OptionalattachmentsAn array of files to send with the email.
OptionalbccA comma-separated list of email addresses to BCC.
OptionalccA comma-separated list of email addresses to CC.
OptionalfromThe address that the email should be sent from, which must be one of the values returned by GmailApp.getAliases().
OptionalhtmlIf set, devices capable of rendering HTML will use it instead of the required body argument; you can add an optional inlineImages field in HTML body if you have inlined images for your email.
OptionalinlineA JavaScript object containing a mapping from image key (String) to image data (BlobSource) ; this assumes that the htmlBody parameter is used and contains references to these images in the format <img src="cid:imageKey" />.
OptionalnameThe name of the sender of the email (default: the user's name).
OptionalnoTrue if the email should be sent from a generic no-reply email address to discourage recipients from responding to emails; this option is only possible for Google Workspace accounts, not Gmail users.
OptionalreplyAn email address to use as the default reply-to address (default: the user's email address).
OptionalsubjectThe subject line for the reply draft (up to 250 characters).
Options for a Gmail draft reply.