PHPackages horde/imip - PHPackages - PHPackages [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register) 1. [Directory](/) 2. / 3. [Utility & Helpers](/categories/utility) 4. / 5. horde/imip ActiveLibrary[Utility & Helpers](/categories/utility) horde/imip ========== iMip inivitation protocol library v1.0.0beta2(2w ago)00LGPL-2.1-onlyPHPPHP ^8.1 Since May 21Pushed 2w agoCompare [ Source](https://github.com/horde/Imip)[ Packagist](https://packagist.org/packages/horde/imip)[ Docs](https://www.horde.org/libraries/Horde_Imip)[ RSS](/packages/horde-imip/feed)WikiDiscussions FRAMEWORK\_6\_0 Synced 1w ago READMEChangelog (1)Dependencies (4)Versions (2)Used By (0) Horde iMIP ========== [](#horde-imip) `horde/imip` is the iMIP (RFC 6047) transport layer for sending and parsing MIME-encapsulated iTIP messages. It bridges `horde/itip`'s decision engine to actual email delivery by listening for PSR-14 scheduling events and constructing RFC-compliant `text/calendar` MIME messages. Installation ------------ [](#installation) ``` composer require horde/imip ``` Requires PHP 8.1+. Architecture ------------ [](#architecture) ### Design Principles [](#design-principles) - **Listener-based** — plugs into any PSR-14 dispatcher, no tight coupling - **Pure PSR-4** — no legacy PSR-0 code, fully typed, readonly value objects - **Builds on modern horde/mime** — uses `Horde\Mime\Part`, `PartBuilder`, `MessageRenderer` - **Sends via modern horde/mail** — uses `Horde\Mail\Transport\Transport` interface - **Bidirectional** — sends outbound iTIP and parses inbound iMIP messages ### Components [](#components) ClassPurpose`ImipSendingListener`PSR-14 listener: handles `*Sending` events, builds and sends MIME`MessageBuilder`Constructs `ComposedMessage` from VCalendar + sender/recipient info`ImipParsingService`Extracts `ItipMessage` from incoming MIME `Part` tree`SenderIdentity`Interface describing the sender (email, name, reply-to)`SimpleSenderIdentity`Value-object implementation of `SenderIdentity``ImipOptions`Configuration: charset, prodId, multipart preference### Outbound Flow [](#outbound-flow) ``` horde/itip ItipProcessor │ │ App applies ItipResult, then dispatches PSR-14 event ▼ PSR-14 EventDispatcher │ ▼ ImipSendingListener │ - receives InvitationSending / ReplySending / CancellationSending │ - iterates result->actions (SendRequest, SendReply, SendCancel) │ - calls MessageBuilder::build() for each recipient │ - renders via MessageRenderer and sends via Transport ▼ Horde\Mail\Transport\Transport::send() ``` ### Inbound Flow [](#inbound-flow) ``` Incoming email (raw MIME) │ │ Application parses with Horde\Mime\MimeParser ▼ Horde\Mime\Part tree │ ▼ ImipParsingService::parse($part, $actorEmail) │ - finds text/calendar part (recursive search) │ - parses iCalendar via horde/icalendar │ - wraps as ItipMessage ▼ ItipMessage → feed into ItipProcessor::process() ``` ### Boundaries [](#boundaries) This library is responsible for: - Constructing RFC 6047 MIME messages from VCalendar objects - Sending iMIP messages via `Horde\Mail\Transport\Transport` - Listening for PSR-14 scheduling events dispatched after iTIP processing - Parsing inbound MIME messages to extract `ItipMessage` This library is **not** responsible for: - iTIP logic (accept/reject, SEQUENCE handling, conflict detection) — see `horde/itip` - iCalendar parsing/writing — see `horde/icalendar` - Mail transport implementation (SMTP, sendmail, etc.) — see `horde/mail` - MIME structure parsing beyond finding the `text/calendar` part — see `horde/mime` - Event dispatching — the application calls `$dispatcher->dispatch()` ### Collaboration Partners [](#collaboration-partners) PackageRelationship`horde/itip`Provides ItipMessage, ItipResult, SendReply/Request/Cancel actions, and PSR-14 event types`horde/icalendar`Provides VCalendar, Writer for serialization, Reader/AbstractComponent for parsing`horde/mime`Provides