How do PostGrid’s certified mail prices compare with KiteCourier’s?

PostGrid’s pricing page lists Certified Mail at $6.94 per piece, or $9.85 with an electronic return receipt, and does not say whether that figure is added to its base letter price, so check the total before you compare. KiteCourier’s $14.99 and $19.99 are the whole price: printing, the envelope, USPS postage and the tracking record, with no subscription.

Does PostGrid have an API for certified mail?

Yes. PostGrid’s API sends letters with an extraService of certified, certified_return_receipt or registered, and reports tracking by webhook. KiteCourier sets up API integration for business customers on request.

Can PostGrid send certified mail in bulk from a CSV?

PostGrid accepts CSV uploads, and its Campaigns feature, labeled Beta, maps CSV columns. Its pricing page lists CSV bulk mailings under the Enterprise plan. KiteCourier’s bulk campaigns take a CSV or Excel file and are available to organization accounts.

How does the return receipt work with PostGrid?

PostGrid lists an electronic return receipt at $9.85 per piece. One of its articles says the sender downloads the PDF from USPS.com with the tracking number. With KiteCourier you also request the receipt from USPS once the letter shows Delivered.

Is KiteCourier affiliated with PostGrid?

No. KiteCourier is independent and is not affiliated with or endorsed by PostGrid. We read PostGrid’s public pages on October 28, 2026 and link each fact to its source.

Comparison

KiteCourier vs PostGrid

PostGrid is a print and mail platform built around an API. KiteCourier is a web app for sending certified letters. Here is what each costs and handles.

Competitor facts checked October 28, 2026.

Send Certified Mail View Pricing

Quick answer

KiteCourier is built for certified notices: one flat price per letter that covers printing, the envelope, USPS postage and the tracking record, bulk campaigns from a spreadsheet with every address checked against USPS before anything prints, and a web app your staff can use the same day. PostGrid is a developer platform for many kinds of mail, with a per-piece price table and an Enterprise tier for bulk. Its listed figures, and the questions its pages leave open, are in the table.

Choose KiteCourier if

You mostly send certified letters and notices, not a mix of mail types.
You want a flat price per letter and a web app your staff can use without a developer.
You send the same notice to a list and want every address checked with USPS first, with left-out letters not charged.

Choose PostGrid if

You also send postcards, cheques or other kinds of mail.
You are building your own software and want to wire mail into it from public API docs.

At a glance

Every PostGrid fact below links to the page we read it on. Where a page was unclear, we say so instead of guessing.

Feature	KiteCourier	PostGrid
What it is	A web app for certified letters and bulk notices	A print and mail platform with an API and a dashboard for letters, postcards and chequesSource: PostGrid API docs
Who prints and mails	KiteCourier prints the letter and hands it to USPS	PostGrid verifies the address, sends the job to a local print partner and hands it to the postal serviceSource: PostGrid print and mail service
Certified Mail, one letter	$14.99	$6.94 per piece in the Starter column of its price tableSource: PostGrid pricing
With electronic return receipt	$19.99	$9.85 per pieceSource: PostGrid pricing
What the price covers	Printing, envelope and USPS postage, up to 6 sheets	Printing, processing and postage. The page does not say whether the figure is added to the $1.059 black-and-white letter priceSource: PostGrid pricing
Subscription	None. You pay per letter	Starter is $0 a month for up to 500 mailings a month, with an overage fee that is not published. Enterprise is customSource: PostGrid pricing
Bulk from a spreadsheet	Bulk campaigns for organization accounts, from a CSV or Excel file	CSV upload. The price page lists CSV bulk mailings under Enterprise, and Campaigns is labeled BetaSource: PostGrid Campaigns guide
API and integrations	API integration on request	REST API with tracking by webhook. Zapier and Stripe on Starter, CRM integrations on EnterpriseSource: PostGrid API docs
Long letters	Over 6 sheets adds $3.00 plus $0.25 a sheet	Letters over 6 sheets (12 double-sided pages) add $5.50 postageSource: PostGrid pricing
Where certified mail works	U.S. addresses	U.S. mailings, on letters and cheques onlySource: PostGrid mailing options guide

KiteCourier is not affiliated with PostGrid. Prices and features change, so confirm current details on PostGrid’s own pages.

What we could not confirm

We looked for these on PostGrid’s public pages and did not find them stated. Ask PostGrid before you rely on them.

Whether the Starter plan includes Certified Mail and CSV bulk mailings. The price table shows Certified Mail under Starter, but the feature table ticks it only under Enterprise.
Whether the $6.94 is the whole price or is added to the $1.059 black-and-white letter price.
A paper return receipt (green card) option or price.
The overage fee above 500 mailings a month.
Limits on CSV rows or file size, and on PDF size or page count beyond the 6-sheet surcharge.

Sources

Found a mistake? Tell us at the address on our editorial standards page and we will check it and fix it.

Workflow difference

Both services print and mail for you. The difference is how you hand over the letter and who it is built for.

PostGrid workflow

1Create an account, then add the letter in the dashboard or send it through the API.
2Choose the Certified Mail extra service. It works for U.S. letters.
3PostGrid verifies the address and sends the job to a print partner.
4The letter is mailed, and tracking updates arrive by webhook.

KiteCourier workflow

1Upload your PDF and enter the address.
2Choose a return receipt option and pay.
3KiteCourier prints the letter and hands it to USPS.
4Track every letter from your account.

Common questions

Send a certified letter from the web.

Upload a PDF, pay per letter, and keep the tracking record in your account.

Send Certified Mail View Pricing