Mergewell Mail Merge
Create personalized letters, certificates and envelopes in bulk from Excel or CSV files.
Merges data from Excel or CSV spreadsheets into PDF documents. Generates personalized letters, certificates, and envelopes with mail merge fields. Previews results before generating the final PDF to check field matching and missing data.
Try asking Muse: "Generate thank-you letters to 50 donors with their names and donation amounts merged from a spreadsheet."
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Source: Found in the official MCP Registry (io.github.theluckystrike/mail-merge) · First listed October 29, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://mail-merge.zovo.one/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Mergewell Mail Merge is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://mail-merge.zovo.one/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 249ms. Worked in n/a of checks over 30 days.
Screening · October 29, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 2
preview_mail_mergeUse this when the user wants to check a mail merge before printing: see how their spreadsheet (CSV or Excel) or list fills a letter, certificate or envelope template, which template fields like {{First Name}} have no matching column, which columns were matched by a similar name (generate_merged_documentsUse this when the user wants to mail merge from Excel or CSV to PDF: personalized letters from a spreadsheet (thank-you letters for each donor, the same letter to 200 people with their names), certificates in bulk from a name list (award, completion, participation), or envelopes Link
https://mail-merge.zovo.one/mcpQuestions about Mergewell Mail Merge in Muse
How do I connect Mergewell Mail Merge to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Mergewell Mail Merge to help me. It is a free service with an MCP server at https://mail-merge.zovo.one/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Mergewell Mail Merge working right now?
At the last check (October 29, 2026, 19:31 UTC) the endpoint was working, answering in 249ms. It is checked every 15 minutes.
Is Mergewell Mail Merge safe to connect to Muse?
It was screened on October 29, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Mergewell Mail Merge do in Muse?
It exposes 2 tools, including preview_mail_merge, generate_merged_documents. For example, you could ask Muse: "Generate thank-you letters to 50 donors with their names and donation amounts merged from a spreadsheet."
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This listing was added from public sources (Found in the official MCP Registry (io.github.theluckystrike/mail-merge)). If you build Mergewell Mail Merge, claim it to correct the details and get your badge.
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