Does email marketing work?

One major issue I face is crafting content that feels fresh and engaging. It’s tough to keep things interesting for subscribers over time.

I think it does if done well. I've experimented with in few products.

For us, it certainly works to improve user activation and retention

I think it does when you implement it in a right way

Email marketing is really useful to gather a community of contacts that are sensible to your topics and even convert. With a good segmentation and a good automation marketing tool, you can do great.

if you have reliable customer list - yest it would work. And do not spam them, send only the information that really matters and will encourage them