Open-source, self-hosted email deliverability testing platform
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Jun 25, 2026 - Go
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email-deliverability
Here are 60 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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Jun 24, 2026 - PHP
Collection of Postmark AI skills
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Feb 28, 2026
📧 Never end in spam with the world's most comprehensive email deliverability checklist
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May 10, 2024 - TypeScript
Build your own self-hosted cold email infrastructure — the open-source alternative to Smartlead/Instantly. Claude Code skill + full playbook.
mcp self-hosted sales-automation outbound lead-generation email-deliverability cold-email claude-code smartlead-alternative
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Jun 1, 2026 - JavaScript
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
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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Jun 14, 2026 - JavaScript
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
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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Jun 14, 2026 - JavaScript
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
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 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
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
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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Jun 26, 2026 - Python
MailboxValidator VB.Net library enable users to block disposal email, detect free email and validate if an email is valid
email-validation visualbasic email-verification email-deliverability smtp-validation mailboxvalidator-api mailboxvalidator
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Dec 24, 2025 - Visual Basic .NET
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
A powerful IP Blacklist Remover and Checker tool by ApexSofteck that helps developers and system administrators detect blacklisted IPs, monitor reputation, and automate removal from DNSBL/RBL services to ensure secure communication and better email deliverability.
email-marketing spam-protection network-security dev-tools ip-reputation email-deliverability dns-blacklist server-security automation-tool cybersecurity-tools rbl-checker blacklist-checker ip-blacklist-remover smtp-security apexsofteck ip-cleanup
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Apr 9, 2026 - Python
Free DNS pre-flight checker — audit SPF, DKIM, DMARC before your email breaks
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Jun 21, 2026 - HTML
Free SMTP Relay for developers — send emails from any app, script or device. Zero cost. Zero limits.
nodejs python php docker-compose email mailer swiftmailer smtp developer-tools smtp-server relay-server email-api smtp-mail sendmail-smtp smtp-relay email-deliverability smtp-mailer transactional-email smtp-relay-server free-smtp
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Apr 1, 2026 - PHP
Laravel package to verify IPs against trusted DNSBL/RBL services, helping detect blacklisted sending servers and improve email deliverability.
laravel email-marketing dnsbl-checker ip-reputation email-deliverability blacklisted-ips blacklist-check rbl-checker
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Jun 22, 2026 - PHP
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