Open-source, self-hosted email deliverability testing platform
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Jul 31, 2026 - Go
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email-deliverability
Here are 81 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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Jul 31, 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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Jul 22, 2026 - JavaScript
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
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
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
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
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
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
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
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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Jul 31, 2026 - Python
Connect custom email domains to your email platform: automated DNS for SPF, DKIM, DMARC, MX and return-path records, with one-click sending-domain verification for your users. White-label custom domains for ESPs, CRMs, and outreach tools — widget, REST API, and MCP server by customdomain.ai.
dns email rest-api saas smtp spf dkim dmarc deliverability custom-domain domain-verification white-label email-deliverability transactional-email mx-records custom-domains cold-email dns-automation sending-domain
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Jul 15, 2026
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
Superkabe is an email deliverability and sender reputation protection platform. We act as infrastructure armor, sitting between your enrichment data and your sending accounts to enforce safety protocols across your entire fleet.
email-marketing email-validation b2b outbound email-deliverability b2b-saas cold-email cold-outreach b2b-sales outbound-sales email-deliverability-check cold-outreach-tools
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Apr 25, 2026
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
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