NuGet
soenneker/soenneker.resend.clientutil
An async thread-safe singleton for Resend OpenApiClient
MITSep 9, 2026 · metrics 2.10.0
All tags
Catalogue tag
#smtp
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
108 records
NuGet
soenneker/soenneker.resend.openapiclient
A Resend .NET client generated from their OpenAPI schema, updated daily
MITSep 10, 2026 · metrics 2.10.0
NuGet
soenneker/soenneker.sendgrid.client
An async thread-safe singleton for the SendGrid client
MITOct 22, 2026 · metrics 2.10.0
NuGet
soenneker/soenneker.sendgrid.contacts
A .NET typesafe implementation of SendGrid's Contact API
MITOct 22, 2026 · metrics 2.10.0
Packagist
buggregator/trap
A local debug server and utilities set for PHP projects
BSD-3-ClauseSep 18, 2026 · metrics 2.10.0
Go
croessner/nauthilus
Authentication and identity platform in Go with OIDC, SAML, MFA, LDAP, Lua, and mail integrations
GPL-3.0Oct 18, 2026 · metrics 2.10.0
npm
nikolausm/imap-mcp-server
A powerful Model Context Protocol (MCP) server for IMAP email integration with Claude
MITSep 12, 2026 · metrics 2.10.0
RubyGems
postalserver/postal
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
MITSep 16, 2026 · metrics 2.10.0
NuGet
soenneker/soenneker.extensions.messages.email
A collection of helpful EmailMessage extension methods
MITSep 9, 2026 · metrics 2.10.0
Go
chrj/smtpd
Go SMTP server library
MITOct 22, 2026 · metrics 2.10.0
npm
forwardemail/caldav-adapter
CalDAV server for Node.js and Koa. Modernized and maintained for @forwardemail
MITSep 16, 2026 · metrics 2.10.0
Maven
phax/ph-web
Java library with common web stuff
Apache-2.0Oct 20, 2026 · metrics 2.10.0
crates.io
pimalaya/himalaya
CLI to manage emails
Apache-2.0Sep 18, 2026 · metrics 2.10.0
crates.io
reacherhq/check-if-email-exists
Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
MITOct 10, 2026 · metrics 2.10.0
Go
sisimai/go-sisimai
Sisimai is a library provided as a Go package that decodes various formats of bounce emails and outputs structured data necessary for analysis, such as destination addresses and bounce reasons.
BSD-2-ClauseSep 12, 2026 · metrics 2.10.0
Go
ThomasCrouzet/icloud-mcp
stdio MCP server for iCloud Calendar (CalDAV), with optional Contacts (CardDAV) and Mail (IMAP/SMTP)
MITOct 22, 2026 · metrics 2.10.0
npm
happyvertical/sdk
No repository description published.
MITOct 20, 2026 · metrics 2.10.0
NuGet
nuuvify/Nuuvify.CommonPack
Libraries with common implementations, with separation of responsibilities between their projects using Abstractions.
MITSep 13, 2026 · metrics 2.10.0
PyPI
pytest-dev/pytest-localserver
pytest plugin to test server connections locally. This repository was migrated from Bitbucket.
MITSep 12, 2026 · metrics 2.10.0
Go · npm
dever-labs/mockly
Cross-platform multi-protocol mock server — HTTP, WebSocket, gRPC, GraphQL, TCP, Redis, SMTP, MQTT — with a web UI, scenario system, and fault injection.
MITSep 10, 2026 · metrics 2.10.0
Go
higgscli/higgs
Agent-first CLI for Proton Mail. Local AI inbox classification, search, and Q&A via Proton Mail Bridge and Ollama. Nothing leaves your machine.
Apache-2.0Sep 10, 2026 · metrics 2.10.0
RubyGems · PyPI
4commerce-technologies-AG/midi-smtp-server
The highly customizable ruby SMTP-Server and SMTP-Service library with builtin support for AUTH and SSL/STARTTLS, 8BITMIME and SMTPUTF8, IPv4 and IPv6 and additional features.
MITSep 18, 2026 · metrics 2.10.0
PyPI
bitranox/btx_lib_mail
No repository description published.
MITSep 11, 2026 · metrics 2.10.0
NuGet
danzuep/MailKitSimplified
Send and receive emails easily, fluently, with one line of code for each operation.
MITSep 13, 2026 · metrics 2.10.0
npm
gmitch215/edgeport
🛜 TCP Library for Cloudflare Workers
MITSep 24, 2026 · metrics 2.10.0
npm
opencoredev/email-sdk
One simple SDK for transactional email across 23 adapters
MITSep 15, 2026 · metrics 2.10.0
PyPI
LYZR-OSS/cloudrift
Cloud-agnostic Python SDK for extensible cloud service integrations
MITSep 30, 2026 · metrics 2.10.0
npm
TracyNgot/inboxtap.dev
No repository description published.
MITSep 16, 2026 · metrics 2.10.0
npm
haraka/haraka-net-utils
haraka network utilities
MITSep 15, 2026 · metrics 2.10.0
Packagist · PyPI
infocyph/TalkingBytes
Protocol-focused communication toolkit for PHP.
MITSep 22, 2026 · metrics 2.10.0