3 Formstack for Salesforce Limitations You Should Know in 2026

One of the most critical limitations of Formstack for Salesforce is how it handles file uploads and submission volumes.

• File Uploads: By default, the NativeCloud edition allows files up to 2.5 MB. With support, this can increase to 25 MB. For teams handling large attachments, this may cause bottlenecks.
• Submission Limits (24-hour): Submission limits vary by plan:
  • Group / Professional Edition: 5,000 submissions/day
  • Developer Edition: 15,000 submissions/day
  • Enterprise Edition: 1,000,000 submissions/day
• Field/Object Limits: While Formstack does not enforce a hard limit, it recommends a maximum of 400 fields per form to prevent mapping failures. Exceeding this can cause submission errors or fields to disappear.

For teams handling high volumes or large forms, MakeForms offers higher upload limits and better scalability, avoiding workflow interruptions.

Formstack relies heavily on API calls for Salesforce integration. Each form submission triggers a minimum of two API calls: one for authentication and one for creating the primary record.

Additional API calls occur for:

• Secondary objects added to a form
• Fields defined as upsert fields
• Prefilled forms submitted via Export Links
• Forms sent by email with prefill enabled

These extra calls can quickly add up, potentially exceeding your Salesforce API limits - especially in Group or Professional Editions, which may require explicit API access.

Practical impacts include:

• Increased risk of submission failures
• Mapping errors that result in "Failed" records
• Slower integration performance

Teams looking for more efficient Salesforce form automation tools may find MakeForms reduces API usage while maintaining robust integration capabilities.

Another common limitation is PDF generation. Formstack's PDFs do not include hidden or read-only fields, and layout customization is limited. This can hinder reporting or internal documentation workflows.

Data migration issues are also noteworthy: payment information and images do not transfer between Salesforce orgs. This limitation can cause delays when moving forms to new environments or during company mergers.

Formstack limits are not just technical, they also affect users and collaboration. Each account includes a set number of users. Once your user limit is reached:

• You cannot add more users
• Some team members may lose access to build or manage forms

How to resolve user limits:

• Upgrade your plan to increase user capacity
• Reassign existing users based on team priorities
• Purchase additional users if your plan allows

While Formstack is widely used, many teams are exploring Formstack alternatives for 2026. MakeForms no-code form builder offers:

• Higher file upload and submission limits
• Fewer API calls per submission
• Flexible PDF generation and full data migration support
• More cost-effective pricing and easier scalability
• No-code Salesforce form builder functionality for admins

For companies looking for the best Salesforce form generator 2026, MakeForms presents a simpler, faster, and more flexible option compared to Formstack.

To make Formstack for Salesforce limitations clearer, here's a side-by-side comparison of Formstack for Salesforce and MakeForms for Salesforce:

Key Takeaways for MakeForms for Salesforce:

1. MakeForms supports larger files, unlimited submissions, and more fields per form.
2. API usage is more efficient, reducing risk of Salesforce API errors.
3. Full PDF and data migration flexibility.
4. More storage, users, and customization options for similar or lower costs.
5. MakeForms provides better value for cost: more flexibility and features at a lower price.

While Formstack for Salesforce offers a range of features for form building and automation, its limitations, such as file upload caps, API constraints, submission limits, and restricted PDF/data migration, can create challenges for growing teams and complex workflows.

In contrast, MakeForms provides a more flexible, scalable, and cost-effective solution, with unlimited submissions, larger file uploads, efficient Salesforce integration, full customization options, and competitive pricing starting at $25/month annually.

If you're looking to streamline your Salesforce forms, reduce technical bottlenecks, and empower your team with a no-code solution, it's time to explore MakeForms. Start your free trial today or book a personalized demo to see how it can transform your form workflows.