They actually send the email mentioned below
This is only a courtesy email notification that the ETA Form 9089 - Application for Permanent Employment Certification for COMPANY NAME sponsoring NAME for the full time position of ComputerXXXX (case number A-17100-XXXXX) has been reviewed by the Certifying Officer and will be certified.
A formal certification letter will be sent to you and, where applicable, to your authorized agent via U.S. mail. If an agent or attorney is listed in section E of the application, the certified ETA Form 9089 will be sent to the agent or attorney, if no agent or attorney is listed, the certification will be sent to you. Please look for this correspondence during the next few weeks.
Important Notice: This e-mail does not provide evidence of certification for support of the USCIS I-140 or any other form or program. USCIS will deny a petition that uses a copy of this e-mail rather than a certified ETA Form 9089. They will not request a duplicate based upon this e-mail.