 <p>Well, sendgrid-nodejs is a more popular repository.</p> <p>However, Nodemailer is the most popular module for sending emails with NodeJS. I've been using it for months and I'm very satisfied.</p> <p>If you're worried about the future of your app you should consider that Nodemailer is used not just with Sendgrid, but with a lot of other competitors. So if you have a problem with Sendgrid, you could easily switch to another email delivery service without having to learn a different API.</p> <p>So I suggest you to use nodemailer-sendgrid-transport, and if you find bugs, fix them with a PR :P</p>