The USPS provides various mail services, each with its own features. These include First-Class Mail, USPS Marketing Mail, Priority Mail Express, Priority Mail, Periodicals, and Package Services/USPS Retail Ground.

Businesses can use various USPS services to stay in touch with their customers, partners, and vendors. First-Class Mail is the most popular option, starting at $0.73, and it includes mail forwarding and return services.

USPS Marketing Mail, which used to be called Standard Mail, is made for marketing. It's the cheapest option for sending Direct Mail.

Priority Mail Express from USPS is great for sending urgent or important documents. It's their fastest delivery service, but also one of the most expensive.

More on these and other services below!

The Six Classes of Mail and Their Characteristics

We have already listed the six classes of mail services offered by the USPS. Businesses can use any of these services from the USPS to communicate with their

• Customers/Clients
• Partners
• Vendors/Sellers

But, how do you choose the correct USPS mail service for sending your direct mail communications?

Which is the fastest or cheapest option for sending your mailer?

To answer these questions, you need to understand the characteristics of each direct mail service. Listed below are the different classes of mail offered by the USPS.

First-Class Mail

First-Class Mail is perhaps the most popular type of mail for personal or individual communications. Every time you are sending personal postal mail to someone you are most likely using USPS First-Class Mail.

Marketers new to First-Class Mail usually tend to go for First-Class Mail because of its greater flexibility. Suppose you send First-Class Mail at a single-piece price. In that case, you don't have to worry about things like mailing permits or payment methods. You don't even have to presort the mail.

However, the business could end up losing a considerable amount of money if you regularly send First-Class Mail at the single-piece price.

Services

Domestic First-Class Mail

You can use it to send letters weighing up to 3.5 ounces and flats weighing up to 13 ounces across the US. This service delivers the mail in 3-5 business days. It includes features like forwarding and return service at no additional cost. 

First-Class Package International Services

You can ship lightweight packages up to 64 ounces to over 180 countries. While this is a cost-effective method for international shipping, the delivery time depends on the destination. Delivery tracking and confirmation services are only available in select countries, and it is mandatory to complete customs forms for a hiccup-free delivery.

First-Class Mail International

This service can send letters, postcards, and flats weighing 16 ounces to over 180 countries. For letters and postcards weighing up to 1 ounce, you can pay postage using Global Forever Stamps. For anything higher than this, you must pay according to the weight and destination. It offers tracking services for only a select few countries.

Extra Services and Add-Ons

You can upgrade your First-Class Mail with Certified and Registered Mail services. Certified Mail offers a mailing receipt and confirmation that you have sent the mail on a particular day. Upon delivery, you will also get a signature confirming that the recipient at the correct address received your package. Registered Mail takes it one step further and provides insurance coverage. USPS compensates the shipping cost to the sender if the item does not reach the intended recipient. 

Service Offering

First-Class Mail comes equipped with mail forwarding and mail return services. It means that you don't have to pay extra to access these services as it is already included in the postage charge. If you are willing to pay extra, you can also access additional USPS services such as Certified or Registered Mail.

Postage Cost

The postage cost for First-Class Mail stands at $0.73 for an envelope. One of the best things about First-Class Mail is that the postage is the same regardless of how far your recipient lives. However, First-Class Mail may not be the cheapest direct mail option for business communication.

You can get discounts from the USPS for Bulk Mail Services. Businesses usually tend to use First-Class Mail for faster direct mail delivery. But, if you want to use additional services such as Registered Mail for your First-Class Mail, you would have to pay an additional fee.

Delivery Speed

According to the USPS, First-Class Mail is delivered within 1 to 3 business days. As far as speed of communication goes, the delivery time of First-Class Mail is decent, especially for a postal delivery.

USPS Marketing Mail

USPS Marketing Mail was formerly known as Standard Mail, and it is specifically designed for marketing purposes. The purpose of USPS Marketing Mail is clear from its name itself. The most significant advantage of using USPS Marketing Mail is that it is the most economical way to send Direct Mail.

