How To Fix Calibre To Kindle Email Delivery Errors?

2025-07-14 15:20:28 364

4 Answers

Delilah
Delilah
2025-07-18 01:49:50
I’ve run into my fair share of email delivery issues. The first thing I always check is whether the email address I’m sending from is approved in Amazon’s 'Approved Personal Document Email List' under Kindle settings. If it’s not, add it there.

Another common culprit is the email subject line or attachment format. Make sure the subject is simple, like 'Convert,' and the file is in a Kindle-compatible format like MOBI or AZW3. Sometimes, ISPs block outgoing emails with attachments, so switching from your default email to a service like Gmail can help. Also, check your spam folder—Amazon’s servers might’ve redirected it there. If all else fails, restarting Calibre and re-converting the book file often resolves sneaky glitches.
Bryce
Bryce
2025-07-19 04:45:30
When my Calibre emails stopped reaching my Kindle, I discovered my ISP’s outgoing port 25 was blocked. Switching to port 587 with TLS in Calibre’s settings fixed it. Also, double-check that your Kindle’s email isn’t accidentally set to ‘@kindle.com’ instead of ‘@kindle.’
Emily
Emily
2025-07-19 07:11:46
I’ve learned that email delivery fails often come down to two things: file size or format. Kindle’s email service has a size limit (around 50MB), so compress larger files or split them. Also, older MOBI formats sometimes choke—convert to AZW3 or KFX instead. A lesser-known tip: if you’re using a custom domain email (like ProtonMail), Amazon’s filters might flag it. Stick to mainstream providers for reliability.
Owen
Owen
2025-07-20 15:21:10
Dealing with Calibre-to-Kindle email errors can be frustrating, but I’ve found a few tricks that usually work. First, verify your Kindle’s receiving email address—sometimes it changes if you update your Amazon account settings. Next, ensure Calibre’s 'Connect/share' email settings match your sending email exactly, including SMTP server details. I once spent hours troubleshooting only to realize I’d misspelled 'gmail.com.' Also, try sending a test email with a small PDF first to rule out file corruption. If the issue persists, Amazon’s Kindle support page has a handy troubleshooting checklist for server-side problems.
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