If your email program is blocking emails from a certain sender, what is the best option?

Adding the sender to a whitelist is the best option when your email program is blocking emails from that specific sender. A whitelist is a list of approved senders whose emails are allowed to bypass the spam filter or any other blocking mechanisms. By placing the sender on this list, you ensure that their emails will be delivered directly to your inbox in the future, improving communication without any further interruptions.

Replying directly to the sender could be ineffective, as it does not resolve the issue of the emails being blocked. It may not even guarantee that your message will reach them if their emails continue to be filtered out. Marking the emails as spam is also not beneficial in this scenario, as it indicates that you do not wish to receive correspondence from that sender at all, effectively reinforcing the blocking mechanism. Ignoring the emails would simply allow the issue to persist, leading to potential missed communications or important information. Therefore, whitelisting is the most appropriate action to take in this context.