18.3
Carbone merges JSON data with document templates to produce files such as PDF, DOCX, XLSX and PPTX.
Free planOpen sourceWebAPILinux
Best Mail Merge Software in 2026
Mail merge software helps turn records into personalized messages or documents, and the right fit depends on both your source data and the result you need. Compared on data sources, batch personalization, delivery channels and output types, the options also differ in API access and monthly merge limits. Check whether a free plan is available and what paid access starts from as you weigh cost against your expected…
28.2
Mailmeteor is a personalized email campaign tool that helps users manage replies from Gmail, Outlook and other tools.
Free planAndroidiOSWeb
37.9
S-Docs automates document generation and e-signatures using CRM data.
Free planiOSWebAPI
- 4
PDFMonkey
PDFMonkey is a cloud document-generation API that turns templates and dynamic data into files.
Free planWebAPI7.6From €5 a month - 5
CraftMyPDF
CraftMyPDF is a cloud service for designing reusable document templates and generating PDFs or images from dynamic data.
Free planWebAPI7.5From $29 a month - 6
Text Control ReportingCloud
Text Control ReportingCloud is a Web API that creates documents by combining Microsoft Word-compatible templates with JSON data sent over HTTP.
AndroidiOSWebAPI7.1From $39 a month - 7
Documint
Documint turns data into formatted documents, including proposals, contracts, invoices, and reports.
WebAPI7.0From $39 a month - 8
Docmosis
Docmosis generates documents from Microsoft Word and LibreOffice Writer templates, with output available as PDF, DOCX, ODT, or TXT.
WebAPILinuxSelf-hosted6.9From $49 a month - 9
PDF Generator API
PDF Generator API automates PDF creation from data and reusable document templates.
WebAPISelf-hosted6.8From €80 a year - 10
YAMM
YAMM is a mail merge tool for Gmail and Google Sheets, available as an extension and on the web.
Free planWebExtension6.8From $25 a year - 11
Formstack Documents
Formstack Documents is a cloud document-generation service for turning business data into documents such as proposals, contracts, invoices, and reports.
WebAPI6.7From $31.99 a month - 12
APITemplate.io
APITemplate.io is a cloud-based web service for generating PDFs and images from templates or supplied content.
Free planWeb6.6From $19 a month - 13
G Merge Plus
G Merge Plus is a web tool for creating personalized documents and email campaigns using Google Sheets data.
Free planWeb6.6From $72 a year - 14
Docupilot
Docupilot creates documents by combining intelligent templates with data, then can send the results by email or to other applications.
WebAPI6.5From $29 a month - 15
GMass
GMass sends newsletters, announcements, cold campaigns, and transactional email from inside Gmail through an extension and the web.
WebExtension6.5From $349 a year - 16
PlainMerge
PlainMerge creates personalized PDF files by combining a PDF template with rows from Excel-compatible spreadsheets.
WebLinuxmacOSWindows6.5$59 one-time - 17
EDocGen
EDocGen is a no-code document-generation platform with a REST API for turning templates and data into files.
WebAPISelf-hosted6.4From $199 a month - 18
Nintex DocGen
Nintex DocGen for Salesforce is paid web software that merges Salesforce data into document templates and delivers generated files.
WebAPI6.4 - 19
Plumsail Documents
Plumsail Documents is a cloud service for generating, converting, protecting, and delivering business documents from reusable templates.
WebAPI6.2 - 20
BetterMerge
BetterMerge sends personalized mail merge campaigns from Gmail using contacts and fields in Google Sheets.
Free planWebExtension6.1Free plan - 21
Mail Merge Toolkit
Windows6.1From $2.50 a year - 22
Windward Core
Windward Core is an embedded document-generation product for applications, combining a template Designer with an Engine.
APILinuxSelf-hostedWindows6.1 - 23
Mergo
Mergo is a Google Sheets and Gmail mail merge add-on for sending personalized email campaigns.
Free planWeb6.0Free plan - 24
Adobe Document Generation API
Free planWeb5.9Free plan - 25
DocuSign Gen
Web5.3From $20 a month