Companies are always looking for ways to cut down on their expenses and USPS Marketing Mail is perfect for that. But, individuals cannot access the USPS Marketing Mail service or get the exact postage rate for their mailers.

 

💡 Also Read: USPS API Changes & Rate Limits

Services 

Bulk Mailing for Promotional Content

You can send a large volume of identical content, such as postcards, flyers, newsletters, and promotional letters. This mailing service is suitable for non-urgent communication. 

Non-Profit Specific Discounts

Eligible nonprofit organizations, such as charities, educational institutions, and religious groups, can receive even higher discounts under the Nonprofit USPS Marketing Mail category. The USPS must authorize them, and they can send printed materials that meet the Marketing Mail criteria. 

Add On Services

You can purchase the following optional services for additional charges:

• Tracking (via Informed Visibility or USPS Intelligent Mail Barcode)
• Ancillary Service Endorsements for undeliverable mail (e.g., Address Service Requested, Change Service Requested)
• Return services

Service Offering

Like First-Class Mail, you also get extra services for USPS Marketing Mail. The most significant among the USPS additional services that you can get for USPS Marketing Mail is Electronic USPS Tracking. It means you can always keep an eye on the progress of your business's marketing mail campaigns.

Another attractive service offering of USPS Marketing Mail is Bulk Insurance. However, it is only applicable for Nonprofit USPS Marketing Mail. It is also worth noting that this type of mail does not get forwarded or returned unless you explicitly request it.

Furthermore, the USPS may also charge an additional fee for mail forwarding and mail return services.

Postage Cost

The main highlight of USPS Marketing Mail is that it is the most affordable way of sending Direct Mail. Fortunately, the commercial pricing for USPS Marketing Mail starts from a mere $0.197, which is an absolute steal, as far as postage rates go.

However, if you were to opt for extra services like Mail Forwarding, you might have to pay an additional fee to the USPS. You should also note that USPS Marketing Mail requires a minimum of 200 mailpieces or 50 pounds of mail to get bulk prices.

USPS Marketing Mail includes letters, envelopes (flats and large), parcels, postcards, and more. The postage cost can vary based on the type of mailer you use.

Delivery Time

USPS Marketing Mail is not the best performer in terms of delivery time. It usually has a longer delivery time than almost all other types of mail delivery. A local mail can take around five business days for delivery, and for national mail, it can take as long as three weeks.

Hence, if you are trying to pitch a time-sensitive event like a season sale, you need to plan well early to ensure its on-time deliverability.

💡 Also Read: How Long Does Regular Mail Take from State to State?

Priority Mail Express

Priority Mail Express service from the USPS is ideal for sending urgent or time-sensitive documents. It is the fastest mail delivery service the USPS offers and one of the costliest.

With a Priority Mail Express service, your mailer will reach its destination in no more than two days. The USPS is so confident in its ability to deliver the Priority Mail Express mailer on time that it even gives you a money-back guarantee.

Services

Priority Mail Express International

This service allows you to send Flat-Rate envelopes weighing up to 4 lbs. and packages weighing up to 70 lbs. to over 180 countries. It ensures delivery in 3-5 business days. The charges for this service depend on the weight of your package and the destination.

Signature Confirmation

It provides the recipient's signature upon delivery, which adds a layer of accountability and security. This can be useful when you have sent legal documents or contracts, and the recipient claims they have not received them.

Guaranteed Delivery

It offers overnight to two-day delivery with a money-back guarantee. If the USPS cannot deliver the shipment on time, you will receive compensation for the shipping cost. Since it offers delivery 365 days a year, including Sundays and holidays, it is suitable for time-sensitive and urgent documents.

Service Offering

Priority Mail Express's most significant service offering is without question the money-back guarantee. But more often than not, businesses that use this service are more concerned about the mail reaching them in time than getting the money back.

