Send Messages, Images, R Objects and Files to 'Slack' Channels/Users

'Slack' <> provides a service for teams to collaborate by sharing messages, images, links, files and more. Functions are provided that make it possible to interact with the 'Slack' platform 'API'. When you need to share information or data from R, rather than resort to copy/ paste in e-mails or other services like 'Skype' <>, you can use this package to send well-formatted output from multiple R objects and expressions to all teammates at the same time with little effort. You can also send images from the current graphics device, R objects, and upload files.

Project Status: Active - The project has reached a stable, usable state and is being actively developed. downloads CRAN_Status_Badge

slackr - a package to send user messages & webhook API messages to Slack channels/users

The slackr package contains functions that make it possible to interact with the Slack messaging platform. When you need to share information/data from R, rather than resort to copy/paste in e-mails or other services like Skype, you can use this package to send well-formatted output from multiple R objects and expressions to all teammates at the same time with little effort. You can also send images from the current graphics device, R objects (as R data files), and upload files.

Versions 1.4+ BREAK THINGS.

Support has been removed for the "old style" incoming web hooks (see "Setup" below for the required incoming web hook URL format).

The incoming webhook "token" is no longer required or used.


  • Version 1.4.2 fixes for changes to the Slack API causing duplicate column names and breaking functions
  • Version new slackr_msg() + many fixes and BREAKING CHANGES (see above)
  • Version Removed data.table dependency (replaced with dplyr); added access to im.list ( thx to PR from Quinn Weber
  • Version Radically changed how slackr works. Functions have camelCase and under_score versions
  • Version 1.2.3 added more parameter error cheking, remobved the need for ending ? on webhook URL and added defaults for missing setup parameters.
  • Version 1.2.2 fixed issue (bug in 1.2.1 fix)
  • Version 1.2.1 fixed issue when there are no private groups defined
  • Version 1.2 re-introduced ggslackr() (first CRAN version)
  • Version 1.1.1 fixed a bug in the new full API slackr() function
  • Version 1.1 added graphics & files capability
  • Version 1.0 released

Many thanks to:

for their contributions to the package!

The following functions are implemented:

  • slackr_setup : initialize necessary environment variables
  • slackr : send stuff to Slack
  • slackr_bot : send stuff to Slack using an incoming webhook URL
  • dev_slackr : send the graphics contents of the current device to a to Slack channel
  • ggslackr : send a ggplot object to a Slack channel (no existing device plot required, useful for scripts)
  • save_slackr : save R objects to an RData file on Slack
  • slackr_upload : upload any file to Slack
  • slackr_users : get a data frame of Slack
  • slackr_channels : get a data frame of Slack
  • slackr_groups : get a data frame of Slack groups
  • text_slackr : Send regular or preformatted messages to Slack
  • slackr_msg : Slightly different version of text_slackr()


The slackr_setup() function will try to read setup values from a ~/.slackr (you can change the default) configuration file, which may be easier and more secure than passing them in manually (plus, will allow you to have multiple slackr configs for multiple teams). The file is in Debian Control File (DCF) format since it really doesn't need to be JSON and R has a handy read.dcf() function since that's what DESCRIPTION files are coded in. Here's the basic format for the configuration file:

channel: #general
username: slackr

You can also change the default emoji icon (from the one you setup at integration creation time) with icon_emoji.


# stable/CRAN
# bleeding edge


# current verison
#> [1] '1.4.1'
# send images
qplot(mpg, wt, data=mtcars)
ggslackr(qplot(mpg, wt, data=mtcars))

Test Results

#> [1] "Wed Jul 20 14:05:11 2016"
#> testthat results ========================================================================================================
#> DONE ===================================================================================================================


slackr 1.4.2

  • Fixed bug introduced by new field names in Slack API
  • Added a file to track changes to the package.

Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.


3.2.0 by Matt Kaye, 4 months ago,

Report a bug at

Browse source code at

Authors: Bob Rudis [aut, cre] , Jay Jacobs [ctb] , David Severski [ctb] , Quinn Weber [ctb] , Konrad Karczewski [ctb] , Shinya Uryu [ctb] , Gregory Jefferis [ctb] , Ed Niles [ctb] , Rick Saporta [ctb] , Jonathan Sidi [aut, ctb] , Matt Kaye [aut, ctb] , Xinye Li [ctb] , Andrie de Vries [aut, ctb]

Documentation:   PDF Manual  

Task views: Web Technologies and Services

MIT + file LICENSE license

Imports cachem, dplyr, ggplot2, graphics, grDevices, httr, jsonlite, magrittr, memoise, methods, rlang, tibble, utils, withr

Suggests covr, knitr, rmarkdown, svglite, testthat, texPreview

Suggested by logger.

See at CRAN