Sailthru is capable of sending DMARC compliant email because they support custom SPF and DKIM configurations that achieve DMARC alignment. Sailthru is an Email Marketing Platform and is often used by Product and Application Development teams.
The link just below is a resource on how to configure this source to send DKIM-aligned email on your behalf. You will complete this configuration by (1) following the source's instructions and (2) adding the required entries into your DNS. You will also need to contact your Sailthru account manager. https://getstarted.sailthru.com/messaging/deliverability/configure-dns-records/
The link just below is a resource on how to configure this source to send SPF-aligned email on your behalf. You will complete this configuration by (1) following the source' instructions and (2) adding the required entries into your DNS. https://getstarted.sailthru.com/messaging/deliverability/configure-dns-records/