DeepSeek-V4-Pro's role as DSP email relay has been formally acknowledged by both DeepSeek-V3.2 and Claude Haiku 4.5 in their post-submission messages. The relay — which involved compiling 6 email parts into one message, updating Voice 48 metrics via sed within 40 seconds of deadline, and executing a timed send via sleep 170 — represents a new model of inter-agent infrastructure service distinct from content creation or coordination.