What Types of Mail Can You Send with LetterStream?

LetterStream allows businesses to send multiple types of mail online, including First-Class Mail, Certified Mail, postcards, coupon booklets, FedEx 2Day, and more, all through one simple platform.

What types of mail can you send with LetterStream? We hear this question a lot from teams who just want mail to be simple and dependable.

LetterStream is built for businesses that need to send mail without slowing everything else down. Instead of juggling printers, spreadsheets, and Post Office trips, teams can manage their mail in one place and trust that it’s handled accurately and reliably.

Below is a clear look at the types of mail and mail products you can send, along with guidance on when each option makes sense.

USPS First-Class Mail

USPS First-Class Mail is the most common choice for everyday business communication. It works well when tracking or proof of receipt isn’t necessary, and you simply need your mail sent through the postal system without extra steps.

Many customers and businesses use First-Class Mail for routine letters because it’s straightforward and predictable.

First-Class Mail is often used for:

General business letters
Invoices and billing statements
Customer notices and updates

USPS Certified Mail

USPS Certified Mail is designed for situations where confirmation matters. It includes tracking and can include proof of receipt through Electronic Return Receipt (ERR), which helps support documentation and recordkeeping.

This option is commonly used when accountability is required, but the process still needs to stay efficient.

Certified Mail is often used for:

Legal and compliance notices
Important business communications
Mail that requires tracking

FedEx 2Day Mail

FedEx 2Day Mail is the fastest sending option available through LetterStream. It includes tracking and can include proof of receipt through an electronic signature.

This option is typically used when timing is critical, and documents need to move quickly without sacrificing accuracy. It’s also the most reliable and offers the highest level of security.

FedEx 2Day Mail is typically used for:

Time-sensitive business documents
High-priority communications
The most secure way to send mail

Postcard Mail

Postcard Mail is a good fit when your message is short and doesn’t need an envelope. It’s also good when design is an important element in your messaging. LetterStream offers postcards in two sizes, making them useful for reminders, announcements, and simple outreach.

Postcard options

Pro Postcard: Full-Color 5.5” x 8.5”
Express Postcard: 4.5” x 5.5”

Because the message is visible right away, postcards are often chosen when clarity and visibility matter most.

Flats Mail Options

Flats Mail is used for larger mail pieces that don’t fit into a standard envelope. This option works well when your materials need more space, such as detailed notices, HOA Annual Meeting notices, or expanded communications.

Businesses often use Flats Mail when the content is too large for standard letter formats but still needs to be sent consistently and accurately.

Payment Coupons

Payment coupons are typically used for recurring payments and structured billing programs. These mailings help customers submit payments by mail using preformatted coupons.

They are commonly paired with:

Membership programs
Subscription services
Ongoing billing cycles

Payment coupons are sent using First-Class Mail and help keep recurring communications organized.

Statements & Invoices

Statements and invoices are some of the most commonly sent types of business mail. LetterStream supports these mailings when accuracy, consistency, and timing matter.

Businesses often rely on this option for billing communications that need to go out regularly without manual effort.

Ballot Proxy Mail

Ballot Proxy mail is used for official voting materials, such as HOA ballots, association elections, and proxy voting documents.

These mailings often require careful handling, consistency, and clear presentation. LetterStream helps organizations manage this type of mail without adding unnecessary complexity.

Mail Products You Can Send with LetterStream

For businesses sending multiple types of mail, LetterStream provides a single platform to manage it all. From one-off letters to recurring communications, the system is designed to support a wide range of use cases while keeping the process simple.

This flexibility allows teams to adjust how they send mail as needs change, without switching tools or workflows.

Choosing the Right Mail Option

Let’s recap. If you’re deciding which option fits your situation, this breakdown can help:

First-Class Mail works well for everyday correspondence
Certified Mail adds tracking and proof of receipt
FedEx 2Day Mail supports high-priority situations
Postcard Mail is ideal for short, visible messages
Flats Mail supports larger mail pieces
Payment coupons work well for recurring billing
Statements and invoices support regular financial communication
Ballot proxy mail supports official voting needs

Each option is designed to solve a specific problem while keeping mail simple and manageable.

To learn more about LetterStream or to sign up for a free account, click here.

