DocuSend
Remotely send your documents directly to the United States Postal Service through our cloud-based mailroom. DocuSend works with any accounting, billing, or CRM software that produces PDF documents containing a valid mailing address. Users can upload directly, or developers can integrate our REST API to offer a "Send Mail" button in their software, either as a reseller or for internal direct connectivity. There are enormous economic advantages for any business or organization that needs to safely print and mail documents on demand. We also offer an automated email service called DocuLink that lets you know which users open the document links sent and makes it easy to follow up with a hard copy if needed. We are sure that one of our features will improve your mailing experience: DocuSend, DocuLink or the Print-To-Mail Rest API will streamline the manual and time-consuming print, mail and email process.
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PrintPigeon
PrintPigeon is a digital-to-physical mail service that makes sending letters as easy as sending emails. Users upload documents through our web platform, and we handle professional printing and posting to UK and international destinations. Features include: next-day delivery options, competitive pricing from £2.49, order tracking for UK mail, support for multiple document formats, automated formatting, and integration with postal networks. Eliminates the need to visit post offices while maintaining professional print quality. Ideal for businesses sending contracts/official documents, individuals with mobility challenges, HMRC correspondence, international letters, and anyone seeking convenient mail services. 24/7 online access with real-time status updates.
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LetterFriend
LetterFriend is a direct mail and handwritten letter service that helps organizations create personalized, real-handwritten notes, envelopes, and cards, crafted by professional writers rather than fonts, robots, or printers, to cut through digital noise and strengthen customer relationships, referrals, and pipeline growth through high-impact physical outreach. The platform lets users upload contact lists via CSV or integrate with CRM systems, Zapier, or an API to automate and scale campaigns, whether sending thank-you letters, prospecting notes, holiday cards, or other personalized correspondence that is hand-addressed, handwritten, and mailed on behalf of the customer. LetterFriend emphasizes human-touch direct mail with real people in New Jersey writing each word, delivering consistently higher open and response rates compared with typical printed or email outreach, and offers customizable options such as envelopes, sticky notes, signatures, postcards, etc.
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Stamps.com
With Stamps.com, you can easily buy, calculate and print official USPS® postage for anything from postcards to envelopes to packages – domestic or international. Print on a variety of labels, envelopes or plain paper. No more guesswork. No more overspending. Just place your letter or package on the Stamps.com scale (free with every account) and the exact weight is sent to the software and the correct postage amount is printed. Not sure what mail class to choose? No problem. Stamps.com will help you select the best mail class based on price and delivery time. With Stamps.com, anything you can do at the Post Office you can do right from your desk 24/7. No waiting in line. No traffic. No more wasting valuable time you could be using to grow your business. Just print your postage, stick it to your mail and your mail carrier will pick it up for free.
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