COMPETITOR MONITORING FOR PLUGIN DEVELOPERS

Developer Tools Codex plugins

Follow your plugin and competitors. Review changes to their positioning, capabilities and published terms, with dated source evidence.

Explore 10,904 plugins across 14 categories.

Follow up to 10 plugins for free. Newest means first added to our catalog, not the publisher’s release date.

Developer Tools plugins 14

1–14 of 14

All words must match. Use quotes for an exact phrase.

Compare plugins by developer and category
Plugin / developerCategoryFollow
AgentMart Site CheckCiphyr Tech OÜChecks a website's public setup from the outside (HTTPS and security headers, certificate dates, SPF and DMARC, privacy, terms and contac...

Publisher capabilities · listing

Check HTTPS, headers and certificate dates Check SPF and DMARC records Find privacy, terms and contact pages Check llms.txt, robots.txt and MCP Show an earlier result by its check_id

Show in context →
3 more matching sources

Publisher keywords · listing

website-check security-headers https spf dmarc llms-txt mcp

Show in context →

Publisher description

Checks a website's public setup from the outside (HTTPS and security headers, certificate dates, SPF and DMARC, privacy, terms and contact pages, llms.txt, robots.txt and MCP) through a remote MCP server that changes nothing on the sites it checks, with no sign-in, and returns plain steps to fix…

Show in context →

Publisher full description

…such as example.com. It checks HTTPS and security headers, certificate dates, email sender records (SPF and DMARC), whether privacy, terms and contact pages can be found, and files for AI agents (llms.txt, robots.txt and MCP). Each item comes back as pass, warn, fail or not checked, with plain steps…

Show in context →
Developer ToolsVersion 1.0.1
View details →
DNS InspectorSalvatore CordianoDNS Inspector looks up the main DNS record types (A, AAAA, CNAME, MX, TXT, NS, SOA) for any domain and displays them in a clear, readable...

Publisher capabilities · listing

…tative nameservers (NS) Check IPv4 and IPv6 addresses and CNAME aliases Inspect TXT records such as SPF, DMARC and domain verification Look up subdomains and internationalized domain names (IDN) Refresh results and copy any record value with one click

Show in context →
1 more matching sources

Publisher keywords · listing

dns dns lookup dig domain mx records mail servers nameservers txt records spf dmarc ipv6 cname soa developer tools

Show in context →
Developer ToolsVersion 2.0.1
View details →
Email Domain DoctorAhmad KhodrChecks public email DNS configuration (MX, SPF, DMARC, and optional DKIM) for technical validity.

Publisher capabilities · listing

Check MX records Validate SPF configuration Inspect DMARC policies Verify DKIM selectors

Show in context →
3 more matching sources

Publisher keywords · listing

email dns spf dmarc dkim mx email-authentication mcp

Show in context →

Publisher description

Checks public email DNS configuration (MX, SPF, DMARC, and optional DKIM) for technical validity.

Show in context →

Publisher full description

…il Domain Doctor inspects the public email DNS setup of any domain. It validates MX records, checks SPF configuration and mechanism policies, parses DMARC policies and reporting addresses, and optionally inspects DKIM records when a selector is provided.

Show in context →
Developer ToolsVersion 0.1.0
View details →
Email Spam TesterSerhii TanichevCheck an email before you send it: 42 technical checks with a fix plan, the folder it lands in at different mailbox providers, and perman...

Publisher capabilities · listing

Reserve a one-hour test address Full check: SPF, DKIM, DMARC, blocklists, content Fix plan with DNS records Folder at different mailbox providers Permanent mailbox for a series of letters

Show in context →
2 more matching sources

Publisher keywords · listing

email deliverability spam spf dkim dmarc inbox placement newsletter

Show in context →

Publisher full description

…orm you normally use. Within a minute the card in the chat turns into a report: a score out of 100, SPF, DKIM and DMARC, reverse DNS, TLS, 21 blocklists, links, HTML structure, the Gmail and Yahoo bulk-sender rules, SpamAssassin and Rspamd verdicts and a ClamAV scan. The report ends with a fix plan,…

Show in context →
Developer ToolsVersion 1.0.1
View details →
mailXMailwarm Inc.Live email deliverability checks: SPF, DKIM, DMARC, BIMI, blacklists and DNS, plus SPF and DMARC record generation.

Publisher capabilities · listing

Run a full email deliverability audit in one step Check SPF, DKIM, DMARC and BIMI records Detect the DKIM selector automatically Check a domain against major email blacklists Look up MX, TXT, CNAME, PTR and full DNS records Generate SPF and DMARC records F…

Show in context →
4 more matching sources

Publisher keywords · listing

email deliverability spam junk spf dkim dmarc bimi blacklist dns gmail outlook google workspace microsoft 365

Show in context →

Publisher description

Live email deliverability checks: SPF, DKIM, DMARC, BIMI, blacklists and DNS, plus SPF and DMARC record generation.

