The Scenario
You are a platform engineer at a SaaS startup. You are setting up a brand-new Postmark server for the v2 launch. The architecture team has defined 4 message streams in a Google Sheet: stream name in column A, type (Transactional or Broadcasts) in column B, description in column C.
The streams need to exist in Postmark before the engineering team can wire up the send calls next week. You also need a full inventory of what was created, with stream IDs and subscription management URLs, for the infrastructure doc.
The slow version:
- Log into the new Postmark server
- Click "Create message stream," fill in name, type, description
- Repeat four times
- Copy each stream ID from the dashboard into the infrastructure doc by hand
- Screenshot the configuration for the compliance folder
- Twenty minutes of clicking for something that should take thirty seconds.
The fast version is one prompt.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your spreadsheet that creates each message stream in Postmark and writes the configuration back into the sheet.
Open the SheetXAI sidebar and type:
Create a Postmark message stream for each row in the 'Streams' sheet — stream name in column A, type (Transactional or Broadcasts) in column B, description in column C — and write the returned stream ID into column D. If a row fails, write 'Error: [reason]' into column D.
SheetXAI reads all four rows, calls the Postmark message stream create endpoint, and writes the stream IDs back. The infrastructure doc is ready before you finish your coffee.
What You Get
Four message streams created in Postmark, with stream IDs in column D:
- Stream IDs — ready to paste into the engineering team's config
- Error reasons for any failures — specific to the row that failed
- The sheet is now the infrastructure record for the new server
Want the full stream inventory including subscription management URLs? Add a second prompt:
List all Postmark message streams on this server and write stream ID, name, type, and subscription management URL into columns A through D of the 'Stream Inventory' sheet.
That gives you the complete picture of what is running on the server, not just the four you just created.
What If the Data Is Not Quite Ready
Stream specs evolve between the architecture meeting and the actual setup.
When the type column has inconsistent capitalization
Some rows say "transactional," some say "Transactional," some say "TRANSACTIONAL." Postmark is case-sensitive.
Normalize the values in column B of the 'Streams' sheet to title case (Transactional or Broadcasts). Then create a Postmark message stream for each row and write the returned stream ID into column D.
When you need to check if any of the stream names already exist before creating
The server was partially set up by someone else and you do not want to create duplicates.
List all existing Postmark message streams and write their names into a temporary column F of the 'Streams' sheet. For each row in column A where the name does not already exist in column F, create the stream and write the returned stream ID into column D. Write 'Already exists' for rows where the name is already in use.
When the spec sheet has more streams than you need for the initial launch
The architecture team defined 8 streams but only 4 are needed for v2 launch. The others are marked "Later" in column D.
Create a Postmark message stream only for rows in the 'Streams' sheet where column D does not say 'Later'. Write the returned stream ID into column E.
When you need to create the streams, pull the full inventory, and format both into a single infrastructure doc in one shot
The VP of Engineering wants everything in one place before the launch review on Monday.
Create Postmark message streams for all rows in the 'Streams' sheet where column D is blank — name from column A, type from column B, description from column C — and write the returned stream ID into column D. Then list all Postmark message streams on this server and write stream ID, name, type, and subscription management URL into columns A through D of the 'Stream Inventory' sheet, sorted by name ascending.
The pattern: create the resources and document them in the same prompt. The infrastructure doc writes itself.
Try It
Get the 7-day free trial of SheetXAI and open your stream spec sheet, then ask it to set up your Postmark message streams. The Postmark integration is included in every SheetXAI plan. For related workflows, see how to push email templates into Postmark from a sheet or the Postmark in Google Sheets overview.