Besides the money-back guarantee, Priority Mail Express offers Sunday and holiday delivery. However, it is not available everywhere, and you would have to pay an additional fee.

You also get the USPS tracking feature using Priority Mail Class, and they don't charge you extra for it either. In addition to this, it has Package Pickup and Pickup on Demand services available. Finally, you don't have to pay a separate fee for Mail Forwarding or Mail Return services as it is already included in the postage cost.

💡 Also Read: Does UPS Deliver to PO Boxes?

Postage Cost

Priority Mail Express is USPS's fastest mail delivery service. In addition to this, it has all the service offerings that you could need. USPS even provides $100 insurance for your Priority Mail Express mailers.

Keeping that in mind, it is not hard to digest that the postage cost of Priority Mail Express starts at $26.60. However, USPS also has commercial pricing for its Priority Mail Express service. With commercial pricing, you can send Priority Mail Express letters for just $23.

Delivery Time

As we have already mentioned, Priority Mail Express is the fastest direct mail service from the USPS. According to the USPS, the Priority Mail Express takes a maximum of 2 days for delivery. Most people receive their Priority Mail within a day.

The speedy postal mail delivery via Priority Mail Express makes it best-suited for sending time-sensitive documents. For example, Priority Mail Express can be perfect for sending urgent check payments to their sellers or vendors.

💡 Also Read: Priority Mail Express

Priority Mail

USPS's Priority Mail is like a light version of Priority Mail Express that we discussed above. And as you might expect, the Priority Mail service is a lot cheaper than the Express service. Most people feel that regular Priority Mail has the best value for money out of all USPS direct mail services.

Although it does not promise a 2-day delivery or offer a money-back guarantee, it still gives you fast postal service. Priority Mail is so popular because it makes fast postal mail delivery accessible at a much more affordable price.

Services

Priority Mail International

You can use this service to send small packages weighing up to 4 lbs, large flat-rate boxes weighing up to 20 lbs, and packages weighing up to 70 lbs to over  180 countries. The charges are based on the package's weight and destination, except for the Priority Mail International Flat Rate pricing. It ensures delivery in 6-10 business days.

USPS Tracking

It offers free end-to-end tracking, allowing both the sender and receiver to keep track of the mail pieces. You can access real-time updates from when USPS accepts mail until the final delivery scan.

Insurance Coverage

It automatically includes $100 coverage against loss, damage, or missing content. Depending on the package's value, you can also purchase additional coverage. 

Package Pickup

The USPS mail carrier can collect your Priority Mail item during regular delivery rounds at no additional cost. If you need a time-specific pickup outside the USPS's operational hours, you can utilize a pickup-on-demand service. It comes at a flat fee, regardless of the number of packages you send, and is suitable for businesses with urgent shipping needs. 

Mail Forwarding and Return Services

This service is included in this mailing option at no additional cost.  If the recipient has an active change of address request at the USPS, Priority Mail will redirect the package to that destination. If delivery is impossible, USPS will return the package to the sender. 

💡 Also Read: On-Demand Services Offered by PostGrid Check API

Service Offering

Priority Mail is a particularly convenient way of sending a message via direct Mail. You can send Priority Mail from any Post Office. Or you can even hand over the prepaid Priority Mail to the USPS delivery person without any additional fee.

You also get the USPS tracking feature, and they don't charge you extra for it either. In addition to this, Priority Mail has Package Pickup and Pickup on Demand services available. Finally, you don't have to pay a separate fee for Mail Forwarding or Mail Return services as it is already included in the postage cost.

Postage Cost

The postage for Priority Mail starts from $7.95 if you send it from the Post Office. However, with commercial pricing, you can send Priority Mail for just $7.41. Either way, the price for priority mail is significantly less than that of Priority Mail Express.

