Mail merge · real post
Write once. Make every letter personal.
Reach your whole address list with a letter that feels personal. Write your message once. PieterPost fills in each recipient’s details and delivers your words on paper.
You write. We print, stamp and send.
See how it works
From address list to personal post
See how to turn your address list into personal letters in just one minute.
From address list to letterbox in one minute.
Read the walkthrough
- Import your address list. Upload a CSV, add addresses or choose contacts from your address book. Bring all your recipients together in one place.
- Make every letter personal. Switch on Bulk and write your message. Use fields like {{name}}, {{city}} and your own variables to give every letter a personal touch.
- Send your mailing. Browse your personalised letters and complete your order. PieterPost prints, stamps and sends them for you.
Try it yourself
One letter. Personal for everyone.
A different name, city, date or membership number: PieterPost fills it in for you. Choose a recipient and watch your letter change.
Your letter template
Dear {{name}}, Join us at our members’ meeting in {{city}} on {{date}}. Bring your membership card; your membership number is {{member_id}}. Best wishes, The committee
{{name}}- Noor de Vries
{{city}}- Amsterdam
{{member_id}}- L-1042
{{date}}- 12 November 2026
The letter for Noor de Vries
Dear Noor de Vries, Join us at our members’ meeting in Amsterdam on 12 November 2026. Bring your membership card; your membership number is L-1042. Best wishes, The committee
Every recipient gets the right details automatically.
Add your own details, from customer numbers to appointment dates. Give every recipient a letter written for them.
PieterPost Designer
Your letter. Your style.
Your colours, your fonts, your look. Combine text, photos, illustrations and QR codes in the PieterPost Designer to create a letter that fits your message.
All that creative freedom. No extra cost.

For every occasion
Give your message a place on the doormat.
- Invitations for your club or event
- Updates for customers or members
- A personal thank-you letter to everyone on your list
Frequently asked questions
Your mail merge questions
How does mail merge work?
Write one letter and connect it to your address list. PieterPost fills in each recipient’s name and other details. Send a whole mailing with the care of a personal letter.
Can I use my Excel address list?
Yes. Save your Excel list as a CSV and import it into PieterPost. Use the CSV template to put addresses and personal details in the right columns.
What can I personalise?
Your greeting, an appointment date, a customer number or a personal message. Use names, addresses and cities from your list and add your own variables for the details that make your letter special.
Can I design my own letter?
Absolutely. The free PieterPost Designer lets you choose your layout, fonts and colours. Add your logo, photos, illustrations or a QR code and make your letter your own.
How much does a mailing cost?
PieterPost calculates your mailing’s price based on the number of letters, pages and destinations. Printing, postage and sending come together in one order.
Who handles printing and posting?
We do. Create your letter online and PieterPost handles the rest. From your screen to every recipient’s letterbox.
Ready to send
Your next mailing? Ready to post.
Grab your address list and write your message. We’ll turn it into personal post.