Every trap, with the date it was last checked.
Paste an error message to find the trap behind it, or filter by tool.
514 traps
- fg-0424AirtableVerified Oct 2026Airtable API calls are blocked or slowed to 2 per second partway through the month
Every request returns 429 until the workspace is upgraded or the monthly counter resets (Free plan, after the grace period)
verified 2026-10-15 · 0 confirmations
- fg-0423SendGridVerified Oct 2026SendGrid template shows & or ' instead of the ampersand or apostrophe
Delivered email shows Smith & Sons
verified 2026-10-15 · 0 confirmations
- fg-0422SendGridVerified Oct 2026SendGrid stops sending on an old free account and new signups get only a 60-day trial
Mail Send fails on an account that ran on the free plan for years
verified 2026-10-15 · 0 confirmations
- fg-0421SendGridVerified Oct 2026SendGrid returns 202 but a recipient never gets mail because the address is suppressed
202 Accepted, then a dropped event instead of delivered
verified 2026-10-15 · 0 confirmations
- fg-0420SendGridVerified Oct 2026SendGrid returns 200 instead of 202 and no email is delivered
Mail Send responds 200 OK, not 202 Accepted
verified 2026-10-15 · 0 confirmations
- fg-0419SendGridVerified Oct 2026SendGrid rejects scheduled emails with 'Scheduling more than 72 hours in advance is forbidden'
400 Scheduling more than 72 hours in advance is forbidden
verified 2026-10-15 · 0 confirmations
- fg-0418SendGridVerified Oct 2026SendGrid recipients see each other's addresses when the to field is an array
Every customer sees the full recipient list in To
verified 2026-10-15 · 0 confirmations
- fg-0417SendGridVerified Oct 2026sendgrid-python send() hangs forever when the SendGrid API stalls
Worker or request thread stuck inside sg.send(message)
verified 2026-10-15 · 0 confirmations
- fg-0416SendGridVerified Oct 2026SendGrid ignores the subject you pass when sending with a dynamic template
Email arrives with the template's subject, not the one in the request
verified 2026-10-15 · 0 confirmations
- fg-0415SendGridVerified Oct 2026SendGrid Event Webhook signature verification fails on real deliveries
verifySignature returns false for live events
verified 2026-10-15 · 0 confirmations
- fg-0414SendGridVerified Oct 2026SendGrid dynamic template placeholders render blank when the code uses substitutions
{{first_name}} renders empty in the delivered email
verified 2026-10-15 · 0 confirmations
- fg-0413SendGridVerified Oct 2026SendGrid 403 'The from address does not match a verified Sender Identity'
403 Forbidden: The from address does not match a verified Sender Identity
verified 2026-10-15 · 0 confirmations
- fg-0412ResendVerified Oct 2026Resend webhook verification throws even though the signing secret is correct
resend.webhooks.verify throws on every event
verified 2026-10-15 · 0 confirmations
- fg-0411ResendVerified Oct 2026Resend webhook endpoint gets disabled after repeated failures and events stop
Email from Resend saying the webhook endpoint was disabled
verified 2026-10-15 · 0 confirmations
- fg-0410ResendVerified Oct 2026Resend returns 429 rate_limit_exceeded when sending a list with Promise.all
429 rate_limit_exceeded: Too many requests. Please limit the number of requests per second.
verified 2026-10-15 · 0 confirmations
- fg-0409ResendVerified Oct 2026Resend returns 409 invalid_idempotent_request when a retry reuses the key
409 invalid_idempotent_request
verified 2026-10-15 · 0 confirmations
- fg-0408ResendVerified Oct 2026Resend returns 403 'You can only send testing emails to your own email address'
403 validation_error: You can only send testing emails to your own email address
verified 2026-10-15 · 0 confirmations
- fg-0407ResendVerified Oct 2026Resend rejects sends with 403 'The domain is not verified' right after adding DNS records
403 validation_error: The example.com domain is not verified. Please, add and verify your domain.
verified 2026-10-15 · 0 confirmations
- fg-0406ResendVerified Oct 2026Resend inline images with src=cid: show as broken or as plain attachments
img src=cid:logo renders as a broken image
verified 2026-10-15 · 0 confirmations
- fg-0405ResendVerified Oct 2026Resend free plan starts failing with daily_quota_exceeded well before 100 sends
429 daily_quota_exceeded: You have exceeded your daily email sending quota.
verified 2026-10-15 · 0 confirmations
- fg-0404ResendVerified Oct 2026Resend domain stays pending because the DNS host rewrote resend._domainkey or the send MX
Domain stuck in pending or failed for hours
verified 2026-10-15 · 0 confirmations
- fg-0402ResendVerified Oct 2026Resend Audiences calls and audienceId still work but are deprecated in favor of Segments
Docs and SDK types say segments where existing code says audiences
verified 2026-10-15 · 0 confirmations
- fg-0401ResendVerified Oct 2026Error: Cannot find module 'react-dom/server' when sending plain HTML with Resend
Error: Cannot find module 'react-dom/server'
verified 2026-10-15 · 0 confirmations
- fg-0400ResendVerified Oct 2026Email body shows [object Promise] after upgrading React Email
Recipients receive the literal text [object Promise]
verified 2026-10-15 · 0 confirmations