Wix Automations works with Corvid, you just need to choose the option. Without checking the choice I think is data option and the second trigger option in choice, the Wix Automations support pages haven’t been updated yet to reflect that you can use your own coded forms.
Otherwise look at using triggered emails either to contacts or members.
https://support.wix.com/en/marketing-tools-analytics/triggered-emails
https://support.wix.com/en/article/sending-automated-response-emails-to-contacts
https://support.wix.com/en/article/corvid-tutorial-sending-a-triggered-email-to-members