Question: Is there an app that can help me discover new newsletters and promotions based on my interests?

LaterOn is an AI-powered newsletter aggregator and scheduler designed to declutter your inbox and provide an ad-free reading experience. It offers AI-generated summaries of long newsletters, scheduled summaries of newsletters by email, and a ChatGPT-like AI assistant for asking questions. The service also handles multilingual and mobile formatting, so it's a good all-purpose tool for overseeing your newsletter subscriptions.

Another good option is InPost. The app lets you take control of your personal email by decluttering your inbox and providing a personalized experience. You can create custom categories, get reminders for invoices and manage promotions. The app uses AI models trained on large data sets to process your email data privately and in accordance with GDPR rules.

Last, Summate offers an AI-powered information management service that delivers daily or weekly digests of summarized newsletters. It uses GPT-4 technology to summarize your subscriptions and offers flexible reading options, direct access to relevant content and the ability to share summaries. It's good for people who want to simplify their newsletter management and reduce reading time.