Send to Kindle Not Working? Try These 14 Fixes

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Send to Kindle Not Working

Send to Kindle eliminates the need for manually moving the files. So, when the Send to Kindle function is not working, it could become a slight inconvenience that you’d like to sort out immediately.

And that’s why we have provided in this article all the possible reasons why Send to Kindle is not working for you, and how to fix it.

Why is Send to Kindle Not Working?

As is the case with all our guides on Techzillo, we advise that you troubleshoot the problem using a step-by-step method.

Try the first solution, and if it doesn’t work for you, move to the next in the order that we have provided them, until you arrive at the solution that works for you.

1. The Book is Taking Longer Than Usual to Arrive

If you have been using the Send to Kindle feature, you are probably used to having your books arrive within minutes to your Kindle device. However, there are indeed occasions where it takes up to a couple of hours for your book to arrive on your Kindle device.

This may be because of server issues on Amazon or temporary internet connectivity issues. In other cases, it may that Amazon servers and the servers of the originating email client have communication problems at the time.

As at the time of writing this article, it had taken about 20 minutes for an OTP (one-time password) from Amazon to get to a Microsoft email address. So, go figure.

Fix – Wait Two Hours

Although this long delivery time is not common, it does happen. When you send a book to your Kindle and it does not come within the normal timeframe, it is very important to wait at least an hour and hopefully not more than two hours. This will save you the hassle of trying several fixes when a mere lag was the problem; and of fixing what was not broken.

2. Your Kindle Device is Not Registered to Your Account

When you obtain a Kindle device, you need to have it registered to your account. There are several possible reasons why your Kindle device may not be registered to your account, including:

  • You bought a new Kindle device and are yet to register it to your Amazon account
  • The Kindle device was given to you by someone and the device is still registered to their own account, and your Amazon email address is not in the previous owner’s Approved Personal Document Email List
  • The Kindle device was purchased for you by someone. It will be registered to their Amazon account

These are the most common scenarios. Yours could be anything else. The bottom line is that if the Kindle device is not registered to your account, Send to Kindle will not work for you.

This is because when you use the Send to Kindle feature, you would have to enter your Kindle email address as the recipient. And this email address has to be linked to your Kindle device for the book to get to your device.

Fix – Register Your Kindle Device to Your Account

Please follow the steps below to register your Kindle device to your Amazon account:

If you purchased Kindle newly, please follow the onscreen instructions to register your device once your device is connected to the internet.

If your device is already set up, then

1. On the Home page, select the Menu icon

2. Select Settings

3. Select Your Account or Registration, depending on the Kindle device model

4. Enter your Amazon account email and password or choose to create one if you don’t have

5. Select Register

If your Kindle device is already registered to another person’s Amazon account, ask them to deregister the device from their account.

If you they do not wish to do so, they could add your Amazon account to the Approved Personal Document Email List using the steps below:

1. Go to Manage Your Content and Devices

2. At the Preferences tab, scroll down to Personal Document Settings

3. Under Approved Personal Document Email List, select Add a New Approved E-mail Address

4. Enter the email address and click on Add Address

Please note that this does not mean that you cannot use your Kindle device without having it registered to an Amazon email address. If you do not wish to register your Kindle device, you could transfer books to it from another source such as your PC, using a USB cord.

However, if you downloaded the book to your PC using an Amazon account, and transfer it to your unregistered Kindle via USB, you may not be able to open the book.

In all, once you have properly set up and registered your Kindle device, try to initiate Send to Kindle again and see if it works.

3. Your Kindle Isn’t Connected to The Internet

If your Kindle is properly registered and you have waited a good deal for your book to arrive without success, then it may be that your Kindle device is not connected to the internet.

As you may already know, your Kindle requires WIFI to access the store as well as receive books you have sent using Send to Kindle.

Fix – Confirm That Your Kindle Device is Connected to WIFI

1. Swipe down from the top of the Kindle device screen and select Wireless

2. At this stage, please confirm that Airplane mode is not On. It is common practice to put Kindle on Airplane mode to save battery while reading.

3. Toggle to turn on WIFI if it was off

4. If it was on, check to see that it is connected to the correct WIFI network

5. If not, tap on the correct network, enter the WIFI password and select Connect

6. After ensuring this connection, wait a while to see if your book arrives. However, if your Kindle device was already connected to the correct network, then try the next fix below.

Fix 2 – Reset WIFI Connection

If your kindle was connected to a WIFI router, please use the steps below to reset the WIFI connection:

1. Swipe down from the top of the Kindle device screen and select Wireless

2. Toggle to turn off WIFI

3. Unplug the router from power supply

4. Wait two minutes

5. Plug the router back in and wait for the Connected indicator to show

6. On your Kindle device, toggle to turn WIFI back on

7. Then ensure that it connects to the WIFI again. Then try to browse the internet with your Kindle device. If you are able to open pages successfully, please wait a bit and see if the book you sent to Kindle arrives.

If you are still unable to access the internet, please report the issue to your internet service provider. You could use a hotspot in the meanwhile to receive your book while waiting for your WIFI to get sorted.

