to ( list [ str ] | str ) -- list of emails to send the email to. (templated)

subject ( str ) -- subject line for the email. (templated)

html_content ( str ) -- content of the email, html markup is allowed. (templated)

files ( list | None ) -- file names to attach in email (templated)

cc ( list [ str ] | str | None ) -- list of recipients to be added in CC field

bcc ( list [ str ] | str | None ) -- list of recipients to be added in BCC field

mime_subtype ( str ) -- MIME sub content type

mime_charset ( str ) -- character set parameter added to the Content-Type header.

custom_headers ( dict [ str , Any ] | None ) -- additional headers to add to the MIME message.