The right time to add a new channel is when your current one is working well enough that you are not constantly fixing problems with it. If your SEO is bringing in steady traffic and you have a clear process for maintaining it, then adding email marketing or paid ads makes sense. Expanding too early means you split your attention before anything is fully working. It is better to get solid results from one channel and then grow from there. What do you think is the safest way to decide when to add a new marketing channel?