SendPost MCP by usefulapi
REMOTE · SENDPOST.USEFULAPI.IO
Inspect SendPost delivery statistics, sending IPs, message metadata, domains, and suppressions.
Available components
Last scanned (8 hours ago)
Scores higher than 4% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Marketing and SEO
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Nov 26 −47
- Endpoint reachability: reachable → not serving MCP ▼ security
- Stability: 0.10 → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Authorization: pass → unverified ▼ security
- Schema quality: 100 → unverified ▼ functional
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- 31 Oct 26 +4
- Authorization: partial → pass ▲ security
- MCP protocol: fail → pass ▲ functional
- New prompt “audit_sending_domain_configuration” functional
- New prompt “compare_delivery_statistics” functional
- New prompt “inspect_message_metadata” functional
- New prompt “inspect_sending_ips_and_pools” functional
- New prompt “review_suppressed_recipients” functional
- MCP protocol version: 2025-06-18 → 2025-11-25 functional
- Server version: 1.2.0 → 1.4.0 functional
- Server version: 1.1.0 → 1.2.0 functional
- Server version: 1.0.2 → 1.1.0 functional
- 30 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- Server version: 1.0.1 → 1.0.2 functional
- Server version: 1.0.0 → 1.0.1 functional
- 29 Oct 26 61
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://sendpost.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of sendpost.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 302 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sendpost.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/sendpost/ |
| http (plaintext) | http://sendpost.usefulapi.io/mcp | Inconclusive | 302 | http://sendpost.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
sendpost_get_account_group_stats Get SendPost account group statistics ~83
READ (account key): Aggregate delivery and engagement counts for an existing group/tag across sub-accounts, up to 366 days.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date, YYYY-MM-DD (UTC). |
| group | string | yes | Existing message group/tag, for example transactional. |
| to | string | yes | End date, YYYY-MM-DD (UTC). |
No output schema declared.
No examples provided.
sendpost_get_account_stats Get SendPost account aggregate statistics ~66
READ (account key): Aggregate delivery and engagement counts across sub-accounts over a date range, up to 366 days.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date, YYYY-MM-DD (UTC). |
| to | string | yes | End date, YYYY-MM-DD (UTC). |
No output schema declared.
No examples provided.
sendpost_get_domain Get SendPost sending domain ~35
READ (sub-account key): Inspect a sending domain's DNS records and verification status.
| Name | Type | Req | Description |
|---|---|---|---|
| domain_id | integer | yes | – |
No output schema declared.
No examples provided.
sendpost_get_ip Get SendPost sending IP ~39
READ (account key): Inspect an existing sending IP's public address, reverse DNS and warmup state.
| Name | Type | Req | Description |
|---|---|---|---|
| ip_id | integer | yes | – |
No output schema declared.
No examples provided.
sendpost_get_ip_pool Get SendPost IP pool ~49
READ (account key): Inspect one IP pool's routing strategy, overflow settings and public IP metadata. Provider credentials and routing internals are excluded.
| Name | Type | Req | Description |
|---|---|---|---|
| ippool_id | integer | yes | – |
No output schema declared.
No examples provided.
sendpost_get_message_metadata Get SendPost message metadata ~67
READ (account key): Inspect a submitted message's ID, sender, recipient, subject, groups and routing metadata. Excludes bodies, attachments, custom headers and recipient custom fields. Large messages may exceed the 1 MiB read limit.
| Name | Type | Req | Description |
|---|---|---|---|
| message_id | string | yes | – |
No output schema declared.
No examples provided.
sendpost_get_subaccount Get SendPost sub-account ~42
READ (account key): Get a sub-account's safe metadata, labels and blocked state. Credentials are excluded.
| Name | Type | Req | Description |
|---|---|---|---|
| subaccount_id | integer | yes | – |
No output schema declared.
