Mail Merge Toolkit
Mail Merge Toolkit is a powerful add-in for Microsoft Office extending the mail merging capabilities in Microsoft Outlook, Microsoft Word and Microsoft Publisher. This app allows you to realize really personalized mass mailing easily and efficiently by providing a set of requested and unique features. As soon as you need to personalize part of message subject or the whole subject line, you need Mail Merge Toolkit. Insert data fields into the message subject, so that not only the contents of a message but also its subject is personalized. As soon as Mail Merge Toolkit is installed, you can attach files to the message. Perform the mail merge the same way as you do it usually and click the “Mail Merge Toolkit” option on the last step of the “Step by step wizard” in Microsoft Word to specify the necessary attachments.
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WorldMerge
Email merge is similar to mail merge in Word or WordPerfect - you create a form letter and merge personalized data into each letter. Then your letters are addressed to “Dear Andrew” instead of “Dear Customer,” for example. With WorldMerge, you create personalized messages you send via standard Internet email, fast and easy. You don’t have to print letters, stuff and stamp envelopes and wait several days for a response. Unlike other programs, WorldMerge lets you open your contact databases directly with no tricky importing. If you store your customer information in Microsoft Access or Excel, or if you already have an email list in Eudora or Outlook, you can open that contact file directly in WorldMerge.
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PostRight
PostRight is a UK hybrid mail platform that generates, prints, and posts physical letters via Royal Mail without users needing a printer, envelope, or stamp.
Users select from 18+ legally reviewed templates covering consumer disputes (Section 75, faulty product, refund requests), legal correspondence (letter before action, debt response), and personal or civic matters (eviction, council, rental disputes). Users can also upload their own PDF or write a letter from scratch.
The platform handles printing on professional letterhead, envelope stuffing, address verification, and dispatch via Royal Mail. Letters arrive at UK addresses within 1 to 3 working days.
Address autofill covers 200+ UK retailers, airlines, councils, and HM Prisons. Pay-per-letter pricing with no subscription. Free to browse templates, build, and preview letters. You only pay when you send.
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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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