Buttondown Confirmation Email Not Received
Quick answer
Subscribers do not become active until they click the confirmation link, so missing confirmations look like lost signups. Check spam, resend, and make sure the sending domain is verified.
Most likely fix: Ask the reader to check spam
How to fix it
Try these in order — the most common fix is first.
1. Ask the reader to check spam
- Search for the sender name
- Mark as not spam
Did this fix it?2. Fix authentication
- Verify SPF and DKIM for your sending domain
- Edit the confirmation template under Settings > Subscribing > Confirmation
Did this fix it?3. Use reminders
- Confirmation reminders are on by default for authors
- Leave them enabled so unconfirmed readers get a nudge
Did this fix it?
Symptoms
New signups stay unconfirmed and readers say they never got the email.
Why it happens
- Confirmation landed in spam or Promotions
- Unverified or misconfigured sending domain
- Typo in the address
- Re-adding a previously unsubscribed address now triggers confirmation via the API
This guide also covers
- buttondown confirmation email not received
- buttondown double opt in
- buttondown unconfirmed subscribers
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