SPF
To allow Omnisend to send emails on your behalf, you will have to add them to your SPF record. The SPF mechanism used by OmniSend is shown below
include:mailgun.org
For more information please click the button below.
DKIM
You can configure DKIM support through your Omnisend email domain authentication settings. For details please click the button below.
Create a free OnDMARC account to test your configuration.