revise a gmail draft without starting over

say "shorter" instead of rewriting the email yourself. a bot can revise a saved gmail draft's wording, subject or recipients. it updates the draft without sending it.

by the dusk bot team · checked 12 november 2026 · how we made this

every edit rebuilds the message, so attachments need adding again. ask for a proposed revision if you want to read it before the saved draft changes.

pixel art: a purple cat bot and a blue pixel bot beside the Gmail mark on a white tile, a notebook and a wrapped parcel, on a grassy meadow in front of green terraced fields, one saying "keep the attachment"

what it does

keep the proposal attached while you cut the waffle. the bot replaces the draft's message. recipients, subject and body stay as they were unless you ask to change them. files need adding again, even for a one-word edit.

have it retrieve the existing attachments first and stop if one is missing. a shorter email still needs the proposal it promises.

when you would use it

cut a long proposal. keep the pricing pdf attached while shortening the wording.
fix the introduction before sending. correct its recipient and subject on the saved draft.
use the confirmed delivery date. replace the tentative one without rewriting everything.
finish the sign-off. ask it to add your configured gmail signature.

try it

paste this into a chat with your bot

each wednesday at 3, find gmail drafts about kiln deliveries created or changed during the past week. show each recipient and subject, then propose a shorter body here. ask me before updating any draft.

keep its recipients and subject. retrieve and reattach every existing file; stop if one is unavailable. skip drafts that need no change. never send or edit unrelated drafts.

when: wednesdays at 15:00
needs: gmail read and write, limited to draft listing, updating and required file retrieval

what comes back looks like this (an example)

proposed revision for noor at willowquay ceramics

subject: kiln delivery
body: delivery is confirmed for thursday. handling notes attached.
file to keep: kiln-handling.pdf

read this version before it replaces the saved draft.

set it up

allow draft edits. connect gmail with read and write, restricted to the needed actions.
find the saved message. list drafts with full details, including recipient, subject and files.
ask for the revision first. say which parts stay, and require every attachment again.
open the saved result in gmail. look at the recipients and attachments, then try recurring edits. pause if it picks the wrong draft.

what it needs from you

input	required	what it is
`draft_id`	yes	The ID of the draft to update.
`cc`	no	Carbon Copy (CC) recipients' email addresses.
`bcc`	no	Blind Carbon Copy (BCC) recipients' email addresses.
`body`	no	Email body content (plain text or HTML); is_html must be True if HTML.
`is_html`	no	Set to True if body is already formatted HTML.
`subject`	no	Email subject line.

from composio's catalog for Gmail (action GMAIL_UPDATE_DRAFT, read 12 november 2026⁴). your bot fills these in from what you tell it.

how dusk bot handles it

dusk bot counts Update draft as a change: it alters something in Gmail, and the sending setting does not cover it. a bot you allow only to read can never call it.

the permissions Gmail asks for to run it: https://mail.google.com/, gmail.modify, gmail.compose.

where it stops

the files must go back in. keeping the recipient or subject does not preserve attachments.
show everyone on the email. ask for the full recipient list after the edit, including copies.

what it looks like

invented draft, with a made-up sender and customer

before

noor writes to willowquay ceramics: please see the attached delivery notes. i am writing to confirm that the delivery date is thursday.
file: delivery-notes.pdf

after the bot

proposed body: delivery is confirmed for thursday. notes attached.

same recipients and subject. delivery-notes.pdf added again. ready to read in gmail.

an illustration with made-up names and numbers.

try it in 2 minutes

choose one saved draft with an attachment
ask for a shorter version, without saving
require the same recipient, subject and files
allow the edit, then inspect the attachment

mistakes people make

checking only the new wording

open the attachments too. replacing a draft does not keep them automatically.

editing the same old proposal every week

review new or changed drafts. skip anything that needs no revision.

questions

will old attachments survive a wording change?

only if the bot adds them again. tell it to stop if a file is missing.

can it change the draft without asking?

yes, if you allow draft updates. put a review step in the request; draft edits do not ask automatically.

sources

dusk bot docs: files and apps
dusk bot docs: routines
dusk bot docs: computer permissions
composio, Gmail toolkit (catalog version 20261105_00), checked 12 november 2026

drafted with ai help from the dusk bot docs and the sources listed on this page, then checked against them. if something here is wrong or out of date, write to [email protected].