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Stop emails being marked as spam

Stop emails being marked as spam

Cin7 Core generates emails to send to customers. If your organisation is using a custom domain to email customers, Cin7 Core emails can be flagged as spam by the customer's mail server and not appear in a customer's inbox.

Configure your domain's SPF record

This is resolved by adding a line to your organisation domain's SPF record. SPF is a mechanism the recipient mail server uses to verify if the Cin7 Core domain ( is allowed to send a email behalf of another domain.

You will need to add this line to the custom domain SPF record:

When this is done, the email will not be marked as spam by the recipients mail server.

Please note that although the product name has changed from DEAR to Cin7 Core, the mail server still posts from the domain - this is because this domain has built reputation with multiple mail servers and is much less likely to be marked as spam. This will eventually be updated.

Whitelist Cin7 Core IP addresses

We also recommend whitelisting the following Cin7 Core IP addresses:

  • Cin7 Core IP address:

  • Cin7 Core mail server IP address:

  • Cin7 Core front end address:

  • Integrations (for WooCommerce and Magento calls):

The whitelisting of the mail server IP address is particularly helpful in case you're not receiving any emails from Cin7 Core, which may have been dumped to your mail server's spam folder all the while. If you are unsure about how to go about whitelisting IP addresses, kindly seek your hosting provider's support.

Turn on DKIM for your domain

DKIM is a standard email authentication method that adds a digital signature to outgoing messages. Receiving mail servers that get messages signed with DKIM can verify messages actually came from the sender, and not someone impersonating the sender. DKIM also checks to make sure message contents aren’t changed after the message has been sent.

When receiving servers can verify messages are from you, your messages are less likely to be marked as spam.

With DKIM authentication, you improve the likelihood that legitimate messages are delivered to recipients’ inboxes. Receiving servers can verify messages are actually from your domain, and aren't forged. Please follow these detailed instructions for setting up and turning on DKIM for your domain.




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