Can a slow sending server cause spam placement?

Partially True. Server speed affects delivery capability but not directly spam placement. Slow servers may time out before delivery completes, causing soft bounces. But timing does not trigger spam filtering.

Extremely slow or unreliable servers create delivery problems through failed connections. This is operational issue, not spam classification.

Ensure adequate server performance for your volume. Speed issues affect whether messages deliver at all, not whether they land in inbox versus spam.