12 Miss. Code. R. 6-3.106.23.1
When utilizing the Competitive Sealed Bidding method provided herein agencies and governing authorities shall provide a secure electronic interactive system for the submittal of such bids as an additional bidding option for those bidders who choose to submit their bids electronically. No bidder shall be required to submit bids electronically. When construction bids are submitted electronically, the requirement for including a certificate of responsibility, or a statement that the bid enclosed does not exceed Fifty Thousand Dollars ($50,000.00), on the exterior of the bid envelope as indicated in Section 31-3-21(1) and (2) shall be deemed in compliance with by including same as an attachment with the electronic bid submittal.
12 Miss. Code. R. 6-3.106.23.1