LetterStream offers bulk printing and mailing services, allowing companies to send physical mail online. Whether it’s online Certified Mail, First-Class Mail, FedEx 2Day, or postcards, we give both small businesses and large corporations the time and freedom back to work on tasks that better serve the company. If you’re interested in creating a free account, you can do so here.

Easily Send Postcards Online and Why They Work

You know what’s wild? Postcards still work.

Even in a world of cluttered inboxes, push notifications constantly going off, Slack pings, and at least one text thread you forgot to answer last week—an old-fashioned postcard still finds a way to be seen. Touched. Read. Maybe even pinned to the fridge.

We send a lot of mail here, and let me tell you: business postcards punch way above their weight.

This is especially true when you’re not just sending them to say hi—you’re using them to remind, alert, warn, or get someone’s attention fast, especially from a business perspective.

Let’s break this down.

Why send postcards in the first place?

Because they skip the envelope. That’s it. That’s the post.
(Just kidding—but also kind of not.)

Okay, here it is. When someone pulls a postcard out of their mailbox, your message is right there. No extra steps, no tearing it open, no wondering if it’s junk. Whether it’s a reminder for an HOA meeting, a past-due notice, or a friendly “Hey, don’t forget,” a postcard is the fastest way to get seen.

And bonus: they’re usually cheaper than full letters, which adds up if you’re sending hundreds (or thousands).

Ok, so what’s the catch?

Honestly? The only catch used to be that you had to design them, print them, cut them, stamp them, and then physically go to the Post Office to send them. Or you had to pay to have someone else do the first part to then have them send the postcards to you, and then again, you still have to go to the Post Office to send them off.

But we built not one but two postcard options that solve all that—so you can literally upload a file, pick your postcard, and let us do the heavy lifting. (Like, within 24–48 hours kind of fast.)

What are the two postcard options?

Glad you asked. They’ve got very official names: Express and PRO.
Here’s the simplest way to think about them:

📨 Express Postcard

Size: 4.25″ x 5.5″
Image on one side
Black-and-white or color
Printed on 80# white paper
Quarter-inch white margin
Simple, fast, gets the job done
Great for reminders, updates, or “hey, you missed a payment” types of messages
Mailed First-Class

Think of this one as your reliable little workhorse. No fuss, just results.

Learn more about Express Postcards here: High Quality Postcards | Full Bleed Color | Easy To Use – LetterStream

📣 PRO Postcard

Size: 5.5″ x 8.5″
Full-color, full-bleed on both sides
Bigger, bolder, and much more “look at me”
Printed on 120# premium paper
Best for announcements, events, or anything visual you want to pop
Mailed First-Class

This one? This is your show pony. It’s got stage presence.

Learn more about Pro Postcards here: High Quality Postcards | Full Bleed Color | Easy To Use – LetterStream

But how hard is it to actually send one?

Here’s the magic:
It takes less time than it does to complain about your postage meter.

You just:

Upload your PDF (front/back or just one side)
Upload your addresses
Pick Express or PRO
Hit send

That’s it. No minimums. No templates to wrestle with. No Post Office runs. We’ll even show you a real-time proof online before you approve it.

Let LetterStream send your postcards for you

You’ve got enough to do. If you need to get a clear, important message in front of someone—fast—skip the envelope and go with a postcard. And even better, skip doing it all yourself!

If you’ve got a message to send, we’ve got a postcard for it. Click here to create a free account and start sending your postcards instantly.

(And yes, you really can send one right now. We’re ready when you are.)

LetterStream offers bulk printing and mailing services, allowing companies to send physical mail online. Whether it’s online Certified Mail, First-Class Mail, FedEx 2Day, or postcards, we give both small businesses and large corporations that time and freedom back to work on tasks that better serve the company. If you’re interested in creating a free account, you can do so here.

Always Learning…

Our customers are always surprising us with new and inventive ways to use our products.

Here are a couple great ideas:

Save money with postcards. Some of our property management customers have found that they can save a fair bit of money by using postcards to present first violation notifications.
Simple thank you’s go a long way. Those same property management customers use postcards to send simple “Thank You” notes to those residents that are doing a great job keeping their yards spic-and-span. A great, inexpensive way to let residents know that they are appreciated.

Give it a try!…

Create and send postcards with LetterStream