# How to Add Input Validation to monday.com Forms (Email, Phone, Date, Custom Regex) Canonical: https://www.taskrhino.ca/en-us/monday-com-forms/input-validation/ > On Standard, monday.com WorkForms only documents required-field checks. See what data validations add on Pro and Enterprise, plus third-party options. Published: 2026-02-23 Updated: 2026-10-29 Author: Rakesh Patel Categories: BoardBridge **Key takeaways** - On Standard, the only documented WorkForms check is required fields; monday.com doesn’t document a format check for Email questions. - On Pro and Enterprise, board data validations apply to WorkForms submissions when the relevant columns are in the form. - Data validation rules cover limits such as a minimum number or dates from a set date, not phone formats or custom patterns. - Third-party builders such as JotForm and Fillout add validation; Fillout can also update existing monday.com items. - BoardBridge forms update existing items through a unique URL per item; ask about its validation options before relying on it. Someone submits your intake form with “555-1234” as their phone number. Another types “jon@gmial.con” as their email. A third leaves the date field blank — and your automation quietly breaks downstream because it expected a value. On Standard, the [monday.com form builder](https://www.taskrhino.ca/en-us/monday-com-forms/) accepts all of it. No error, no rejection, no warning. If you’ve run any kind of external form through monday.com, you know the problem. The platform’s built-in form builder only validates input on Pro and Enterprise, through board data validations — on Standard it trusts that your respondents will fill things in correctly. Spoiler: they won’t. This guide covers what monday.com does (and doesn’t) offer for form field validation rules, and the practical options for adding real validation to email, phone, date, and custom-format fields. For a broader look at what WorkForms can’t do, see our [monday.com WorkForms limitations overview](https://www.taskrhino.ca/en-us/monday-com-forms/workforms-limitations/). ## What “Form Field Validation” Actually Means Definition **Data validations:** monday.com rules on board columns (Pro and Enterprise) that block entries breaking them, in boards, WorkForms, automations and the API. Before getting into specifics, it’s worth separating two things that often get confused: **Board-level data validations** — monday.com’s data validation rules for board columns ([Pro and Enterprise](https://www.taskrhino.ca/en-us/monday-com-forms/features-by-plan/); the help article dates from September 2025) apply when someone edits an item on the board — and to WorkForms submissions, as long as the relevant columns are in the form ([monday.com Help Center](https://support.monday.com/hc/en-us/articles/29863034416786)). You can set rules like “the Numbers column must be over a specific amount” or “the Date column only accepts dates from a set date.” Relative rules such as “date is not yesterday” aren’t supported. These are useful for keeping board data clean when your own team is entering data. **Form input validation** — Rules that run when an external person submits a WorkForm. This is what most people want. On Pro and Enterprise, monday.com covers it through those same board rules; on Standard it doesn’t have it. Board validations do reach your forms: the rules still apply to WorkForms submissions as long as the relevant columns are present in the form. What they don’t give you is validation on the Standard plan. ## What monday.com WorkForms Actually Validates Short answer: on Standard, very little. Without board data validations, here’s what WorkForms gives you: 1. **Required fields** — You can mark a field as required. If a user leaves it blank, the form won’t submit. That’s it. 2. **Email questions** — An Email question maps to an Email column. monday.com doesn’t document a format check for it, so don’t count on one. On Standard, that’s the entire validation surface of WorkForms. No phone number format checking. No date range restrictions. No minimum/maximum text length. No pattern matching. No custom regex. Any text accepted in any text field. It’s one of the most quietly damaging gaps in WorkForms, because the cost doesn’t show up immediately. It shows up later, when you’re cleaning up a board full of malformed data or debugging an automation that choked on an invalid input. ## Why This Matters in Practice Here’s where bad form input causes real problems: **Phone numbers.** If your workflow sends an SMS or routes a call based on a phone field, you need a valid number. On Standard there’s no rule for a phone number’s format or length, so “1234” goes through as readily as “+1 (416) 555-0199”. Only one of those will actually work in a downstream automation. **Email addresses.** Your email automation sends a confirmation to whatever lands in the email field. If someone mistypes the domain (“sarah@gmial.com”), the email bounces silently. The submitter never gets their confirmation. You never know. **Dates.** Date pickers handle format correctly, but on Standard WorkForms doesn’t let you set a range. “Please select your project start date” gets answered with a date in 2019 — a year before your company existed. No warning. The item lands on your board with a nonsensical start date. **Reference numbers, IDs, codes.