Show in context →

Publisher full description

…fix. Ask in plain English, for example "why are my emails going to spam?", "does my domain have the SPF, DKIM and DMARC that Gmail and Yahoo require for bulk senders?" or "check DMARC for acme.com". mailX runs the checks in real time: - Full email deliverability audit in one step: SPF, DKIM, DMARC,…

Show in context →

Publisher translations · package

…uestion simplement, par exemple « pourquoi mes emails arrivent en spam ? », « mon domaine a-t-il le SPF, le DKIM et le DMARC exigés par Gmail et Yahoo pour les envois en masse ? » ou « vérifie le DMARC de acme.com ». mailX lance les vérifications en temps réel : - Audit complet de délivrabilité en u…

Show in context →
Developer ToolsVersion 1.0.1
View details →
turbopressDipalino UG (haftungsbeschränkt)Dein Webhosting bei turbopress direkt aus ChatGPT verwalten: Website-Zustand, WordPress, Domains, E-Mail, DNS, Backups und Veröffentlichen.

Publisher capabilities · listing

…WordPress aktualisieren E-Mail-Postfächer, Weiterleitungen und Aliase verwalten DNS-Einträge sowie SPF, DKIM und DMARC prüfen und setzen Rechnungen und Support-Tickets einsehen, Tickets eröffnen und beantworten Datenbanken, FTP-Zugänge und Cronjobs verwalten PHP-Version wechseln und SSL-Zertifikate…

Show in context →
Developer ToolsVersion 1.0.1
View details →
SenderKitSenderKitBuild complete messaging experiences right from your AI coding agent. Add transactional email, SMS, push, and web-push — welcome emails, ...

Publisher keywords · listing

…ternative twilio-alternative mailgun ses smtp fcm apns expo mcp email-sdk email-deliverability dkim spf dmarc sender-reputation

Show in context →
Developer ToolsVersion 1.0.1
View details →
Zovo DNS CheckerZovoCheck live DNS records and email authentication (SPF, DMARC, DKIM, MX) for a domain.

Publisher keywords · listing

dmarc checker spf record checker mx lookup check spf record dmarc check dkim checker email dns check mx record check spf lookup count dns lookup txt record lookup

Show in context →
3 more matching sources

Publisher description

Check live DNS records and email authentication (SPF, DMARC, DKIM, MX) for a domain.

Show in context →

Publisher full description

…authentication with an email DNS check that queries public resolvers through DNS-over-HTTPS for MX, SPF, DMARC, and DKIM, then returns a pass/warn/fail findings list and a CSV report. SPF is parsed into its mechanisms and the DNS lookups are counted against the RFC 7208 limit of 10, so an include ch…

Show in context →

Publisher translations · package

…-Einträge einer Domain und die E-Mail-Authentifizierung. Eine Abfrage über DNS-over-HTTPS liest MX, SPF (mit der DNS-Abfragezahl gegenüber dem Limit von 10 nach RFC 7208), DMARC (Richtlinie, Reporting, Ausrichtung) und DKIM für die angegebenen Selektoren und liefert eine Pass/Warn/Fail-Liste mit Kor…

Show in context →
Developer ToolsVersion 1.0.0
View details →
AstraVerify Domain Trust CheckAstraVerify

Publisher description

…the AI answer. Ask about any domain and it returns two scores out of 100. Email Security covers MX, SPF, DKIM and DMARC, including whether DMARC is actually enforced, and every finding comes with the exact TXT record to paste. Discoverability covers what search engines and AI crawlers can actually g…

Show in context →
Developer ToolsVersion 1.0.0
View details →
DomaineeCommon Ninja

Publisher description

…cks, DNS and TXT record lookups, WHOIS, CNAME resolution, HTTP headers, DNS propagation, redirects, SPF/DKIM/DMARC, domain age and availability, subdomain finding, reverse IP, and website status.

Show in context →
Developer ToolsVersion 1.0.0
View details →
Domain ScanCYBERACE

Publisher description

Domain Scan by CYBERACE checks a domain's email, HTTPS and DNS security, including SPF, DKIM, DMARC, TLS certificates, security headers, DNSSEC and blocklists. Get a security score, per-check findings and suggested fixes, with a temporary report link when available. No account or AP…

Show in context →
Developer ToolsVersion 1.0.0
View details →
LookupLabEveryday Software LLC

Publisher full description

…, inspect an email's syntax and domain, look up approximate IP location and network, or inspect MX, SPF, DMARC and DKIM records. Connect your LookupLab account with OAuth. The plugin does not place calls, send messages or change DNS. Carrier data does not verify a person's identity or consent. Email…

Show in context →
Developer ToolsVersion 1.0.2
View details →
Proxy Mail QAProxy Mail QA

Publisher full description

…r login codes, magic sign-in links, password resets and invites, and it can check the email itself: SPF, DKIM and DMARC, links that point at localhost, the stated expiry and how it fits on a phone. When nothing arrives, it shows what reached the address, anything refused, and the likely cause. It ca…

Show in context →
Developer ToolsVersion 1.8.0
View details →
SiteTriageSeyithan Alkan

Publisher description

…is presenting right now (including TLS 1.3), HTTP status and redirect chains, email authentication (SPF, DKIM, DMARC), and domain registration and expiry. It then returns the most likely root cause, ranked, with concrete fix steps — instead of guesses. Ideal for the deploy moment: apex-vs-www miscon…

Show in context →
Developer ToolsVersion 1.0.0
View details →