Oh, I think that the mailbox access a process has can wont block unless its full, in which case the message will be dropped. I think you can check message_queu

Oh, I think that the mailbox access a process has can wont block unless its full, in which case the message will be dropped. I think you can check message_queue_len using erlang:process_info/2 to find the mailbox size and simply back off, or fail noisly.