Hence, it is no wonder that most people believe that Priority Mail provides the best value when it comes to direct mail services. Priority Mail uses a mailing zone-based system for its pricing. It means that you may have to pay higher postage if the mailer needs to go through numerous zones before reaching its destination.

Delivery Time

Although USPS does not guarantee a delivery time for Priority Mail service, it is usually delivered within a maximum of three days. However, some Priority Mail may take longer to deliver if the recipient lives in an area where the USPS has limited access.

💡 Also Read: How Does ISC New York NY USPS Work?

Periodicals

Periodicals are a class of Mail that the USPS designed explicitly for sending publications such as newspapers and magazines. Usually, the primary purpose of these publications is to transmit information.

Services

Address Accuracy and Ancillary Services

It does not include forwarding or return-to-sender service by default; however, publishers can request address correction and change service for an additional fee. This will help subscribers keep their lists updated, identify undeliverable addresses, and prevent delivery failures in the future.

Optional Add-On Services

If you send legal or sensitive publications, you can club this with certified mail, registered mail, or return receipts for an additional fee.

Service Offering

As you can infer from the name, the Periodicals Mail service offered by USPS is specifically designed for sending periodic direct Mail. It means companies can use it to send newspapers, magazines, and any other publications you need to send periodically. The USPS put several restrictions to ensure that the service is not misused.

Postage Cost

There is no fixed postage cost for sending USPS Periodical Mail. The price for sending Periodical Mail varies depending on several factors.

Delivery Time

USPS’s Periodical Mail service is not famous for its fast delivery. Usually, the delivery time for Periodicals ranges between 3 to 9 business days. However, USPS does not guarantee delivery within this time frame.

💡 Also Read: What Is UPS Surepost

Package Services/USPS Retail Ground

The Package Services from USPS is not just one class of Mail but a collection of three. Types of mail delivery services from USPS that fall under this category include

USPS Retail Ground

It is a ground-based domestic shipping option for non-urgent and oversized packages at affordable rates. It is only available at USPS retail counters and cannot be accessed online.

Services

Bound Printed Matter Service: 

This postal mail service involves sending permanently bound sheets. According to USPS standards, at least 90% of it should be printed with ads, promotional directories, or editorials.

Media Mail:

Media mail is a postal mail service from the USPS that lets you send media materials to your recipients in a cost-effective way. The content of Media Mail can be books, videotapes, DVDs, CDs, printed music, etc.

Library Mail:

USPS enables libraries, museums, and other similar organizations to send items on loan to each other through their Library Mail service. These organizations can send anything from books to academic theses through this method at a meager cost.

Comparison at a Glance

Factors	First-Class Mail	USPS Marketing Mail	Priority Mail	Priority Mail Express	Periodicals	USPS Ground Advantage- Retail
Delivery Time Range	Domestic: 1-5 business days International: Varies by the destination First-Class Package International: Depends on the country where it is going	10-21 business days	Domestic: 2-3 business days International:6-10 business days	Domestic: 1-3 business days International: 3-5 business days	3-9 business days	2-8 business days
Cost	Domestic service: $0.73 International: $1.65 First-Class Package International: Starts at $17.85	Commercial Price: Starts at 0.210 Nonprofit Price: Starts at 0.121	Domestic: Starts at $9.35 International:$30.90	Domestic: Starts at $31.40 International: Starts at $59.50	Starts at $0.092	Starts at $5.25
Maximum Weight Limit	Domestic service: 13 oz (envelopes), 3.5 oz (letters) International: 15.994 oz First-Class Package International: 64 oz	3.5 oz (letters) 16 oz (flats and parcels)	Up to 70 lbs	​​Up to 70 lbs	It varies based on publication type, frequency, and content	Up to 70 lbs Combined length + girth: 130″
Tracking	This is only available for the package services.	You will have to pay an additional fee; however, the tracking is limited.	It is a part of this mailing option.	It offers free, real-time tracking services.	This is an optional service for which you must pay an additional fee.	Tracking is a part of this mailing option.
Use Case	Personal and business correspondence, bills, invoices, lightweight mailers	Bulk direct mail campaigns, flyers, catalogs, promotional materials	Faster delivery of packages, business shipping, and ecommerce fulfillment	Urgent or time-sensitive shipments with overnight delivery and a money-back guarantee	Sending newspapers, magazines, journals, and newsletters to subscribers regularly	Heavy or oversized, non-urgent packages sent to the Post Office

