We just launched two new tools for newsletter creators 🚀

A few days after launching NewsletterStack, we’ve shipped two new tools to make newsletter building a little easier:

1. Email Authentication Checker – Verify your SPF, DKIM, and DMARC records to ensure your newsletters reach inboxes.

2. Newsletter Cost Calculator – Compare platform costs like Beehiiv, Substack, Kit, Ghost, and more based on your audience size.

Both tools are completely free to use.

Check them out at: https://www.newsletterstack.co/