** If you’re collecting purchase order numbers, employee IDs, or voucher codes, there’s no way to enforce a format. Free-text fields accept anything. The downstream cost — data cleanup, failed automations, bad emails, manual review — is real and ongoing. **Stop Creating Duplicates** BoardBridge forms update existing items — no Enterprise plan, no workarounds, no duplicates. [See It In Action](https://www.taskrhino.ca/en-us/contact-us/) ## Option 1: Workarounds Within WorkForms If you need to stay within native monday.com, here’s what’s actually possible: ### Use dropdown fields instead of text fields TaskRhino tip Where answers come from a known list (countries, months, service types), use a dropdown so respondents can’t type a wrong value. The most reliable way to constrain input is to not let people type at all. Replace free-text phone fields with a “Country” dropdown + a “Local Number” text field with a character limit note. Replace open date fields with dropdowns for month/year combinations. It’s not elegant, but it removes ambiguity. **Limitation:** For anything that needs free input (actual phone numbers, actual email addresses), you can’t replace with a dropdown. ### Add instructional text to field descriptions WorkForms lets you add a description under each field. Use this to spell out the expected format: “Please enter in the format: +1 (XXX) XXX-XXXX.” This reduces errors but doesn’t prevent them. ### Use automation to flag bad submissions post-entry After a form submission lands on your board, you can have an automation notify the board owner so someone reviews key columns (email, phone) before the item moves on. This is reactive, not preventive, but it catches obvious errors for manual follow-up. **The honest assessment:** These workarounds reduce bad input but don’t eliminate it. If you’re running high-volume forms or automations where data quality matters, you’ll keep fighting this. ## Option 2: Use a Third-Party Form Builder Key stat 100 submissions a month on JotForm’s free plan, across up to 5 forms. Several apps offer monday.com integrations with proper validation: - **JotForm** — Has email validation, phone formatting and date range limits on any plan. Connects to monday.com via integration to create items. Free up to 5 forms / 100 submissions per month. - **Fillout** — Offers validation logic and conditional rules. Integrates with monday.com and can update existing items. Free up to 1,000 submissions per month. - **Typeform** — Has field validation on paid plans and a monday.com integration. These are good options if form validation is your primary need and you’re building new-item forms. The gap is that JotForm and Typeform follow the same model as WorkForms — they create new items; Fillout is the exception, with update forms ([Fillout](https://www.fillout.com/help/monday-update)). If you need a form to write back to an item that already exists on your board (a vendor updating their contract details, a client filling in project specs for a deal that’s already in flight), these tools hit the same wall. ## Option 3: BoardBridge Forms **BoardBridge — Form & Workflow Automation for monday.com** was built for gaps that WorkForms leaves open: forms that update existing items through a unique URL per item, and [AND/OR conditional logic with 5 comparison types](https://www.taskrhino.ca/en-us/monday-com-forms/conditional-logic-without-enterprise/) on any monday.com plan. Validation rules aren’t in its published feature list, so [ask us about validation options](https://www.taskrhino.ca/en-us/contact-us/) before you rely on it for format checks. On Pro and Enterprise, monday.com applies board data validations to API writes as well ([monday.com Help Center](https://support.monday.com/hc/en-us/articles/29863034416786-Data-validations)), so those rules still check what an API-based tool writes. BoardBridge’s API calls count toward monday.com’s daily API call limit: 200 a day on Free, 1,000 on Basic and Standard, 10,000 on Pro and 25,000 on Enterprise ([monday.com developer docs](https://developer.monday.com/api-reference/docs/rate-limits)). **See How BoardBridge Handles Form Updates** Book a free demo to see BoardBridge solve this exact problem — live, with your data. [Book a Free Demo](https://www.taskrhino.ca/en-us/contact-us/) ## Example: Event Vendor Intake Form Take a production company that sends intake forms to vendors. The form collects: - Vendor company name (required, min 2 characters) - Primary contact email (required, email format validation) - Cell phone (required, phone format validation) - GST/HST registration number (required, regex: `^\d{9}RT\d{4}$` — the Canadian tax ID format) - Availability date (required, date min: today’s date — won’t accept past dates) - Quote amount (required, min value: $1) Here’s what each option covers. On Pro and Enterprise, data validations can require a quote amount over $1 and an availability date from a set date onward. The email, phone and GST/HST formats need a form builder with pattern checks, or a review step after submission. Because BoardBridge forms can [update existing items](https://www.taskrhino.ca/en-us/monday-com-forms/update-existing-items/) (not just create new ones), the vendor’s submission can go directly to their pre-existing item on the board — no duplicate records, no manual matching. ## Which Option Is Right for Your Situation | Situation | Best Option | | --- | --- | | You need basic format