Verdict. Qualisend Email Verification MCP server and Usefulapi Emailoctopus MCP server had the same 30-day uptime in Glimind's checks (100%). Usefulapi Emailoctopus MCP server answers faster (62 vs 656 ms median). Compare readiness below.
Data as of .
| Metric | Qualisend Email Verification MCP server | Usefulapi Emailoctopus MCP server |
|---|---|---|
| Uptime, 30 days | 100% | 100% |
| Median handshake latency | 656 ms | 62 ms |
| p95 handshake latency | 2711 ms | 240 ms |
| Checks in 30 days | 4,917 | 213 |
| Outages, 90 days | 0 | 0 |
| Median recovery | — | — |
| Agent-readiness score | 96/100 (A) | 96/100 (A) |
| Tools | 12 | 13 |
| Tool-list size for an agent | ~1,951 tokens | ~2,227 tokens |
| Days observed | 29 | 28 |
Qualisend Email Verification MCP server and Usefulapi Emailoctopus MCP server had the same 30-day uptime in Glimind's checks (100%). Usefulapi Emailoctopus MCP server answers faster (62 vs 656 ms median). Compare readiness below.
Claude Code
claude mcp add --transport http qualisend-email-verification-mcp-server https://app.qualisend.com/api/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"qualisend-email-verification-mcp-server": {
"type": "http",
"url": "https://app.qualisend.com/api/mcp"
}
}
}
Claude Code
claude mcp add --transport http usefulapi-emailoctopus-mcp-server https://emailoctopus.usefulapi.io/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"usefulapi-emailoctopus-mcp-server": {
"type": "http",
"url": "https://emailoctopus.usefulapi.io/mcp"
}
}
}
Third-party servers, listed as discovered. Glimind is not affiliated with either. Figures are automated measurements from one region and may lag.