When a user sends a modmail to a subreddit, this app replies to the modmail (visible to mods only) with a summary about the user including:
- Account age
- Account karma (sitewide and subreddit-specific)
- User flair
- If the user is flagged as NSFW
- Recent comment summary (subreddit name and comment count) in other subreddits
- The number of posts and/or comments made in your subreddit in a configurable timeframe
- Recently removed comments in the current subreddit
- Recent subreddit posts
- Toolbox usernotes or Reddit native mod notes
- The user's top posts by karma anywhere on Reddit
- The user's most recent mod log entries
Any combination of the above options can be configured. If any of them return data, then a summary will be generated.
Potential use cases:
- If a user deletes their account, you can still find details about past interactions in modmail
- Quickly get context about a user's recent removed comments and subreddit posts, saving time looking through their history
- Check for possible brigading or other negative interactions via recent interactions in other subreddits

Summaries can also be triggered manually by making a private mod note with the text !usersummary in them. This is useful in case you want to re-trigger a summary after a period of time (thanks u/Forgotten_Dog1954 for the idea)
Limitations
If a user is shadowbanned, no useful information can be shown about the user. However, the app can tell you that the user is shadowbanned (not obvious on mobile modmail).
Source Code and Licence
This app is open source. You can find the code on GitHub here.
Version History
For earlier versions, please see the full changelog.
v1.8.1
- Prevent a rare situation where a summary may send automatically in response to a later message in the conversation
v1.8.0
- Add option to include recent mod log entries in output
- Add option to include the user's top posts by karma in the output
- Add option to exclude users with configured flairs
- Add option to include the proportion of self comments (comments on a user's own post) in the output
- Prevent duplicate messages from sending due to a rare issue on the Dev Platform
- Add !usersummary command
v1.7.1
- Mitigate against duplicate actions if the Developer Platform is having issues
v1.7.0
- Add subreddit-specific karma to output. This is disabled by default but can be turned on if you wish.
v1.6.9
- Allow headers to be formatted as desired - default is bold, but also supports italics and plain text.
v1.6.8
- Fix formatting of mod notes (removed extra * character)
v1.6.7
- Add option to include a user's bio text in output
- Add option to include social links in output