The Scenario
You are an account manager at an agency with 10 active client projects in Basecamp. It is Friday at 3 PM and your weekly update routine starts now.
Your Google Sheet has 10 rows: column A is the Basecamp project ID, column B is the message subject, column C is the HTML body for each client's weekly update. The content is approved. It just needs to be posted.
The bad version of every Friday:
- You open the first client's Basecamp project, go to the message board, click "New Message"
- You paste the subject, paste the body, check formatting, post it
- You go to the second project
- On client 6, you accidentally post the wrong client's update to the wrong board because you had two browser tabs open
- You delete it and re-post
- By the time all 10 updates are posted, it is past 4:30 PM and the weekend is gone.
The fast version is one prompt.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your spreadsheet that reads your update sheet and posts one message to each project's message board, without you opening a single Basecamp project.
Open the SheetXAI sidebar and type:
For each row in my sheet, column A is the Basecamp project ID, column B is the message subject, column C is the HTML body. Post a message to that project's message board for every row.
SheetXAI posts one message per row, to the right project, with the right subject and body, and writes the message URL back to column D.
What You Get
10 messages posted to 10 Basecamp project message boards:
- Each message posted to the right project — no cross-posting, no tab confusion
- Subject and body set correctly — from columns B and C
- Message URL written to column D — so you have a link to each post without hunting through Basecamp
The clients log into their projects and see the update. You spent two minutes on it, not ninety.
What If the Data Is Not Quite Ready
Weekly update sheets from agencies have messy histories.
When the message body needs to be generated from bullet notes
Column C has three-word bullet notes, not formatted HTML. You want polished paragraphs in Basecamp.
For each row, read the bullet notes in column C and write a formatted weekly update message in two paragraphs: the first covering progress, the second covering next steps. Then post the formatted message to the project's message board using the project ID in column A and the subject in column B. Write the posted message URL to column D.
When some clients get a different update format
Five clients are on retainer and get a standard update. Three are on project-based billing and get a milestone-focused update. Two are in offboarding and get a wrap-up note.
For each row, read column D (client type). If it says "retainer," use the standard format. If it says "project," lead with milestone status. If it says "offboarding," write a wrap-up tone. Then post the formatted message to the project board using the project ID in column A and subject in column B. Write the URL to column E.
When you want to send the same message to multiple project boards
One campaign brief message needs to go to the main client project and two sub-project boards.
For each row in the MultiPost tab: column A has a comma-separated list of project IDs, column B has the subject, column C has the HTML body. Post the same message to each project ID listed in column A. Write all posted message URLs to column D for that row.
When the update needs to pull live data before posting
The progress numbers in column C are placeholders. You want to pull actual completion stats from Basecamp's to-do lists first and insert them before posting.
For each row, read the project ID in column A. Fetch the completion percentage of all to-do lists in that project from Basecamp. Insert the completion percentage into the message body in column C where it says "[COMPLETION]." Then post the updated message to the project's message board. Write the URL to column D.
The pattern: ten projects, one prompt, no tab-switching, no cross-posting.
Try It
Get the 7-day free trial of SheetXAI and open your weekly update sheet, then ask it to post to every Basecamp project board in one go. The Basecamp integration is included in every plan. See also how to publish a campaign brief as a Basecamp document or the Basecamp in Google Sheets overview.