4. You’ve Mistyped Your Email Address

If you had to type in your email address manually when you tried to use Send to Kindle, it is quite possible that you entered the wrong email address.

Unfortunately, when you enter a wrong email address, the system does not alert you to it. Therefore, you need to take good care that you enter the correct email address.

Fix – Retype Your Email Address

Simply go back to the platform on which you sent the book to Kindle. Initiate the Send to Kindle process again and take your time to check letter by letter that you are entering the correct email address.

If you are not sure of your Send to Kindle email address, please follow the steps below to confirm:

On a Computer:

1. Sign in at the Manage Content and Devices page on Amazon.

2. Click on the Devices tab

3. Select your Kindle device. You will see the email address assigned to your Kindle device.

On your Kindle Device:

1. On the Home page, select Menu icon or Swipe down from the top of the screen

2. Select Settings

3. Select Your Account

4. Under Send-to-Kindle Email, you will find your Send to Kindle email address

Once you are certain to have entered the correct email address, please wait a while for your book to arrive.

5. Your Email Address is Not Approved

You may recall that earlier, we talked about having your amazon account added in the Approved Personal Document E-mail List on Amazon to be able to receive books on your Kindle device.

That’s because, if the email you are trying to use on Send to Kindle is not in that list, it will not be found on the Amazon service for Kindle, and you will not receive the book you’re sending.

But there’s more. When you try to set up your device for Send to Kindle, Amazon sends a confirmation email to the email address you entered. The email comes with a Action Needed: Sign-in Attempt subject, and requires you to either Approve or Deny it.

Fix – Approve the Email Address You’re Using

If you are trying to use a particular email to set up your Send to Kindle, then you need to make sure that the email is on the Approved Personal Document E-mail List. Sign into your Amazon account preferences page and follow the steps we outlined earlier to add an email to the Approved list.

Fix 2 – Confirm Request

Access the email account that you’re trying to use to set up Send to Kindle and check for the confirmation email sent to it.

If you do not see the email in your inbox, please check your Junk folder. Also, some email apps like Microsoft Outlook have Focused and Other inboxes. Please check the Other inbox for the confirmation email.

Once received, click on Approve to approve your email to use Send to Kindle.

Fix 3 – Change Your Kindle Email in Amazon

If you no longer wish to use the email address assigned to your Kindle device, especially if it’s hard for you to remember, you could simply change the email address on Amazon using the steps below:

1. Sign in to your Amazon account preferences page

2. On the Preferences tab, scroll down and select Personal Document Settings

3. At Send to Kindle Email Settings, you will find your Send to Kindle email address listed next to your Kindle device

4. Select Edit and then enter the new email of your choice.

5. Now you can enter your new Send to Kindle email address when trying to send a book to your Kindle device

6. Too Many or Too Large Files

Amazon has placed restrictions on the number and size of documents you can send at once using Send to Kindle. This limitation is necessary to allow the email servers (which have limited capacity) to deliver your files successfully.

If your email does not get delivered to your Kindle device, it is possible that you are exceeding the file limits.

Fix – Reduce the Number and Size of Files You’re Sending

Here are the key file limitations when using Send to Kindle:

  • You cannot send more than 25 books or documents in a single email.
  • You cannot send attachments with a total size of more than 50 MB unless you use ZIP to compress the files. That is, if the original size of the file(s) is more than 50 MB, you could use a file compressor to make it 50MB or less. So that when it’s downloaded and extracted to Kindle format on your Kindle device, it regains its original size.

When you send a large number of books, they may take a long while to arrive. Amazon places a maximum time of 60 days. Of course, this is just T&C, but it’s worth knowing that you should not be bothered if delivery is not immediate.

7. Incompatible File Format

Amazon has also placed a restriction on the file formats you can send using Send to Kindle.

Some of it is due to security reasons as some file formats are known to be used to transfer viruses. But there’s also the need to support only files that are formatted using modern formats and technology.

So, if you’re trying to send books or documents on Send to Kindle, you need to be sure that you’re sending files that are formatted in Amazon’s allowed list.

Fix – Send Approved File Formats

Find below the full list of file formats approved by Amazon for use on Send to Kindle:

Note that in later 2022, Amazon will stop supporting sending files in .AZW and .MOBI format. The date for this is not known yet. However, you will still be able to open the existing .AZW and .MOBI files on your Kindle device even after support ends for sending such files.

Supported files formats as at the time of writing this article are as follows:

Using Email:

Text (.TXT)

JPEG (.JPEG, .JPG)

PDF (.PDF)

PNG (.PNG)

EPUB (.EPUB)

MOBI (.AZW, .MOBI)

Microsoft Word (.DOC, .DOCX)

HTML (.HTML, .HTM)

RTF (.RTF)

GIF (.GIF)

BMP (.BMP)

You may be aware that Send to Kindle did not originally support EPUB. But there was huge backlash from users, and that’s probably why the format is now supported. So, the supported file formats are subject to change but these are the latest supported ones as at writing.

