Not really. From the I2P FAQ: Without protocol scrubbing or higher latency, global active adversaries can gain substantial information. As such, people concerne

Not really. From the I2P FAQ: Without protocol scrubbing or higher latency, global active adversaries can gain substantial information. As such, people concerned with these attacks could increase the latency (using nontrivial delays or batching strategies), include protocol scrubbing, or other advanced tunnel routing techniques, but these are unimplemented in I2P Bitmessage is only plausibly deniable, meaning a traffic analysis is likely to narrow down the list of senders to a few, which is good enough in a manhunt.