Formstack Documents vs G Merge Plus

Formstack Documents7.3Visit G Merge Plus6.9Visit

Higher score Formstack Documents #5 in Mail Merge Software 7.3/10 From $250/mo (annual) ✓ 1 of 2 features Visit Formstack

vs

G Merge Plus #8 in Mail Merge Software 6.9/10 Free plan · paid from $72/yr · 5-day trial Free plan✓ 1 of 2 features Visit G Merge Plus

• Formstack Documents fits best

  Large CRM-led document operations

• G Merge Plus fits best

  Google users merging email and documents

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Side by side

Feature	Formstack Documents 7.3/10 Visit ↗	G Merge Plus 6.9/10 Visit ↗
At a glance
Editor score	7.3	6.9
Ranking	#5 in Mail Merge Software	#8 in Mail Merge Software
Best for	Large CRM-led document operations	Google users merging email and documents
Pricing model	Paid	Free plan + paid
Starting price	$250/mo	Not published
Free plan	—	✓ (best)
Free trial	—	—
Deployment	Cloud	Cloud, Browser extension
Platforms	Web	Web
Support	Docs, Tickets	Tickets, Phone
Compliance	HIPAA, GDPR	GDPR
Integrations	300+ integrations	5 integrations
Built for	Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Formstack Documents 1/2 · G Merge Plus 1/2
Batch personalization	Not published	✓ (best)
API access	✓ (best)	Not published
Specs
Monthly merge limit	Not published	Not published
Data sources	Not published	Google Sheets
Output types	Not published	emails, PDFs, Google Docs, Google Sheets
Delivery channels	Not published	Both
Our review
Pros	CRM-driven generation with conditional and dynamic document content Bulk routing, multi-document generation, and an open REST API Word automation, e-signature integrations, and security controls	Combines Gmail email merges with PDF, Docs, and Sheets generation Supports scheduling, attachments, tracking, and unsubscribe handling Integrates with Gmail, Sheets, Docs, Drive, and Google Contacts
Cons	Starts at $250 per month with annual billing No free plan for evaluating the product Suite pricing includes Forms and Sign alongside Documents	The Free plan excludes document merge and tracking Paid plans are billed annually Team features start at the $480-per-year Team plan
Our verdict	Formstack Documents is a no-code document-generation and delivery tool for organizations automating personalized business documents. Teams can upload or create DOCX, PPTX, PDF, and CSV templates, populate them with data from forms, CRMs,… Read the review →	G Merge Plus is a Google Workspace add-on for individuals and teams that create personalized emails and documents from Google Sheets data. It sends campaigns through Gmail and can generate PDFs, Google Docs, or Google Sheets from… Read the review →

Strengths and trade-offs

• Formstack Documents — where it wins

  • CRM-driven generation with conditional and dynamic document content
  • Bulk routing, multi-document generation, and an open REST API
  • Word automation, e-signature integrations, and security controls

  Where it doesn't

  • Starts at $250 per month with annual billing
  • No free plan for evaluating the product
  • Suite pricing includes Forms and Sign alongside Documents

• G Merge Plus — where it wins

  • Combines Gmail email merges with PDF, Docs, and Sheets generation
  • Supports scheduling, attachments, tracking, and unsubscribe handling
  • Integrates with Gmail, Sheets, Docs, Drive, and Google Contacts

  Where it doesn't

  • The Free plan excludes document merge and tracking
  • Paid plans are billed annually
  • Team features start at the $480-per-year Team plan

• Formstack Documents7.3/10 · From $250/mo (annual)

  A CRM-ready document automation suite for large, data-driven operations.

  Visit FormstackFull verdict →
• G Merge Plus6.9/10 · Free plan · paid from $72/yr · 5-day trial

  A Google Workspace add-on for personalized email campaigns and document generation.

  Visit G Merge PlusFull verdict →