Maildrop
mail service
Maildrop is a Mail delivery agent used by the Courier Mail Server. The maildrop Mail Delivery Agent (MDA) also includes filtering functionality.
Maildrop receives mail via stdin and delivers in both Maildir and mbox formats.
Features
Maildrop can optionally read filtering configuration from a file to determine whether the message is delivered to an alternate mailbox or forwarded. The structured filtering language is robust enough to allow maildrop to work with virtual mailboxes. If the filtering configuration contains syntax errors maildrop does not deliver the message but the message is not lost.
Maildrop can run in different modes, depending on the calling environment. Delivery mode is the "normal" mail filtering mode; that is, during final delivery, after the message left the SMTP environment. However, maildrop can also run in embedded mode; that is, during an SMTP transaction. Running in embedded mode allows a filter to reject a message before the server accepts it for local delivery.
“Maildrop” enters the record as mail service. Crown Archives preserves that source wording while asking what Maildrop, mail and service can confirm, complicate or overturn.
Why this record matters
“Maildrop” is worth following because a concise public description often conceals a longer documentary argument. Here, Maildrop, mail and service provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 11, 2026. The linked authority identifier is Q1885437. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Maildrop”, its source revision and the description used here.
- Expand the search: follow Maildrop primary sources, Maildrop archive and Maildrop research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Maildrop”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Maildrop” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.