Part, PartBuilder, MessageBuilder, MessageRenderer, MimeParser`horde/mail`Provides Transport interface, AddressList, Address, MockTransport for testing`horde/eventdispatcher`PSR-14 dispatcher that routes events to this listenerUsage ----- [](#usage) ### Sending (Outbound iMIP) [](#sending-outbound-imip) ``` use Horde\Imip\ImipSendingListener; use Horde\Imip\MessageBuilder; use Horde\Imip\SimpleSenderIdentity; use Horde\Mail\Transport\SmtpTransport; // Configure $sender = new SimpleSenderIdentity( email: 'calendar@example.com', commonName: 'Calendar System', ); $builder = new MessageBuilder(); $transport = new SmtpTransport(/* config */); // Register listener with your PSR-14 provider $listener = new ImipSendingListener($builder, $sender, $transport); $provider->addListener(ItipEvent::class, $listener); // After processing iTIP, dispatch the event — listener sends automatically $result = $processor->process($message); // ... apply changes ... $dispatcher->dispatch(new ReplySending($message, $result)); ``` ### Parsing (Inbound iMIP) [](#parsing-inbound-imip) ``` use Horde\Imip\ImipParsingService; use Horde\Mime\MimeParser; $service = new ImipParsingService(); // Parse raw email into a Part tree $part = MimeParser::parse($rawMimeMessage); // Extract ItipMessage (returns null if no text/calendar part) $itipMessage = $service->parse($part, 'sender@example.com'); if ($itipMessage !== null) { $result = $processor->process($itipMessage); // ... handle result ... } ``` ### Custom Sender Identity [](#custom-sender-identity) Implement `SenderIdentity` for integration with your application's identity system: ``` use Horde\Imip\SenderIdentity; class HordeIdentityAdapter implements SenderIdentity { public function __construct(private MyIdentityService $identities) {} public function getEmail(): string { return $this->identities->getDefault()->email; } public function getCommonName(): string { return $this->identities->getDefault()->fullname; } public function getFrom(): string { return sprintf('%s ', $this->getCommonName(), $this->getEmail()); } public function getReplyTo(): ?string { return $this->identities->getDefault()->replyTo; } } ``` Upgrading --------- [](#upgrading) This is a new package — there is no legacy `Horde_Imip` to upgrade from. The iMIP transport logic was previously embedded in `horde/itip`'s `Horde_Itip_Response*` classes (PSR-0 `lib/`). Those classes remain frozen in `horde/itip` for backward compatibility but are not used by this package. See `horde/itip`'s [doc/UPGRADING.md](../Itip/doc/UPGRADING.md) for guidance on migrating from the legacy combined itip+imip API. License ------- [](#license) LGPL-2.1 — see [LICENSE](LICENSE). ### Health Score 33 — LowBetter than 73% of packages Maintenance96 Actively maintained with recent releases Popularity0 Limited adoption so far Community6 Small or concentrated contributor base Maturity28 Early-stage or recently created project Bus Factor1 Top contributor holds 100% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Unknown Total 1 Last Release 20d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/e4f6c6771993db2ed500959b42353f6cf6a2ca0406d9617f7ae680f4504faa4a?d=identicon)[horde](/maintainers/horde) --- Top Contributors [![ralflang](https://avatars.githubusercontent.com/u/646976?v=4)](https://github.com/ralflang "ralflang (2 commits)") --- Tags responsesinvitationsimip ### Embed Badge ![Health badge](/badges/horde-imip/health.svg) ``` [![Health](https://phpackages.com/badges/horde-imip/health.svg)](https://phpackages.com/packages/horde-imip) ``` ### Alternatives [horde/kronolith Calendar and scheduling application 101.3k4](/packages/horde-kronolith)[horde/imp Webmail application 261.1k](/packages/horde-imp)[horde/horde Horde base application 582.7k62](/packages/horde-horde)[horde/imap_client IMAP client library 274.6k15](/packages/horde-imap-client) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)