iContact is capable of sending DMARC compliant email because they support custom DKIM configurations that achieve DMARC alignment. iContact is an Email Marketing Platform and is often used by Marketing and Product teams. Check out their email authentication best practices guide here: https://kb.icontact.com/hc/en-us/articles/360025667951-DKIM-SPF-and-DMARC-Information
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. https://kb.icontact.com/hc/en-us/articles/360057099892