No examples provided.
sendpost_get_subaccount_stats Get SendPost sub-account aggregate statistics ~76
READ (account key): Aggregate delivery and engagement counts for one sub-account over a date range, up to 366 days.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date, YYYY-MM-DD (UTC). |
| subaccount_id | integer | yes | – |
| to | string | yes | End date, YYYY-MM-DD (UTC). |
No output schema declared.
No examples provided.
sendpost_list_account_stats List SendPost account daily statistics ~73
READ (account key): Daily delivery, bounce, open, click, unsubscribe and spam counts across sub-accounts. Use up to 366 days per call.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date, YYYY-MM-DD (UTC). |
| to | string | yes | End date, YYYY-MM-DD (UTC). |
No output schema declared.
No examples provided.
sendpost_list_domains List SendPost sending domains ~67
READ (sub-account key): Audit sending domains, DNS record configuration and verification failures. Does not create or verify domains.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum records, up to 100. |
| offset | integer | – | Records to skip for pagination. |
| search | string | – | – |
No output schema declared.
No examples provided.
sendpost_list_ip_pools List SendPost IP pools ~66
READ (account key): List IP pool names, routing strategy, overflow settings and safe public IP metadata.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum records, up to 100. |
| offset | integer | – | Records to skip for pagination. |
| search | string | – | – |
No output schema declared.
No examples provided.
sendpost_list_ips List SendPost sending IPs ~67
READ (account key): List sending IPs, warmup and state metadata. Does not allocate or change IPs.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum records, up to 100. |
| offset | integer | – | Records to skip for pagination. |
| search | string | – | – |
No output schema declared.
No examples provided.
sendpost_list_subaccount_stats List SendPost sub-account statistics ~77
READ (account key): Read a sub-account's delivery and engagement statistic records for a date range, up to 366 days.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date, YYYY-MM-DD (UTC). |
| subaccount_id | integer | yes | – |
| to | string | yes | End date, YYYY-MM-DD (UTC). |
No output schema declared.
No examples provided.
sendpost_list_subaccounts List SendPost sub-accounts ~67
READ (account key): List sub-accounts and safe account metadata. API keys and SMTP credentials are never returned.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum records, up to 100. |
| offset | integer | – | Records to skip for pagination. |
| search | string | – | – |
No output schema declared.
No examples provided.
sendpost_list_suppressions List SendPost suppressed recipients ~110
READ (sub-account key): Inspect suppressions and documented reasons within a date range, with pagination. Does not add or remove suppressions.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date, YYYY-MM-DD (UTC). |
| limit | integer | – | Maximum records, up to 100. |
| offset | integer | – | Records to skip for pagination. |
| search | string | – | – |
| to | string | yes | End date, YYYY-MM-DD (UTC). |
| type | string | – | – |
No output schema declared.
No examples provided.
How do I install the SendPost MCP by usefulapi server?
SendPost MCP by usefulapi is a hosted endpoint at https://sendpost.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · sendpost.usefulapi.io
claude mcp add --transport http io-usefulapi-sendpost 'https://sendpost.usefulapi.io/mcp'
What is the SendPost MCP by usefulapi server?
SendPost MCP by usefulapi is listed in the public MCP registry as io.usefulapi/sendpost. Inspect SendPost delivery statistics, sending IPs, message metadata, domains, and suppressions. This page covers its hosted endpoint (https://sendpost.usefulapi.io/mcp).
Is the SendPost MCP by usefulapi server safe to use?
SendPost MCP by usefulapi scores 18 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the SendPost MCP by usefulapi server expose?
SendPost MCP by usefulapi exposes 15 tools: sendpost_list_subaccounts, sendpost_get_subaccount, sendpost_list_ips, sendpost_get_ip, sendpost_list_ip_pools, and 10 more. Their descriptions and schemas cost roughly 984 tokens of context every time the server is loaded.
Does the SendPost MCP by usefulapi server require authentication?
Its publisher declares no required credentials for SendPost MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the SendPost MCP by usefulapi server still maintained?
SendPost MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.