MobileRead Forums - View Single Post - Calibre can't "Send-to-Kindle E-Mail"

JimReid · 01-09-2022, 11:06 AM

I recently had to reload my Windows 10 machine. Every time i do something that required a reinstall of Calibre I can't get it to send to my kindle. I have used the same 'send to kindle' address for years and setup the GMX email server so as not having to go through comcast. I still get 'invalid authorization' from the comcast server!! I don't understand how comcast comes into the process if I'm sending from a GMX server to my Kindle.com address. Does Calibre go through my personal email (which is comcast) and if so where does it get the address/password? It apoears that is what is failing.

This is the message:
Traceback (most recent call last):
File "calibre\gui2\wizard\send_email.py", line 204, in test_email_settings
File "calibre\utils\smtp.py", line 180, in sendmail
File "smtplib.py", line 734, in login
File "smtplib.py", line 723, in login
File "smtplib.py", line 646, in auth
smtplib.SMTPAuthenticationError: (535, b'Authentication credentials invalid')

01-09-2022, 11:06 AM	#44
JimReid Enthusiast Posts: 26 Karma: 10 Join Date: Jan 2016 Location: Williamstown, NJ Device: Kindle Paperwhite	Same problem over and over I recently had to reload my Windows 10 machine. Every time i do something that required a reinstall of Calibre I can't get it to send to my kindle. I have used the same 'send to kindle' address for years and setup the GMX email server so as not having to go through comcast. I still get 'invalid authorization' from the comcast server!! I don't understand how comcast comes into the process if I'm sending from a GMX server to my Kindle.com address. Does Calibre go through my personal email (which is comcast) and if so where does it get the address/password? It apoears that is what is failing. This is the message: Traceback (most recent call last): File "calibre\gui2\wizard\send_email.py", line 204, in test_email_settings File "calibre\utils\smtp.py", line 180, in sendmail File "smtplib.py", line 734, in login File "smtplib.py", line 723, in login File "smtplib.py", line 646, in auth smtplib.SMTPAuthenticationError: (535, b'Authentication credentials invalid')