Bring your own AI. We handle the sending.

Connect Claude, ChatGPT, Cursor or any assistant that speaks MCP to your Hollerpost workspace. It does the writing and the busy work. Hollerpost sends the email, from your domain, to people who asked for it.

What you can ask it to do

“Set up my Hollerpost account and get mail.mybusiness.com verified.” It adds your domain, tells you exactly which DNS records to put in, and checks them until they’re right.
“Write this month’s newsletter about our fall hours, for the VIP tag.” It reads your brand and voice notes, picks one of your templates, drafts it, and sends you a test.
“Add these five people from the event. They all signed the sheet.” It adds them, once you confirm they agreed.
“How did last week’s email do?” It pulls the opens, clicks, bounces and unsubscribes and tells you in plain words.

What it can’t do

I built this so an assistant can save you time without surprising you. It previews a campaign and shows you who it goes to before anything is scheduled. Your first campaign is still reviewed by a person. It can’t add anyone who didn’t agree to hear from you, and it can’t change your plan or spend money: the most it can do is hand you a link to your billing page. A new key can’t send to your list at all until you turn that on.

How to connect it

Make an API key in your dashboard under Settings, Developer API, then add our MCP server to your assistant. The MCP docs have the steps for Claude, Claude Desktop, Cursor and ChatGPT, plus every tool and what it can do.

Included on every plan

It’s included on every plan and the free trial. There’s nothing extra to pay. Emails it sends count toward your plan’s monthly sends, like any other email.

Try it free

Questions?

Email support@hollerpost.com. It comes to me, and I’ll help you get it connected.