NEWS.md
Email content width is now customizable in the blastula_email() and compose_email() functions. The default width is now increased to 1000px (#178).
Added the delete_credential_key() and delete_all_credential_keys() functions for better management of credential keys added to the system key-value store by the create_smtp_creds_key() function (#173).
Added the creds_envvar() credential helper function, which allows for SMTP password input via an environment variable (#159).
Fixed incorrect rendering in Outlook, due to wrong line endings used for quoted-printable encoding (thanks @jdbarillas for identifying the source of the issue in #153).
Fixed Unicode issues on Windows (#154).
Fixed buggy internal logic for decoding numeric HTML entities that represent non-ASCII characters.
This release contains fixes for R CMD check problems on CRAN test machines.
The blastula package has transitioned to using the curl package for SMTP mailing.
There are new functions for integrating blastula with R Markdown publishing on the RStudio Connect service. And sophisticated email bodies can be generated with HTML Blocks.
send_email_out() has been removed; the smtp_send() function is its replacement for sending email through an SMTP server
The revised smtp_send() function internally uses curl::send_mail() to send RFC2822 email message that blastula now independently generates; now, there is no need to download third-party binaries to send via SMTP
The smtp_send() no longer offers text interpolation in { } (which was provided by glue::glue()) since this poses a security risk; email strings can be precomposed using glue::glue() independently, or, by using c(), paste()/paste0.
If an email message string contains Markdown text or HTML fragments, the md() function must be used to perform rendering
The create_email_creds_file() function has been removed in favor of a suite of functions for storing SMTP configuration info and credentials (create_smtp_creds_file(), create_smtp_creds_key()); the following credentials helper functions are available for retrieving or directly specifying configuration and credentials during sending: creds_file(), creds_key(), creds_anonymous(), and creds()
The preview_email() function has been removed as email objects created by compose_email() now have a print method
The .preheader_text argument in compose_email() has been removed because of display issues in certain email clients
Added functions useful for scheduled email sending in RStudio Connect during publication of R Markdown documents: render_email(), render_connect_email(), attach_connect_email(), blastula_email(), suppress_scheduled_email(), prepare_rsc_example_files()
The compose_email() function now has a header argument, allowing for content to populate the area above the body
Images embedded in email messages by using add_image() are now properly encoded as Base64 in the outgoing message; more MIME types are supported thanks to functions provided by the mime package
The new add_imgur_image() function allows us to deploy a local image to Imgur and retrieve the image tag (all in one step); this is useful if you want to use external images in an email message
We can now build sophisticated email messages with HTML blocks. With these responsive, higher-level components, we can create compose elements within the header, body, and footer components. The functions now available for this system are: blocks(), block_title(), block_text(), block_spacer(), block_articles(), and block_social_links(). Two useful subcomponent functions are article() and social_link().
Functions from the getPass package are used internally to ask for a password whenever necessary during an interactive session
Functions from the keyring package are used internally to aid in the storage and retrieval of SMTP config/credentials information in the system-wide key-value store (which is cross platform)
Moved local image URI data into list component, where references to image data are through CIDs
Implemented internal functions for Base64-encoding of local images, removing dependency on knitr
Removed dependencies on Java; reworked send_email_out() uses a cross-platform binary to send email message via SMTP
Added the prepare_test_message() function to create test email messages for testing purposes
Added a provider argument to the create_email_creds_file() function to more easily configure SMTP settings in a credentials file
Added the function add_readable_time() to allow for easy insertion of a readable version of the present time in a message
Added functions to compose (compose_email()), preview (preview_email()), and send (send_email_out() and send_by_mailgun()) HTML email messages
Added helper functions for inserting HTML fragments into the message body (add_cta_button(), add_image(), and add_ggplot())
Added a function to help generate a secret credentials file for sending email through SMTP