reply in the gmail conversation you mean

get the answer back into the conversation where it belongs. the bot replies in an existing gmail thread, keeps its subject and quotes the last returned message.

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

you name the recipients and can attach files. this action sends the reply; choose create email draft when you want to keep editing in gmail.

pixel art: a blue pixel bot and an orange pixel bot beside the Gmail mark on a white tile, a mailbox with a letter and two chat bubbles, on a lemon field in front of green terraced fields, one saying "reply in this thread"

reply to email thread, in plain words

keep the answer where the conversation happened. the bot finds and reads the thread before replying to the people you name. it does not choose recipients from the thread by itself.

you can add files and your gmail signature. the complete message, attachments included, must stay under 25 mb. want to keep editing in gmail? ask for a draft instead.

a routine to copy

paste this into a chat with your bot

when gmail gets a proof query from joss at linden press, read the whole thread. read the matching correction file in the linked 'approved proof corrections' drive folder. use only that file to prepare a reply. show me recipients, text and attachment here. send only after i allow it. if no matching file exists, stop and tell me. never approve proofs or add recipients yourself.

when: when matching mail arrives; gmail checks about every 15 minutes
needs: gmail read and write; google drive read only; sending on ask every time

what comes back looks like this (an example)

awaiting approval
to: joss at linden press
subject: re: cover proof
reply: please use the revised subtitle from the attached brief.
attachment: cover-corrections.pdf

good jobs for it

answer a venue coordinator with the room choice you already agreed
return the corrected brief in the supplier conversation it belongs to
reply to an introduction without keeping unrelated people on cc

before it runs

dusk bot counts Reply to email thread as a send: it reaches people or moves money, so it waits for your Allow (unless you set a daily amount, or the bot is on Full access with no sending rule, which lets it send up to 25 a day). a bot you allow only to read can never call it.

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

how to start

connect the right gmail account with read and write
set sending on your behalf to ask every time
name the sender, subject and intended recipients; ask it to read the full thread
read the reply, open the file and allow the send; then try the recurring rule

limits worth knowing

careful with Full access: a bot there with no sending rule can send up to 25 a day without asking. give it Ask every time. a daily amount you set also lets it send on its own.
subjects repeat. add the sender or date so the bot finds the right conversation.

the details it works from

input	required	what it is
`thread_id`	yes	Identifier of the Gmail thread for the reply.
`cc`	no	Carbon Copy (CC) recipients' email addresses in format '[email protected]'.
`bcc`	no	Blind Carbon Copy (BCC) recipients' email addresses in format '[email protected]'.
`is_html`	no	Indicates if `message_body` is HTML; if True, body must be valid HTML, if False, body should not contain HTML tags.
`attachment`	no	File(s) to attach to the reply.
`message_body`	no	Content of the reply message, either plain text or HTML.

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

try it in 2 minutes

set gmail sending to ask every time
find one thread by sender and subject
ask for reply text and recipients here
read the text and recipients, then allow

mistakes people make

assuming everyone on the thread gets the answer

name the recipients and inspect cc and bcc.

using a recurring job with corrections buried in chat

keep current corrections in a connected folder and name it.

questions

does it automatically reply to everyone on the thread?

you choose who gets the answer. name the recipients; the bot does not choose them from the thread. include to, cc and bcc in the preview.

can i have it leave a reply unsent?

ask for create email draft instead. the reply action sends when you allow it.

sources

dusk bot docs: files and apps
dusk bot docs: routines
dusk bot docs: a bot's computer
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].