guidance, low stakes | WorkForms field descriptions + required fields | | You need number or date limits | Data validations on Pro or Enterprise | | You need format checks (phone, tax IDs, codes) + you’re creating new items | A third-party form builder with pattern validation | | You need to update existing items | BoardBridge forms or Fillout update forms; board data validations still apply on Pro and Enterprise | ## The Bottom Line On Standard, monday.com WorkForms barely validates form input: it marks fields as required. On Pro and Enterprise, board data validations also apply to form submissions. For teams running external forms where data quality actually matters, that’s a real gap. The practical path depends on what else you need. Third-party form builders add validation but typically still follow the create-new-items model. BoardBridge adds the core capability that WorkForms still lacks: forms that write to existing board items rather than creating new ones. If your form data is feeding automations, emails, or downstream systems, bad input costs more than the time it takes to fix the source problem. **BoardBridge by TaskRhino handles conditional logic and item updates out of the box.** [Book a free 30-minute demo](https://www.taskrhino.ca/en-us/contact-us/) to see it running against your actual board setup. *Related reading:* - [monday.com WorkForms limitations — what you can’t do natively](https://www.taskrhino.ca/en-us/monday-com-forms/workforms-limitations/) - [monday.com form conditional logic guide](https://www.taskrhino.ca/en-us/monday-com-forms/conditional-logic-without-enterprise/) - [Best monday.com form alternatives (2026)](https://www.taskrhino.ca/en-us/monday-com-forms/alternatives/) - [Create custom WorkForms](https://www.taskrhino.ca/en-us/monday-com-forms/creating-workforms/) step by step - [Form redirect after submission](https://www.taskrhino.ca/en-us/monday-com-forms/redirect-after-submission/) - [monday.com form save as draft and continue later](https://www.taskrhino.ca/en-us/monday-com-forms/save-draft/) **Need Help With Your monday.com Setup?** TaskRhino has implemented monday.com for 110+ teams. Get a free consultation. [Schedule Free Consultation](https://www.taskrhino.ca/en-us/contact-us/) ## Frequently Asked Questions **How to implement input validation for an event vendor intake form handling emails, phones, and custom codes?** ### List what each field needs: email format, a valid phone number, a code pattern, a future date. On Standard, the only documented WorkForms check is required fields, so typos like jon@gmial.com and short phone numbers get through. On Pro and Enterprise, board data validations add number and date limits to form submissions. For phone and code formats, use a form builder with pattern checks. BoardBridge forms can update the vendor’s existing item; ask us about validation options. **How can I enforce phone number validation in monday.com WorkForms since native support is limited?** ### On Standard, the only documented WorkForms check is required fields, so a short entry like 555-1234 goes through. Data validations (Pro and Enterprise) cover limits such as numbers and dates, not phone formats. Use a third-party form builder with phone formatting, such as JotForm’s phone field, and spell out the format in the field description. **What’s the best workaround for custom regex validation on monday.com forms right now?** ### Native WorkForms has no custom regex: its documented checks are required fields and, on Pro and Enterprise, board data validations for limits such as numbers and dates. For pattern checks, use a third-party form builder that supports them, or check values after submission and follow up. **Will monday.com’s new Data Validations feature solve WorkForms input validation issues like invalid dates?** ### Data validations (Pro and Enterprise) apply board column rules, including conditional rules, to WorkForms submissions as long as the relevant columns are in the form; a Date rule can only accept dates from a set date. Relative rules such as “date is not yesterday” aren’t supported, and a conditional rule doesn’t work when its “if” question appears but its “then” question is hidden. **How to validate email beyond basic checks in monday.com intake forms without third-party tools?** ### monday.com doesn’t document a format check for a WorkForms Email question, and nothing catches typos such as jon@gmial.com. Without third-party tools, reduce errors with a clear field description and an automated confirmation email to the address given: a bounce flags a bad address. **Can I add date range validation to monday.com WorkForms for event registration forms?** ### On Pro and Enterprise, yes: a data validation rule on the Date column (only dates from a set date onward) applies to form submissions when that column is in the form. On Standard, WorkForms has no date range setting, so use the field description and check dates after submission. **How does BoardBridge compare to native WorkForms for form validation in existing board items?** ### WorkForms creates new items and, on Standard, validates only required fields (board data validations on Pro and Enterprise). BoardBridge forms update existing items through a unique URL per item, and on Pro and Enterprise monday.com’s board data validations also apply to API writes. Ask us about BoardBridge’s own validation options.