Cursor·FixdeployResendintermediate

Cursor Resend Emails Going To Spam On Launch

Quick Answer

How do I fix Cursor Resend Emails Going To Spam On Launch?

The app is sending from an unverified domain, missing DNS records, or using default sender addresses that do not build trust with mailbox providers. Resend is working, but deliverability is weak. Start with "Verify your sending domain in Resend" before making broader code changes.

Fix signals

What this answers: Why cursor resend emails going to spam on launch happens and what to change first.
Fastest move: Verify your sending domain in Resend
Use this page if: Emails are sent, but they land in spam

If this keeps happening

Open the next decision, not just the patch

Use these when the current fix is helpful, but the real answer is a better tool choice, a cleaner workflow layer, or a more trustworthy launch path.

Cursor review

Open this when the issue is making you decide whether a more code-first workflow is still the right long-term move.

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Lovable reviews

Open this when the bug is making you reconsider whether a faster generated path would reduce the operational overhead.

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Deploy hub

Open this when the fix is exposing a broader production handoff problem, not just one bug in the code.

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Tool picker

Open this when repeated failures are pushing the decision back up to the stack level.

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Firecrawl review

Open this when the app also needs live web data and the bigger stack question is no longer just about the coding tool.

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Quick Fix Summary

Most likely cause	The app is sending from an unverified domain, missing DNS records, or using default sender addresses that do not build trust with mailbox providers. Resend is working, but deliverability is weak.
Fastest fix	Verify your sending domain in Resend
Use this page if	Emails are sent, but they land in spam

You're in the right place if...

!Emails are sent, but they land in spam
!Gmail warns that the message looks suspicious
!Delivery works, but open rates are near zero

Why this happens

The app is sending from an unverified domain, missing DNS records, or using default sender addresses that do not build trust with mailbox providers. Resend is working, but deliverability is weak.

Fix

Verify your sending domain in Resend

Add the real production domain you want to send from and complete the DNS verification steps in Resend.

Use a domain-based sender address

Do not keep sending from a temporary onboarding address if this is a production workflow.

from: 'noreply@yourdomain.com'
reply_to: 'you@yourdomain.com'

Update the email templates in Cursor

Make sure the app uses the verified sender address consistently and sends clean transactional content.

Copy this prompt

Resend emails are reaching inboxes as spam.
Please update the email sending code to use a verified domain sender address, simplify the template markup, and avoid spammy subject lines.

Prevent this next time

Set up domain verification before launch, not after users start receiving transactional mail from a temporary sender.