# Connect Resend (BYOK)

Part of the sendm8 docs: https://sendm8.com/docs#byok. Index for AI assistants: https://sendm8.com/llms.txt

Out of the box, notifications go through our shared sender, which sends up to 10 instant emails a day per account (the rest arrive in your daily digest). Add your own [Resend](https://resend.com) API key and every notification goes through your Resend account instead: no daily cap from us, and it comes from your own domain.

1. In Resend, go to **Domains**, add the domain you want to send from and add the DNS records it shows you. Wait until it says **Verified**.
2. Go to **API Keys → Create API Key**. Choose **Sending access** (you can limit it to that one domain) and copy the key. It starts with `re_` and Resend only shows it once.
3. In sendm8, open **[Account → Email](https://sendm8.com/app/account/email)**, paste the key and click **Save**. We check it works straight away.
4. Pick the From address, for example `forms@yourstudio.com`, then send yourself a test.

Keys are encrypted before they’re stored and are never shown in full again: you’ll only see something like `re_••••4f2a`. To remove one, delete it in sendm8, and revoke it in Resend too for good measure.

> **If your key stops working**
>
> If Resend rejects your key (it was revoked, or your Resend quota ran out), we don’t quietly switch you back to our sender. Notifications wait for your 6pm UTC digest instead, and a banner in the dashboard tells you what went wrong. Submissions are still stored, and Discord, Slack and webhooks carry on as normal.