Service Offering

USPS's Package services enable you to send books and other printed materials. Package services come with USPS tracking, and you don't have to pay any additional charges for it. USPS Retail Ground service delivers to every US address.

Hence, if you want to send a mail to a PO Box address or a military address, you can easily do that. Furthermore, Package Services/USPS Retail Ground doesn't have free Mail Forwarding and Mail Return service included in it.

Postage Cost

The USPS Retail Ground service is popular because it makes sending oversized packages affordable. You can send a USPS Retail Ground post for a price as low as $7.95 at your nearest Post Office. The price for packaging service can vary depending on the subclass you are using. For example, the cost of sending media mail starts at $3.19. It is also worth noting that USPS Retail Ground does not have bulk prices.

Delivery Time

Usually, most Retail Ground mailers reach their destination in 2 to 9 business days. However, you shouldn't be surprised if the USPS takes up to 14 business to deliver your USPS Retail Ground mail.

💡 Also Read: Priority Mail Express International

Additional Mail Options From USPS

Apart from the different classes of Mail offered by the USPS, it also provides different types of mail delivery services used in business organizations such as:

• Media Mail
• Business Reply Mail

Although the special services typically fall under one of the six USPS classes of Mail, they can not be considered the same. Usually, the USPS special services are created for a specific purpose, such as affordable business communication.

Hence, they have additional services or specific characteristics that help them accomplish that particular purpose. More importantly, using these services enables the sender to save money. Another notable thing about these special services is that they all involve mass or bulk communication.

💡 Also Read: What is USPS First-Class Mail?

Bundle and Presort the Mail for Lower Rates

By bundling and presorting your mail, you can qualify for significant discounts, saving over 20% to 50% compared to single-piece rates. This is possible because you are doing work that reduces USPS’s labor and processing costs. Moreover, if you use barcoding, the mail is easily processed by the USPS automation machine, which further reduces the cost for eligible businesses.

Choose the Right Mailing Options Based on Your Delivery Requirements

Need	Best USPS Option
Time-sensitive documents	Priority Mail or Priority Mail Express
Cost-effective marketing campaigns	USPS Marketing Mail
Regular communication (e.g., invoices)	First-Class Mail
Bulk publications	USPS Periodicals
Oversized or non-urgent packages	USPS Retail Ground

We recommend not paying for speed unless the message is time-sensitive. You can plan and use slower services, such as USPS Marketing Mail, to ensure timely and cost-effective delivery.

Use Flat-Rate Boxes and Envelopes

This allows you to send items for a fixed price, regardless of their weight and distance.  It is ideal for sending heavyweight items over a long distance. This service is available under Priority and Priority Express Mail.

Optimize Package Dimension and Weight

Ensure your package is within the machinable limit to avoid non-machinable charges. For instance, you must avoid square envelopes or those with clasps. If you send mail through First-Class Mail, keep letter-size mail under 3.5 oz. We recommend using USPS design guides to format mailers correctly and save on processing fees.

Plan Mailing Around USPS Cut-Off and Delivery Time

Every mailing service has a cut-off period and delivery time. If you drop the mail before the cutoff period, USPS will process the package the same day. Otherwise, the delivery time will extend by 24 or 48 hours. Always account for these timelines to ensure timely delivery, especially when sending a sales campaign, holiday mailer, or a notice with a deadline.

💡Also Read: Hold on U.S. Postal Mail Delivery