What is the difference between virtual printing and bulk mailing?

When it comes to sending physical mail through our platform, there are two distinct routes you can take, and choosing the right one can save you time, money, and a few headaches.

Bulk mailing (known as Campaigns on the Stannp.com platform) lets you build a template, upload your recipient list, and leaves us to handle the mail merge for you, unlocking bulk discount pricing along the way.

Virtual printing, on the other hand, is built for when your PDF is ready to go and your mail merge is done, you simply drag and drop it in, and we'll take care of the rest. Both tools have their sweet spot, and knowing which one fits your workflow could make all the difference.

What is virtual printing?

Virtual printing is designed for when you've already completed your mail merge and simply need your finished PDF processed and mailed out. Rather than building a template within the platform, you can drag and drop your pre-merged PDF directly into our virtual printer, and Stannp.com will handle the printing and mailing.

It's ideal for variable documents like invoices that look different every time and can't easily be replicated with a standard template. Just keep in mind that only PDFs can be uploaded, only letters can be sent, and the address block must be positioned correctly in line with the letter design guides, found on the support page. Because virtual printing bypasses bulk campaign processing, it always operates at the single-item (Tier 1) rate rather than bulk discount pricing.

The virtual part refers to the fact that there's no physical printer sitting in your office. The design lives in the cloud. Stannp.com handles the printing, enveloping, and mailing automatically on your behalf.

Virtual printing is ideal for:

• Invoices, statements, and billing notices

• Order confirmation letters

• Welcome packs for new customers

• Win-back campaigns triggered by inactivity

• Appointment reminders (especially in healthcare)

• Any mail that needs to go out in real time, one piece at a time

What is bulk mailing?

Bulk mailing is what most people picture when they think of direct mail. Known as Campaigns on the platform, is the go-to option when you want to send the same or similar piece of mail to a large group of recipients.

You simply build your template within the platform, provide your recipient list, and we'll take care of the mail merge for you. It works across a range of products, including letters, postcards, and self-mailers, and the more you send, the more you save (bulk discount pricing is unlocked exclusively through the Campaigns feature).

Bulk mailing qualifies for USPS Marketing Mail rates (sometimes called bulk mail rates), which can significantly reduce your postage costs compared to sending pieces individually. With Stannp.com, volume discounts also kick in automatically when you send 4,000 or more pieces in a single campaign, bringing your cost per piece down further.

Bulk mailing is ideal for:

• Promotional campaigns and seasonal offers

• New product or service announcements

• Geographic targeting (e.g. everyone within 10 miles of your location)

• Re-engagement campaigns sent to a defined segment

• Event invitations

• Any campaign where you're reaching a large audience at a set time

Why mail merge matters.

If you've used Microsoft Word to send personalized letters, you've used mail merge. It's the process of taking a template with placeholder fields like or and automatically filling them in with data from a list, so each recipient gets a piece that feels personal to them.

In direct mail, the same principle applies. Rather than sending 1,000 identical postcards, you can send 1,000 postcards where each one uses the recipient's name, references their last purchase, or includes a unique discount code. All sent without any manual effort.

This matters because mail merge is built into bulk mailing on Stannp.com. And unlike traditional print shops, Stannp.com charges the same price whether you personalize every piece or keep them all identical. Personalization doesn't cost extra.

According to research from CMS Direct Mail, personalized direct mail has a 6.5% response rate compared to non-personalized communications, totaling just 2%. (Source: CMS Direct Mail). So, whether you're running a triggered campaign or a large batch send, using personalization is almost always worth it.

Virtual printing vs bulk mailing: comparison guide.

Do you still need postage meters?

In the US, some businesses use postage meters (machines that print postage directly onto envelopes) to handle their outgoing mail in-house. They're common in office environments where staff regularly send individual letters or packages.

Postage meters can save time compared to buying stamps, and they do offer slight postage discounts for First-Class mail. But they come with real limitations like having to lease the machine (you can't buy one outright), pay ongoing servicing fees, manage ink and maintenance, stay on top of USPS rate changes, and physically run every piece through the device. For a small volume of everyday business correspondence, a meter can work fine.

However, a postage meter doesn't actually automate anything. It still requires someone to physically feed envelopes through the machine, one by one. It has nothing to do with printing the content of your mail, but rather just the postage on the outside.

Virtual printing, by contrast, handles everything. Once you've completed your mail merge and your PDF is ready, you simply drag and drop it into the platform. Then we take care of the printing, enveloping, postage, and sending. Without any physical equipment at your location.

And for bulk campaigns, Stannp.com's volume discount pricing means you're accessing USPS cost savings without needing a meter at all. For most modern businesses running marketing campaigns or personalized documents, virtual printing and bulk mailing make postage meters largely unnecessary.

How to decide what you need.

Ask yourself what kind of mail you're trying to send.

Already have your mail merge done and a finished PDF ready to go? That's where virtual printing comes in. Simply drag and drop your pre-merged PDF into the platform, and we'll take care of the printing, enveloping, postage, and sending. No physical equipment or manual post office runs required.

Is it a campaign you're sending to a defined list at a set time? That's bulk mailing. Upload your list as a CSV, design your piece (or upload a PDF), schedule your send date, and Stannp.com handles everything from there.

Do you need both? Many businesses find themselves using both at different times. You might run quarterly promotional campaigns via bulk mailing while also using virtual printing to send batches of pre-merged invoices or documents that vary too much to be handled with a standard template.

Getting started with Stannp.com.

One of the biggest advantages of using Stannp.com for both virtual printing and bulk mailing is that there's no minimum order. You can send a single piece to test your design and message before committing to a larger campaign. Something traditional print vendors and postage meter setups simply can't offer.

For automation, Stannp.com integrates directly with platforms like HubSpot, Salesforce, Zapier, and Make, so you can connect your existing tools without any complex development work. For developers who want deeper control, the full REST API gives you complete access to the platform programmatically.

And whether you're sending one piece or one million, USPS CASS-certified address verification runs automatically on every list you upload, reducing undeliverable mail and wasted spend before a single piece goes to print.

Frequently asked questions.

What's the difference between virtual printing and bulk mailing?

Virtual printing is for when you've already completed your mail merge and have a finished PDF ready to send. You drag and drop it into the platform, and we handle the printing, enveloping, postage, and sending. Bulk mailing is for sending the same or similar piece to a large list of recipients, where the mail merge is completed within the platform, and volume discount pricing is available.

Do I need a postage meter to send bulk mail in the US?

No. Stannp.com handles postage automatically as part of the service. You don't need to lease or maintain any physical equipment.

What is mail merge in direct mail?

Mail merge is the process of personalizing each piece in a mailing with recipient-specific information, like their name or address, pulled from a data list. With bulk mailing on Stannp.com, the mail merge is completed within the platform. With virtual printing, you complete the mail merge yourself beforehand and upload the finished PDF.

Can I personalize bulk mail campaigns?

Yes. You can use variable data to personalize every piece in a bulk mailing with different names, offers, or messages for each recipient, all generated from your mailing list data.

What can I send using virtual printing?

Currently, virtual printing supports letters only, and files must be uploaded as PDFs. Your address block will need to be positioned correctly in line with the letter design guides found on the support page.

What is virtual printing best used for?

Virtual printing is particularly useful for documents that vary significantly each time and can't easily be handled with a standard template, such as invoices. As long as the page count is consistent, your PDFs can be processed in one simple drag and drop.

Can small businesses use virtual printing?

Yes, it is available to businesses of all sizes. Because it operates at the single-item (Tier 1) rate, it's straightforward to use for lower-volume sends without any minimum order requirement.