> ## Documentation Index > Fetch the complete documentation index at: https://docs.open-hive.com/llms.txt > Use this file to discover all available pages before exploring further. # Draft, preview, and send a reply > Reply in an existing conversation with AI assistance, attachments, and recipient checks. Open **Inboxes**, select a mailbox, and open the conversation you want to answer. Read the full thread before composing. The runtime derives the reply's From, To, and subject from the stored conversation to preserve threading. This composer is for replying to that conversation, not composing an unrelated email to an arbitrary recipient. Screenshots show the desktop interface with fictional example data. Names, messages, counts, and connection states are illustrative, not account defaults or evidence of live activity. ## Write or improve the body Type your reply in the message body. Use blank lines to separate paragraphs. For AI assistance, enter an instruction in **Describe your message** when starting from an empty body, or **Describe your change** when revising existing text, then choose **Go**. The generated result replaces the body; **Undo** restores the previous text. The assistant can use workspace memories, which are listed when used. Review facts, promises, tone, and confidential details yourself. Generating text does not send it. Review the thread while writing an example reply. ## Add recipients and files Use **Cc** or **Bcc** to add additional recipients. Check each address, especially when copying someone into an existing conversation. Use **Attach files or images**, drag files into the composer, or paste an image. For a staged image, **Place inline** inserts it at the cursor. An image not placed inline remains an attachment. The composer limits total attachments to 20 MB; provider restrictions can be stricter. An address marked **suppressed** is on the do-not-contact list. Respect that restriction; do not try to bypass it. ## Preview before sending 1. Choose **Preview** after writing the body. 2. Check the subject, From, To, Cc, and Bcc in **Reply preview**. 3. Inspect the rendered body and signature. 4. Check the indicators for signature, quoted thread, and attached files. 5. Close the preview and correct anything that is wrong. Preview renders the proposed reply without sending it. It is separate from the experimental [colony Preview tab](/colony/preview). Preview renders the example reply and signature without sending it. ## Send once, then verify Choose **Send reply** only when ready. A successful send shows a **Sent to** notice; the reply appears in the conversation after the mailbox syncs. If it does not appear immediately, check sync status before sending again. A successful send notice is not proof that the recipient read the message. ## Resolve a blocked reply | Message or symptom | What to do | | -------------------------------- | ---------------------------------------------------------------------------------------------------------------------------- | | **Can't reply into this thread** | Read the explanation and check the account's sending capability. Do not assume every imported conversation can be continued. | | Email senders disabled | Check the relevant Developer setting and workspace availability. | | Message already answered | Reload the conversation and inspect the existing reply before retrying. | | Recipient suppressed | Respect the do-not-contact restriction; remove inappropriate additional recipients where applicable. | | Attachments unsupported | The HubSpot single-send path cannot carry them. Remove the files or use an appropriate alternative workflow. | | Reply missing after sending | Check [inbox sync](/guides/inbox); avoid an immediate duplicate send. |