2GO emails going to Spam?

If you have a problem with SMTP2GO 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 SMTP2GO emails being blocked is due to the SMTP2GO emails failing DMARC, which in the case of SMTP2GO, is usually due to a misconfiguration of SPF and DKIM.

How to stop SMTP2GO emails going to Junk.

The first step to preventing SMTP2GO 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 SMTP2GO emails from going to spam, or at least rule out authentication as the issue.

How to remove 'via smtp2go.com' or 'on behalf of smtp2go.com'

Another example of where a SMTP2GO DKIM misconfiguration is to blame, is if your recipients report seeing the message as 'via smtp2go.com' or 'on behalf of smtp2go.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 SMTP2GO by logging in to your SMTP2GO account to check to see if you have followed the following article to configure your SMTP2GO dkim setup to authenticate your domain.

How to stop SMTP2GO Failing DMARC

To ensure that your SMTP2GO 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 SMTP2GO's own DKIM keys. However, in order for SMTP2GO's email to pass authentication for your own domain, it is necessary to use your own DKIM keys as per SMTP2GO's own guide. If you wish to verify the above, paste the message headers for a failed SMTP2GO message into our SMTP2GO email testing tool. Furthermore, you should also follow the instructions on how to set up SPF authentication for SMTP2GO.

How can I gain visibility over who is sending with my domain?

Stellastra's email deliverability visibility tool takes reports from all modern inbox providers including Google (Gmail), Microsoft (Outlook), Mimecast, and Zoho to show who is sending email using your domain. This ensures that 1) you are monitoring your outbound emails to diagnose why emails are going to spam, and 2) that you take steps to lock down your domain, become secure, and comply with Google and Yahoo's 2024 bulk email sending policies.

How can I ensure I am compliant with Yahoo and Google's 2024 Email Sending DMARC Guidelines?

Our email deliverability visibility tool will indicate whether you are compliant with Google and Yahoo's February 2024 email guidelines for bulk senders. Google sends us reports alongside all modern email inbox providers.

Brittani Guerra, Marketing Executive, UK Cyber Cluster Collaboration - Stellastra was a massive help and took minutes fixing an email issue that we thought would be extremely time consuming. Stellastra was a hub of knowledge and we couldn't recommend them enough!

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