DocGen Guide 128 tools · prices checked 20 Oct 2026 Find my tool
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JSON API to email: 4 document generation tools

We list 4 tools that turn JSON sent to an API into an email. Our order puts Conga Composer, DocsAutomator and Xpertdoc at the top. Paid plans start at $19 a month with DocsAutomator.

Tools
4
With USD price
1, from $19
Free tier
0
Direct / via Zapier
4 / 0
Checked
20 Oct 2026
  1. 01
    Conga Composer Editor's pick conga.com

    Enterprise Salesforce document generation.

    Outputs PDF, DOCX, XLSX, PPTX, HTML, email Template Word Also reads Salesforce G2 4.4 (849)
    Not published
  2. 02
    DocsAutomator Editor's pick docsautomator.co

    Professional $19/mo yearly, $29 monthly.

    Outputs PDF, Google Docs, email Template Google Docs, Word, PDF form Also reads Airtable, Notion, Google Sheets, Google Forms +2
    $19 / mo, cheapest here
  3. 03
    Xpertdoc xpertdoc.com

    CCM and document generation with Microsoft Dynamics CRM connector.

    Outputs PDF, DOCX, email, e-sign documents Template Word G2 4.3 (26)
    On request
  4. 04
    Experlogix Document Automation experlogix.com

    Also Dynamics 365, SugarCRM, Power Platform.

    Outputs PDF, DOCX, XLSX, email, e-sign documents Template Word Also reads Salesforce
    On request

What differs for JSON API

Each one maps JSON API fields into a template and saves an email; 4 of the 4 build that template in Word. All 4 read JSON sent to an API without a Zapier, Make or n8n step in between. Your own code decides when to call the API, so a document can be built on any event.

None of the 4 has a free tier. When the output is an email, the most common use cases are contracts (4), invoices (3) and quotes (2). Prices were checked on 20 Oct 2026.

Nearby pages

Broader list: Document generation APIs (64 tools).

Related lists: JSON API to PDF (63 tools), JSON API to DOCX (29), JSON API to e-sign documents (16), JSON API to PPTX (11), Google Sheets to email (11), Salesforce to email (5), Excel to email (4), Google Forms to email (4).

How to generate PDFs from a JSON API: a step-by-step guide, updated 21 Oct 2026.

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