Using Send to Kindle Desktop App:

  • Text (.TXT)
  • RTF (.RTF)
  • Images (.JPG, .JPEG, .PNG, .BMP, .GIF)
  • MOBI (.AZW, .MOBI)
  • Microsoft Word (.DOC, .DOCX)
  • PDF (.PDF)
  • HTML (.HTML, .HTM)

Using Kindle Mobile app:

  • PDF (.PDF)
  • Microsoft Word (.DOC, .DOCX)
  • HTML (.HTML, .HTM)
  • RTF (.RTF)
  • Text (.TXT)
  • Images (.JPG, .JPEG, .GIF, .PNG, .BMP)
  • MOBI (.MOBI, .AZW)

For Kindle on mobile app, support will start for sending EPUB files in later 2022.

Now that you are armed with details on the supported file formats for Send to Kindle, you can go ahead to send files in the formats that will get delivered to your device.

8. There’s A Bug on Kindle

At this point, you have covered just about everything that is preventing you from sending files successfully using Send to Kindle. Sometimes, the problem is that the Kindle app has developed a temporary glitch, or a more serious bug.

In that case, you would have to perform some technical actions in order to get Send to Kindle working again.

Fix – Force the Book to Your Kindle from the Content Library

There are a few occasions where the file you sent using Send to Kindle actually got delivered to your Kindle email address and is in your content library.

However, because of a glitch in the Kindle device (or Kindle app if you’re using a mobile device), the file you sent may not appear on your device.

What you need to do in this case, is to force the file to be delivered to your Kindle device or app. Please use the steps below to achieve that:

1. Go to your Content Library page on Amazon

2. Sign in if you’re asked to

3. Go to the book or document you want to force-deliver and click the three dots next to it

4. Select Deliver to Device

5. Then select your Kindle device or mobile device you want to deliver to.

Fix 2 – Restart Kindle

If you force the file from your content library to your device and it still doesn’t show up, then the glitch may be on the refresh function of the app. In that case, all you need to do is to restart your Kindle device or app and the files should appear.

Fix 3 – Add Text to Body of Email

Some users have reported that adding text to the body of the email has forced the files to get delivered to Kindle. The reason for this is that some email clients treat empty emails as possible spam or junk, similar to the way emails without subjects are treated sometimes.

So, if you have followed all the steps above and the file you sent still isn’t in your library, it is possible that it was rejected or classed as spam.

All you need to do is resend the email and add a simple text to it before sending. It has worked for others; it may work for you.

Fix 4 – Update Kindle

A couple of years ago, some updates from Amazon broke Kindle and made files to stop delivering. Users had to downgrade to an older version of Kindle firmware to get it working again.

However, Amazon has since fixed the bug with more recent updates, and so you need to ensure that your Kindle firmware is up to date when your Send to Kindle does not work.

To update Kindle:

1. On a computer, go to the Kindle updates download site to download the latest update for your particular Kindle device

2. Make sure your Kindle is powered on

3. Use the USB cord that comes with your Kindle to connect it to your PC

4. Copy the downloaded update file to the Kindle drive on your PC

5. Close the Kindle drive and eject it

6. Disconnect the USB cable from your PC and from your Kindle device

7. Swipe down from the top of the Kindle screen and select Settings

8. Tap the Menu icon and select Update Your Kindle

9. Select Ok to confirm

10. If successful, Your Kindle Is Updating should appear on the screen.

11. When this is done, Kindle will restart on its own.

After this, Amazon recommends that you plug in your Kindle to charge and leave it for about 9 hours (or overnight) so that your books can load and index properly.

Fix 5 – Contact Amazon Support

At this point, you have exhausted all the possible solutions known to users for resolving the issue of Send to Kindle not working. You would then have to contact Amazon and walk them through every step you have already taken to solve the problem. They should be able to provide further guidance on what next to do.

Fix 6 – Look in A Forum

The solutions we have provided in this article are mostly from personal experience and research. But some have been collated from experiences shared by other users.

So, you could also look in well-known Amazon user forums for similar problems to yours and find other solutions that may have worked for others.

Important Facts to Know When Using Send to Kindle

  • The sending and receiving email addresses have to be in the Approved Personal Document Email List
  • You can send from up to 15 approved email addresses using Send to Kindle
  • If you want the original file to be converted to Kindle format, enter Convert as the email subject
  • If you need to register your Kindle device but do not have internet access, you can call Amazon customer service on 1-866-216-1072 for US and Canada, or 1-206-266-2992 for international users. Then, provide them with the 16-digit serial number of your Kindle device.
  • To locate the serial number
  • Swipe down from the top of the screen of the Kindle device
  • Select Settings
  • Select Device Info. Your 16-digit device serial number will be displayed
Briley is a freelance writer and has been writing for over 10 years. The former journalist now content writer currently writes for Techzillo and focuses on consumer tech in general. His main interests include video games and consumer technology. He also writes for websites such as Lifewire, and Digital Trends. Read our Editorial Guidlines and Fact Checking process.

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