Mail Merge Toolkit 2026: Benefits, Features & Pricing

Mail Merge Toolkit is an add-in for Microsoft Office that extends mail merging capabilities in Outlook, Word, and Publisher. It allows users to create personalized mass mailings by providing unique features that go beyond the built-in mail merge functionality.

The software caters to organizations and individuals who frequently send bulk email correspondence to large contact lists. It helps personalize communications and save time compared to manually sending individual messages. One of its key features is the ability to personalize email subject lines by inserting data fields from the recipient list. This enables custom subject lines for each contact, making messages more relevant and increasing open rates.

It enables users to attach files and send personal attachments to each recipient based on data fields. For instance, users can send each person a unique PDF attachment by specifying the file path and name in their data source. Mail Merge Toolkit also lets users send personalized PDF files as attachments with just a few clicks. The text from the message body is merged into the PDF attachment for each contact.

Furthermore, the software allows securing sensitive attachments by p...