Sending books via Email via "Connect/share"

mlambertson · 02-27-2026, 08:02 AM

New user here - one of my first actions in Calibre was to try to email a book via the "Connect/share" button. This popped up a panel for a new email address. I tried populating this with the information of one of my Kindle addresses.
The attempt to send the book failed - I don't recall the particular error.
At that point, I wanted to go back into that panel and try editing the information but going through the "Connect/share" button would not provide a means to edit it.
I finally found that going to "Preferences"->"Sharing"->"Sharing books by email" gets me to that panel where the email server info is displayed. I have not tried updating this yet but just wanted to put this out here in case anyone else is consequently having similar issues getting to the server info.

DNSB · 02-27-2026, 03:18 PM

If you used GMX as the sender, did you configure your GMX account to allow POP/IMAP?

mlambertson · 03-01-2026, 08:10 PM

Thanks for the reply. I did not try GMX but understand now that is what I should have tried. For now, I will probably just stick with sending via my main email independently of Calibre.

dunhill · 03-01-2026, 10:04 PM

Due to a problem, Hotmail and Gmail protocols are not working.

JSWolf · 03-08-2026, 02:14 PM

Quote:

Originally Posted by dunhill

Due to a problem, Hotmail and Gmail protocols are not working.

Do you know what the problem is?

dunhill · 03-08-2026, 08:13 PM

Quote:

Originally Posted by JSWolf

Do you know what the problem is?

The root of the problem: The end of "less secure apps"
Historically, Calibre used simple authentication (username and password). However, Google and Microsoft (Hotmail/Outlook) have disabled this access to protect users from brute-force attacks.

kovidgoyal · 03-09-2026, 01:41 AM

Quote:

Originally Posted by dunhill

The root of the problem: The end of "less secure apps"
Historically, Calibre used simple authentication (username and password). However, Google and Microsoft (Hotmail/Outlook) have disabled this access to protect users from brute-force attacks.

No they disabled SMTP so they can show their users more ads. Brute force protection is trivial to do with SMTP.

shalym · 03-20-2026, 12:59 PM

Quote:

Originally Posted by kovidgoyal

No they disabled SMTP so they can show their users more ads. Brute force protection is trivial to do with SMTP.

I don't understand...when did they disable SMTP? I'm using SMTP with 3 different google accounts right now, in 2 different apps. (Thunderbird on my PC and Blue Mail on my phone) The only time I ever access my gmail accounts through a web browser is if I am on a computer that is not my normal home computer.

Shari

kovidgoyal · 03-20-2026, 06:55 PM

https://manual.calibre-ebook.com/faq...-using-calibre

shalym · 03-21-2026, 12:28 AM

Quote:

Originally Posted by kovidgoyal

https://manual.calibre-ebook.com/faq...-using-calibre

Yup. I've read the manual. I'm just saying that SMTP is still being used by Google for gmail. It doesn't use port 25, but really...why would you? They use OAUTH for authentication, but that doesn't mean that they disabled SMTP.

It doesn't really matter to me anymore, because I no longer email books to Amazon from Calibre (or from anywhere else, actually) but I think that language matters.

Saying that the only way to access gmail is by using Google's website is incorrect...and it's easily proven that it's incorrect.

Shari

kovidgoyal · 03-21-2026, 01:49 AM

You cannot use Gmail SMTP without OAUTH. OAUTH is not part of the SMTP protocol. Ergo GMAIL does not support SMTP. The idea that I have to run a fucking browser to be able to send email, something I have been doing since before browsers existed is absurd. The language is absolutely precise and perfectly correct.

02-27-2026, 08:02 AM	#1
mlambertson Junior Member Posts: 3 Karma: 10 Join Date: Feb 2026 Device: Kindle	Sending books via Email via "Connect/share" New user here - one of my first actions in Calibre was to try to email a book via the "Connect/share" button. This popped up a panel for a new email address. I tried populating this with the information of one of my Kindle addresses. The attempt to send the book failed - I don't recall the particular error. At that point, I wanted to go back into that panel and try editing the information but going through the "Connect/share" button would not provide a means to edit it. I finally found that going to "Preferences"->"Sharing"->"Sharing books by email" gets me to that panel where the email server info is displayed. I have not tried updating this yet but just wanted to put this out here in case anyone else is consequently having similar issues getting to the server info.

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02-27-2026, 03:18 PM	#2
DNSB Bibliophagist Posts: 51,252 Karma: 179232776 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	If you used GMX as the sender, did you configure your GMX account to allow POP/IMAP?

03-01-2026, 08:10 PM	#3
mlambertson Junior Member Posts: 3 Karma: 10 Join Date: Feb 2026 Device: Kindle	Thanks for the reply. I did not try GMX but understand now that is what I should have tried. For now, I will probably just stick with sending via my main email independently of Calibre.

03-01-2026, 10:04 PM	#4
dunhill Wizard Posts: 1,103 Karma: 1084520 Join Date: Sep 2017 Location: Buenos Aires, Argentina Device: moon+ reader, kindle paperwhite	Due to a problem, Hotmail and Gmail protocols are not working.

03-20-2026, 06:55 PM	#9
kovidgoyal creator of calibre Posts: 46,194 Karma: 29626604 Join Date: Oct 2006 Location: Mumbai, India Device: Various	https://manual.calibre-ebook.com/faq...-using-calibre

03-21-2026, 01:49 AM	#11
kovidgoyal creator of calibre Posts: 46,194 Karma: 29626604 Join Date: Oct 2006 Location: Mumbai, India Device: Various	You cannot use Gmail SMTP without OAUTH. OAUTH is not part of the SMTP protocol. Ergo GMAIL does not support SMTP. The idea that I have to run a fucking browser to be able to send email, something I have been doing since before browsers existed is absurd. The language is absolutely precise and perfectly correct.

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