Several tools can streamline the process of competitor analysis: 1. [MailCharts](): Offers insights into competitors' email strategies, including data on send frequency and email content. 2. [Owletter](): Monitors competitors' email campaigns and provides analytics on their performance. 3. [Milled](): Allows you to browse and analyze email campaigns from various brands. 4. [SimilarWeb](): Provides website traffic insights, which can be correlated with email campaign performance.