Email not received - SPF & DKIM

Recently i sent an email to a person who opened a ticket and a collaborator, but the second one has no received the email. How can I check the email server logs ?
Is there a way to add Google’s SPF and DKIM signatures to the emails ?

Hello @serinformatica
We have forwarded your inquiry to the proper team and we will get back to you as soon as possible through email.