Sending documents is easy. Distributing confidential information securely, efficiently, and in a personalized way is a very different challenge. Invoices, account statements, sales reports, payroll documents, and other sensitive files often require hundreds of individual deliveries every month. When handled manually, these processes not only consume valuable time but also increase the risk of errors that may compromise information confidentiality. In this article, we will explore how to automate the delivery of personalized documents directly from Excel, improving productivity while reducing operational risks.
Imagine this: It's the end of the month and you need to send invoices to 80 clients, sales reports to 25 branches, and payroll slips to your team. You copy files, change names, attach them manually, and double-check that everyone receives exactly what belongs to them… 2 or 3 hours later you finish exhausted and worried about sending the wrong document to the wrong person.
The risk is real: a client receives someone else’s invoice, a branch sees confidential data… and valuable time is wasted on repetitive tasks that could be used for analysis or sales.
Keep using manual processes, Word mail merge, or complicated macros? ❌
Or send everything personalized and secure in minutes? ✅
Did you know you can extend Excel with Add-ins? Optipe's Freemium editions include tools that automate repetitive tasks directly inside Excel. Install them for free in less than a minute and discover how much time you can save.
TRY IT. YOU'LL GET IT.
📊 The most common pains when sending documents from Excel
Searching for the right file, attaching one by one, and verifying each recipient.
Real pain: Easy to make mistakes and high risk of sending confidential data to the wrong client.
Setting up fields, merging documents, and generating deliveries.
Real pain: Complex, slow, and doesn’t always work well with multiple attachments.
Finding code online, adapting it, and debugging every time the process changes.
Real pain: Requires technical knowledge and constant maintenance.
AI generates a macro, but it often fails with files, folders, or real personalization.
Real pain: Not reliable for critical processes and still requires manual testing.
⚡ How MultiMail solves it in minutes
MultiMail works directly from Excel and Outlook, sending individual emails (not bulk) to avoid spam and ensure delivery. Here are the most used modes for invoices and reports:
1. Send Excel Workbook Sheets
🟢 Solution with MultiMail
Select the sheets that correspond to each recipient and send them automatically as Excel attachments or converted to PDF. Ideal for branch reports or management indicators.
2. Send Files and Documents
🟢 Solution with MultiMail
Automatically searches a folder for files that match the recipient’s identifier (ID, customer code, branch name) and attaches them. Perfect for individual invoices or payroll slips.
3. Send Multiple Documents per Recipient
🟢 Solution with MultiMail
Sends all documents belonging to one client or branch in a single email (invoice + purchase order + delivery note, for example). Automatically groups by code or identifier.
Example: Automatically Sending Management Reports by Branch
MultiMail scans your folder for files that match the recipient's name or ID and attaches them automatically.

With any of these methods, MultiMail eliminates repetitive labor and drastically reduces the risk of mistakes. Every recipient receives exactly what belongs to them safely and professionally.
⏱️ Real Time Savings
| Task (50-80 recipients) | Manual / Macros | With MultiMail |
|---|---|---|
| Sending personalized invoices or reports | 2-3 hours | 8-12 minutes |
| MONTHLY TOTAL | 10+ hours | Less than 1 hour |
📚 Related Articles
📚 Recommended Resources from Excel Experts
At Optipe, we firmly believe in the Excel ecosystem. Here are reliable guides from respected colleagues validating the importance of optimizing these workflows:
📚 Want to keep improving your Excel productivity?
Check out our other articles where we solve real Excel problems with Data Tools Suite and MultiMail:
Go to Optipe Blog →💡 How to Automatically Send Pay Stubs and Employment Certificates from Excel
Automate your Excel work and save hours every week
Data Tools Suite includes 18 applications to automate data management, tables and worksheets in Excel.
MultiMail lets you send personalized emails, documents and reports directly from Excel.
Try it. You'll get it.
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