I furnished steel and formed pool finished job middle january 2021, sent numerous times invoices to be paid. Sent prel notice to contractor and owner 3/26/21, the a notice of intent on 5/7 due to no response from preliminary notice, mailed went undelivered returned to sender and filed a mech lien 6/22 to be mailed 6/29 Are we in our rights to send They tried sending notice of intent twice