The Scenario
You are a developer advocate at a SaaS company. The new onboarding email sequence launches in 48 hours and you need 800 subscribers imported into the Mailtrap contact list before the first drip fires.
The list is in an Excel workbook: emails in column A of the Subscribers tab, first names in column B, last names in column C. The import needs to happen before tomorrow's launch window and you have never worked with the Mailtrap bulk import API.
The bad version of the next two hours:
- You read the Mailtrap API docs to find the bulk contact import endpoint
- You write a script, get the auth wrong, fix it, get the payload shape wrong
- You run the import, hit a rate limit, back off, rerun
- You try to verify the count in the Mailtrap dashboard and it does not match your row count
- You are still debugging at midnight and the sequence fires with a partial list.
The fast version is one prompt.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your Excel workbook that reads the subscriber data and handles the Mailtrap API call for you.
Open the SheetXAI sidebar and type:
Take all emails in column A, first names in column B, and last names in column C of the Subscribers tab and bulk-import them into Mailtrap contact list ID [list_id]. Write the import job status and the number of contacts successfully created into cell D1 once complete.
SheetXAI reads the workbook, calls the Mailtrap bulk import endpoint, waits for the job to finish, and writes the result back to D1. The sequence launches with the full list.
What You Get
A confirmed import result written directly into the workbook:
- Cell D1 — import status and contact count
- Error flag — if any rows were rejected, SheetXAI notes the count and reason
- No manual API work — you did not write a single line of import code
You do not have to cross-check the Mailtrap dashboard against the workbook. The status lands in D1 and you know immediately whether to move on or investigate.
What If the Data Is Not Quite Ready
Real subscriber lists almost never arrive clean. SheetXAI handles cleanup and import in the same prompt.
When email addresses have trailing spaces or inconsistent casing
Normalize all emails in column A of the Subscribers tab to lowercase and strip whitespace. Then import them into Mailtrap contact list ID [list_id] with first name from column B and last name from column C. Write import status into D1.
When first and last names are combined in one column
Split the full names in column B using the first space as the delimiter into first name and last name. Import all rows into Mailtrap contact list ID [list_id] with email from column A and the split name values. Write import status into D1.
When you only want this month's opt-ins
Filter to rows where the opt-in date in column D falls within the current calendar month. Import only those rows into Mailtrap contact list ID [list_id] with email from column A and names from columns B and C. Write the imported count into D1.
When the workbook has duplicates and partial data to clean first
Deduplicate rows in the Subscribers tab by email address in column A, keeping the row with the more recent opt-in date in column D. Remove rows where column A is blank or lacks an "@" symbol. For blank first names in column B, default to "Subscriber." Import all remaining rows into Mailtrap contact list ID [list_id] and write the final count into D1.
The pattern: cleanup and import in one prompt. You describe the end state, not the sequence of API calls.
Try It
Get the 7-day free trial of SheetXAI and open any workbook with subscriber data, then ask it to push the list into Mailtrap. The Mailtrap integration is included in every SheetXAI plan. See also how to audit suppressed addresses before your next send or the Mailtrap in Excel overview.