An increase in unsubscribes can be triggered by various factors. One common reason is the frequency of emails. Sending too many emails can overwhelm your subscribers, leading them to hit the unsubscribe button. Another contributing factor is the relevance of your content. If your emails are not providing value or are not relevant to the interests of your subscribers, they are more likely to unsubscribe. Additionally, poor email design and [spammy subject lines]() can also drive people away.