How should bidders be notified of addendums?

Notifying bidders of addendums by certified mail, fax, or courier service is considered the most appropriate method because it ensures that the communication is documented and verifiable. This formal approach is critical in public procurement processes, where maintaining transparency and accountability is essential. Using these methods allows for a clear record of the communication, ensuring that all bidders receive equal information, which upholds the integrity of the bidding process.

In contrast, personal email may not guarantee that all parties receive the information in a timely manner or even receive it at all, as not all bidders may check their emails regularly or have reliable access. Phone calls lack a paper trail, making it difficult to prove that the addendum was communicated to all relevant parties. Using social media is not a formal method for official communications within the bidding process and does not provide the necessary documentation or assurance that all bidders have received the information. This could potentially lead to issues or disputes regarding bidder equity and fairness. Therefore, the use of certified mail, fax, or courier service meets the standards required for official communication in procurement.