# LetterWP documentation

> Everything you need to go from install to your first sent newsletter in about 15 minutes.

https://letterwp.com/docs/

## LetterWP

https://letterwp.com/docs/letterwp/

How to install LetterWP, connect your Resend account, import your subscribers and send your first newsletter from WordPress.

- [Install LetterWP](https://letterwp.com/docs/letterwp/install/): How to install LetterWP: what you need first (WordPress 6.5+, PHP 7.4+, a domain and a Resend account), then upload the plugin zip and activate it.
- [Connect Resend](https://letterwp.com/docs/letterwp/connect-resend/): Connect LetterWP to your own Resend account: create a Full access API key, add your sending domain, check its DNS records and send a test email.
- [Import subscribers](https://letterwp.com/docs/letterwp/import-subscribers/): Import subscribers into LetterWP from Substack, beehiiv, Ghost, Mailchimp, Kit or any CSV with an email column, and review them before anything is saved.
- [Send your first post](https://letterwp.com/docs/letterwp/send-your-first-post/): Send your first newsletter with LetterWP: write a post, send a test to yourself, preview the email, then publish to email it to your subscribers.
- [Troubleshooting](https://letterwp.com/docs/letterwp/troubleshooting/): Fixes for common LetterWP problems: a rejected Resend API key, a domain that says Not ready, test emails landing in spam, and a missing DMARC record.

Last updated: 2026-10-03