Mail

The yerd mail commands inspect emails captured by Yerd's built-in mail-capture SMTP server. The server runs inside the yerdd daemon, enabled by default on 127.0.0.1:2525; point an app's mailer at it and every message it sends is stored locally for inspection. The Mail Capture guide covers the model and how to wire an app up; this page is the command reference.

Captured mail is local-only

The capture server is a sink, not a relay - nothing is ever forwarded. Stored mail stays listable and clearable even when capture is disabled, so these commands work regardless of whether the listener is currently bound.

Commands

Command	Description
`yerd mail list`	List captured emails (newest first).
`yerd mail show <ID>`	Show one captured email's headers and body.
`yerd mail clear`	Delete every captured email.

yerd mail list
yerd mail show 000003
yerd mail clear

`yerd mail list`

Prints a tab-separated table of every captured email, newest first, with three columns: ID, FROM, and SUBJECT.

yerd mail list
# ID      FROM                        SUBJECT
# 000003  Example <hi@example.com>    Password Reset
# 000002  shop@acme.test              Your order shipped
# 000001  no-reply@acme.test          Welcome

The ID is a zero-padded, monotonic counter (the on-disk <id>.eml stem). Ids are never reused - not even after clear - so an id always refers to the same message for as long as it's retained.
A message with no subject is shown as (no subject).
Tabs, carriage returns, and newlines inside a header are flattened to spaces so a folded or multi-line header can't break the table.
When nothing has been captured, the command prints no captured emails.

`yerd mail show <ID>`

Shows one captured email by id. The <ID> is the value from the ID column of yerd mail list.

yerd mail show 000003
# From:    Example <hi@example.com>
# To:      you@app.test
# Subject: Password Reset
#
# Your OTP is 416063.

Output is the From:, To:, and Subject: headers, a blank line, then the message's decoded text body. The bodies are already MIME-decoded (charset and transfer-encoding handled).

Message content	What `show` prints
Has a plain-text body	The decoded text body.
HTML only (no text part)	`(HTML-only message - open it in the GUI viewer)`
Neither body	`(empty message)`

HTML bodies render in the desktop app

The CLI deliberately doesn't dump raw HTML. To read an HTML-only message - with inline images and all - open it in the Mail view of the desktop app, which renders it in a sandboxed viewer.

`yerd mail clear`

Deletes every captured email and prints ok.

yerd mail clear

This removes all stored .eml files. The id counter is not reset, so a later capture never reuses the id of a cleared message.

No per-message delete from the CLI

yerd mail clear is all-or-nothing. To remove individual messages, use the Mail view in the desktop app.

JSON output

Every command accepts the global --json flag for machine-readable output:

yerd mail list --json          # {"type":"mails","mails":[ ... ]}
yerd mail show 000003 --json   # {"type":"mail","mail":{ ... }}

yerd mail list --json prints the IPC response envelope {"type":"mails","mails":[ ... ]}, where each element of mails is one captured email's metadata (id, from, to, subject, date_epoch, read). yerd mail show <id> --json prints {"type":"mail","mail":{ ... }}, where mail is the full decoded message, including all headers and both the html_body and text_body (whichever the message carries). date_epoch is the message Date: as Unix epoch seconds, or 0 when absent/unparseable.

Mail ​

Commands ​

yerd mail list ​

yerd mail show <ID> ​

yerd mail clear ​

JSON output ​

See also ​