Customer.io MCP by usefulapi vs SendGrid MCP by usefulapi
Customer.io MCP by usefulapi is an MCP server published by usefulapi.io. Marketplaces we read that list it: 1 (Official MCP Registry). SendGrid MCP by usefulapi is an MCP server published by usefulapi.io. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-17. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |   Customer.io MCP by usefulapi | SendGrid MCP by usefulapi |
|---|---|---|
| Official MCP Registry | Listed Version: 1.11.1 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 1.11.1 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Customer.io MCP by usefulapi | SendGrid MCP by usefulapi |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) | 0 | 0 |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (customerio.usefulapi.io/mcp) | Remote server (sendgrid.usefulapi.io/mcp) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Not stated | Not stated |
| Repository | github.com/m190/usefulapi-mcp | github.com/m190/usefulapi-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 40 h ago, requires a key | Responded 18 h ago, requires a key |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Customer.io MCP by usefulapi
Query people, segments, campaigns, and message deliveries; send transactional email or broadcasts.
SendGrid MCP by usefulapi
Send email and read templates, marketing contacts, lists, stats, bounces and unsubscribes.
How to run each
Customer.io MCP by usefulapi As a remote MCP server
claude mcp add --transport http customerio https://customerio.usefulapi.io/mcpSendGrid MCP by usefulapi As a remote MCP server
claude mcp add --transport http sendgrid https://sendgrid.usefulapi.io/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Both endpoints responded at the last daily check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: Customer.io MCP by usefulapi · What it can do: SendGrid MCP by usefulapi · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.