Postbox Services: Email Deliverability & Security Tools
Claude connectorCommunityAsk your AI: is my domain or IP blacklisted? Run a spam test, check SPF/DKIM/DMARC, grade spoofing, trace redirects, look up domain age & W…
- Tools
- 8
exposed by this connector
Movement
From our daily snapshots over the last 30 days.
Rank by popularity
Rank by trending score
Popularity score
Trending score
In its categories
How this connector compares with others in the same category. Positions are counted within the category, not across the whole directory.
Productivity1,932nd of 2,019 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 1929 |  Owlbert from The Institute | 1,585 | — | |
| 1930 | 1,585 | — | ||
| 1931 | 1,585 | — | ||
| 1932 | Postbox Services: Email Deliverability & Security ToolsThis page | 1,585 | — | |
| 1933 |  PRAXIS | 1,585 | — | |
| 1934 | 1,585 | 596places down | ||
| 1935 | 1,585 | — |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 |  Amazon Selling Partner | 20,051,962 | — | |
| 2 | 16,163,753 | 2places up | ||
| 3 | 2,749,468 | 18places up | ||
| 4 | 1,895,581 | 172places up | ||
| 5 |  Tineo | 1,215,161 | 27places up | |
| 6 | 1,093,314 | — | ||
| 7 | 865,660 | 39places up |
Developer tools639th of 662 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 636 |  MAVENS.mcp | 1,585 | — | |
| 637 | 1,585 | — | ||
| 638 |  Offline Protocol | 1,585 | — | |
| 639 | Postbox Services: Email Deliverability & Security ToolsThis page | 1,585 | — | |
| 640 | 1,585 | — | ||
| 641 | 1,000 | — | ||
| 642 |  DataFluxor | 1,000 | — |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 | 1,093,314 | — | ||
| 2 |  Coinversa Pulse | 823,885 | — | |
| 3 |  api.wawesome.io | 476,276 | — | |
| 4 |  Search1API | 319,405 | — | |
| 5 | 234,756 | — | ||
| 6 | 217,448 | 31places down | ||
| 7 | 174,433 | — |
Data analytics1,370th of 1,421 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 1367 | 1,585 | — | ||
| 1368 | 1,585 | — | ||
| 1369 | 1,585 | — | ||
| 1370 | Postbox Services: Email Deliverability & Security ToolsThis page | 1,585 | — | |
| 1371 |  RedHub | 1,585 | — | |
| 1372 | 1,585 | — | ||
| 1373 | 1,585 | 632places down |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 | Amazon Selling Partner | 20,051,962 | — | |
| 2 | 2,749,468 | 18places up | ||
| 3 | 1,773,864 | 90places up | ||
| 4 | 1,093,314 | — | ||
| 5 | Coinversa Pulse | 823,885 | — | |
| 6 | 519,243 | 13places up | ||
| 7 | 436,492 | 1places down |
Sales and marketing930th of 955 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 927 | 1,585 | — | ||
| 928 | Owlbert from The Institute | 1,585 | — | |
| 929 | 1,585 | — | ||
| 930 | Postbox Services: Email Deliverability & Security ToolsThis page | 1,585 | — | |
| 931 | RedHub | 1,585 | — | |
| 932 | 1,585 | 632places down | ||
| 933 | 1,585 | — |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 | 16,163,753 | 2places up | ||
| 2 | 2,749,468 | 18places up | ||
| 3 | 1,093,314 | — | ||
| 4 | 865,660 | 39places up | ||
| 5 | 846,987 | — | ||
| 6 | 601,603 | — | ||
| 7 |  Moda - Slides and Designs | 495,652 | 17places up |
Claude can run real email deliverability and security checks on demand. Ask the questions people actually type (about blacklists, email spam tests, link tracing) and get answers from a live check, each with a link to the full report:
- "Is my IP blacklisted?" / "Am I on a blacklist?" - check any IP against 24 DNSBLs (Spamhaus ZEN, Barracuda, SpamCop and more).
- "Is my domain blacklisted?" - check a domain against the domain blacklists (Spamhaus DBL, SURBL, URIBL).
- "Can someone spoof my domain?" - grade spoofing / BEC exposure A-F from SPF, DKIM and DMARC.
- "Why did my email go to spam?" / "Run a spam test" - a full deliverability audit (SPF, DKIM, DMARC alignment, blacklists, reverse DNS, content) on a real message you send.
- "Why did this email bounce?" - analyze a raw .eml file's headers and content.
- "Where does this link really go?" - trace a URL through every redirect hop to its true destination, with phishing flags.
- "How old is this domain?" and "Who owns it?" - domain age and WHOIS.
Tools
- analyze_eml
- check_blacklist
- check_spoofability
- create_mailtest
- get_domain_age
- get_mailtest_result
- trace_redirect
- whois_lookup
- Made by
- Postbox Consultancy Services · Website
- Sign-in
- Not required
- Connector URL
- https://mcp.postboxservices.com/mcp
- Transport
- Streamable HTTP
- Works with
- Claude, Claude API, Claude Code, Claude Desktop
- Added
- September 28, 2026
- More info