In general, bulk mailings will use the lower Standard Class postage rates. In fact, the terms 'bulk mail' and 'standard class mail' are commonly used to mean the same thing. But you also have the option to send your 'bulk' mailing out First Class using First Class Presort postage rates and there may be a good reason to do that. Here is a summary of the differences and some things to consider when doing commercial mailing.
1. Price
Standard class mail is pre-sorted as a requirement and rates will usually be significantly lower. The rates for non-profit are reduced even further.
2. Postcard Rate Option
Postcard rates are only available under the first class pricing matrix. To qualify as a 'postcard' your mail piece must be 4.25 x 6 or less.* It may be less expensive to mail at the postcard rate and benefit from the advantages of first class.
2. Speed of Delivery
First class delivers faster. It is usually delivered within a week in the continental U.S. and is likely to deliver in 1-2 days locally. First class is given priority by postal workers. Standard class mail will typically take 3-5 business days locally but could take weeks to deliver out of state.
3. Returns and Forwarding
First class mail is returned to sender or forwarded with no additional charge. Standard class mail is not forwarded or returned unless requested by the use of ancilliary service endorsements where there is a fee for each undeliverable address.
4. Minimum Piece Requirements
A standard class mailing has a 200 piece minimum.* A first class presort mailing has a 500 piece minimum.
5. Weight Requirements
First class can be used for postcards, letters, large envelopes (flats) and small packages up to 13 oz. Standard class can be used for letters, large envelopes (flats) and small packages up to 16 oz. Standard class rates are the same for mail pieces up to 3.3 oz.
* These statements are intended as guidelines only. Other rules and requirements may apply. Please refer to the Domestic Mail Manual for a complete explanation of postal regulations.
