What is causing the error message "Recipient has too many recent signup requests" when posting on Webflow?

The "Recipient has too many recent signup requests" error in Webflow often appears during interactions involving email-based actions, like form submissions tied to user authentication or email invites. It originates from rate limiting, usually on Webflow’s backend or an integrated service like Memberstack, Mailchimp, or Firebase.

1. Understand the Source of the Error

• The error typically applies to email-based submissions where a verification code, magic link, or invite is being emailed repeatedly.
• The “recipient” refers to the email address you're trying to send to.
• It may originate from Webflow’s logic-based email action, an external script, or an integration like Firebase Authentication.

2. Causes of the Error

• Too many signup or form submissions in a short period to the same email, triggering rate limits.
• Bot-submitted forms or scripted testing could create excessive traffic.
• Systems like Firebase or Auth0 will enforce strict rate limits per email to discourage abuse.

3. How to Fix It

• Wait and retry – Most rate limits reset after 15 minutes to an hour.
• Throttle submissions – Add logic (e.g., disable button after click) to prevent multiple fast form entries.
• Add Google reCAPTCHA to your form via Webflow’s native form settings to reduce bot traffic.
• If using Memberstack or Firebase, check their dashboard or documentation for rate-limiting details. You may need to implement retries, delays, or custom error messages.
• Avoid using test emails repeatedly (like test@example.com) across multiple testing sessions.

Summary

The "Recipient has too many recent signup requests" error is caused by excessive email-based requests to a single address, often due to form abuse or too many retry attempts. Add request throttling and reCAPTCHA protection to mitigate the issue and wait until the rate limit resets before retrying.