Templates by Email Monster - Hundreds of free, responsive email templates. Pick and edit.

Pramp for Product Managers - Practice product management mock interviews with other PMs

MJML - The open source framework for responsive emails

The PM Interview - Practice PM Interview Questions (w/ timer).

Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.

Speechapp - The simplest way to practice for your next job interview