Flywheel is capable of sending DMARC compliant email because they support custom SPF and DKIM configurations that achieve DMARC alignment. Flywheel is a Wordpress Hosting Platform and is often used by Product and Operations teams. Flywheel uses Sendgrid as their backbone technology to send emails and gives you the ability to authenticate your email through Sendgrid using the Flywheel dashboard. Check out their email authentication guide here: https://getflywheel.com/wordpress-support/sending-email-on-flywheel/#authenticate-sendgrid
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://getflywheel.com/wordpress-support/sending-email-on-flywheel/#authenticate-sendgrid
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's instructions and (2) adding the required entries into your DNS. https://getflywheel.com/wordpress-support/sending-email-on-flywheel/#authenticate-sendgrid