Sender view

Other email clients reason over messages. mxr also reasons over people. The sender view answers questions like:

Who emails me most?
Who do I reply to fastest?
Which senders have I left hanging?
Did this person ask me anything I haven’t responded to?

These questions are cheap when your archive is on disk and indexed. They’re impossible when your archive is behind a third-party API and a per-call quota.

CLI

mxr sender alice@example.com

Prints a profile:

Volume — messages over time, inbound vs outbound
Cadence — median response latency in both directions, both clock-time and business-hours
Open threads — threads where the most recent message is theirs and you haven’t replied
Open commitments — questions you’ve asked them, sorted by age
Recent activity — the last N exchanges

mxr sender alice@example.com --format json | jq .

Common workflows

Find people I owe replies to

mxr stale --mine --older-than-days 7 --format json \
  | jq -r '.threads[] | "\(.days_stale)\t\(.subject)"' \
  | head

Then run mxr sender <email> on each to confirm before triaging.

Pick the “biggest” senders interactively

mxr storage --by sender --format jsonl \
  | jq -r '"\(.size_bytes)\t\(.label // .key)"' \
  | sort -rn \
  | fzf --header='bytes | sender' \
  | awk '{print $2}' \
  | xargs mxr sender

storage ranks senders by data weight; sender opens their profile.

Daily standup: who emailed me overnight?

mxr search 'newer_than:1d' --format json \
  | jq -r 'group_by(.from)
           | map({sender: .[0].from, count: length, latest: max_by(.date).subject})
           | sort_by(-.count) | .[]
           | "\(.count)\t\(.sender)\t\(.latest)"'

TUI

Inside the TUI, open the sender profile modal for the focused message:

Ctrl-p (palette) → “Sender View”
The modal shows the same profile sections plus “Open in CLI” — copies the equivalent mxr sender ... invocation to the clipboard.

Why this matters for agents

A sender profile is the most useful single context an LLM can have when drafting a reply or evaluating a triage candidate:

mxr sender alice@example.com --format json \
  | claude -p "Based on cadence and recent threads, draft a friendly nudge if she's overdue."

The agent gets relationship shape as JSON, without needing to read every email.