Open-source, self-hosted email deliverability testing platform
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Oct 23, 2026 - Go
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email-deliverability
Here are 216 public repositories matching this topic...
Next generation SMTP mailer plugin for WordPress. Trusted by over 300,000 sites by WPExperts.io
wordpress email emails woocommerce smtp sendinblue gmail-api sendgrid-api mailgun-api email-deliverability
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Oct 23, 2026 - PHP
Collection of Postmark AI skills
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Sep 24, 2026
📧 Never end in spam with the world's most comprehensive email deliverability checklist
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Sep 19, 2026 - TypeScript
SALES · OUTBOUND — Own your sending infrastructure instead of renting it. Claude Code skill + playbook for self-hosted cold email.
mcp self-hosted sales-automation outbound lead-generation email-deliverability cold-email claude-code smartlead-alternative
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Aug 3, 2026 - JavaScript
Open-source Apollo alternative: cold-outreach engine that verifies every mailbox before sending. Email discovery, SMTP verification, bounce-proof delivery. Self-hosted or hosted. Free Hunter.io / Instantly / Clay alternative.
open-source nextjs self-hosted developer-tools email-verification email-finder ai-agents lead-generation email-deliverability growth-marketing cold-email cold-outreach sales-engagement outbound-sales smtp-verification b2b-lead-generation clay-alternative apollo-alternative hunter-io-alternative instantly-ai-alternative
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Sep 6, 2026 - TypeScript
Email Deliverability Management Library - Email Authentication, Reputation Monitoring, Email List Hygiene, IP Warming Tools & Unified Interface to manage all.
email email-validation email-verification email-deliverability email-authentication email-reputation email-ip-warming
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Apr 10, 2025 - Python
Open-source skills for running B2B outbound on Apollo.io, in Claude Code, Codex, or any AI chat. Built by Creatop.
mcp sales-automation outbound codex email-deliverability cold-email agent-skills claude-code apollo-io claude-skills
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Sep 29, 2026
Gmail Postmaster Tools (v2 API) as an MCP server — domains, traffic metrics & sender compliance in Claude, Cursor, and any MCP client. Bring your own Google OAuth. Zero dependencies.
google email mcp gmail compliance deliverability email-deliverability postmaster model-context-protocol mcp-server
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Jul 22, 2026 - JavaScript
Outlook.com SNDS (Smart Network Data Services) as an MCP server — OAuth sign-in, IP Data & IP Status reports in Claude, Cursor, and any MCP client. Zero dependencies.
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Jul 23, 2026 - JavaScript
Check domains for email blacklists (Spamhaus, URIBL, SURBL, ZEN, SpamCop, Barracuda) + missing SPF/DKIM/DMARC. Pure DNS, zero deps, no API keys. Ships as a Claude Code skill + standalone CLI.
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Jul 13, 2026 - JavaScript
The open-source AI SDR engine any agent can drive. MCP server, Agent Skill, CLI and REST API for finding leads, reading buying signals, writing and sending email and LinkedIn outreach, handling replies and reporting.
open-source typescript mcp sales-automation outbound ai-agents claude lead-generation email-deliverability linkedin-automation cold-email mcp-server agent-skills ai-sdr
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Oct 1, 2026 - TypeScript
Cold email deliverability scanner — 400+ spam trigger words, dual scoring (deliverability + ICP clarity), clean rewrite. Claude Code skill.
email-marketing icp email-deliverability cold-email spam-checker claude-code b2b-outreach sales-outreach
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May 14, 2026 - Shell
Deutscher Mail-Tester für Nicht-Techniker: SPF, DKIM, DMARC, Sperrlisten und Spam-Score 0 bis 10, mit Klartext-Anleitung für den eigenen Anbieter. Unbegrenzt kostenlos, Server in Deutschland.
nodejs astro spf dkim rspamd dmarc gdpr email-deliverability dsgvo email-testing mail-tester spam-checker
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Oct 24, 2026 - TypeScript
MailboxValidator CodeIgniter4 library enable users to block disposal email, detect free email and validate if an email is valid
codeigniter email-validation email-verification email-deliverability mailboxvalidator-api mailboxvalidator disposable-email-detection free-email-detection
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Dec 24, 2025 - PHP
MailboxValidator CodeIgniter library enable users to block disposal email, detect free email and validate if an email is valid
codeigniter email-validation email-verification email-deliverability mailboxvalidator-api mailboxvalidator disposable-email-detection free-email-detection
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Dec 24, 2025 - PHP
Open-source bulk email platform. Send 100K+ personalized emails via Gmail SMTP or AWS SES with tracking, analytics, smart throttling, and zero spam.
react nodejs docker open-source typescript email postgresql email-marketing self-hosted email-sender newsletter smtp aws-ses bulk-email campaign-management email-deliverability email-analytics email-tracking sendgrid-alternative mailchimp-alternative
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May 22, 2026 - TypeScript
MailboxValidator Ruby module enable users to block disposal email, detect free email and validate if an email is valid
ruby email-validation email-verification email-deliverability mailboxvalidator-api mailboxvalidator disposable-email-detection
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Dec 24, 2025 - Ruby
Test your Email Deliverability by schedule and receive email reports.
email smtp deliverability email-deliverability email-testing deliverability-tools spam-checker spam-test
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May 23, 2023 - PHP
Email-domain suppression list for progressive nonprofits — disposable services, typos, spam traps. Self-serve ActionKit import. CC0-licensed.
blocklist disposable-email cc0 actionkit email-deliverability nonprofit-tech email-suppression progressive-nonprofits
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Oct 24, 2026 - Python
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