$Id: FAQ.Yahoo.txt,v 1.12 2021/05/04 11:04:51 gilles Exp gilles $

This document is also available online at
https://imapsync.lamiral.info/FAQ.d/
https://imapsync.lamiral.info/FAQ.d/FAQ.Yahoo.txt


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                     Imapsync tips for Yahoo.
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Questions answered in this FAQ are:

Q. Synchronizing from Yahoo to XXX

Q. Synchronizing from XXX to Yahoo

Now the questions again with their answers.

Some explanation about the options given later:

https://imapsync.lamiral.info/README
...
 --noabletosearch    : Makes --minage and --maxage options use the internal 
                       dates given by a FETCH imap command instead of the 
                       "Date:" header. Internal date is the arrival date 
                       in the mailbox.
                       --noabletosearch equals --noabletosearch1 --noabletosearch2

 --regexmess    reg  : Apply the whole regex to each message before transfer.
                       Example: 's/\000/ /g' # to replace null by space.
 --regexmess    reg  : and this one, etc.

I'm not sure anymore about the need of --noabletosearch with Yahoo, maybe
they fixed the issue about the standard imap searching command SEARCH
they didn't honor before.

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Q. Synchronizing from Yahoo to XXX

R. Use --host1 imap.mail.yahoo.com 

Example:

  ./imapsync \
    --host1 imap.mail.yahoo.com \
    --user1 Billy@yahoo.com \
    --password1 billysecreta \
    --host2 XXX \
    --user2 Billy@other.com \
    --password2 billysecretb \
    --noabletosearch 


You also need to go to Yahoo, security and enable 
"Allow less secure apps to login", 
otherwise the login will not work. 

To enable less secure apps to login:
  * Login to the Yahoo mail account,
  * click on the account name or the avatar and select "Account Info",
  * click on "Account security",
  * turn off "Two steps verification"
  * turn on "Allow apps that use less secure authentication".​

Thanks to Eugen Mayer for this last point.

Another solution:

  * Login to the Yahoo mail account,
  * click on the account name or the avatar and select "Account Info",
  * click on "Account security",
  * Turn on "Two-step verification"
  * Click on "Manage app passwords" and 
    generate a specific password for imapsync, 
	choose "Other app" at the bottom and type imapsync
    since it is not in the predefined apps.
  * Use this password with imapsync.

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Q. Synchronizing from XXX to Yahoo

R. Example:

  ./imapsync \
    --host1 XXX \
    --user1 Billy@other.com \
    --password1 billysecreta \
    --host2 imap.mail.yahoo.com \
    --user2 Billy@yahoo.com \
    --password2 billysecretb \
    --noabletosearch --regexmess "s{(?<![\n])\z}{\r\n}gxms"

You wonder why there is this ugly regex, what it does and where does it 
come from?

It's there to get rid of the errors 
"BAD [CLIENTBUG] Additional arguments found after last expected argument"
when copying some messages to Yahoo.
It adds a final \r\n on a message if a final \r\n is missing.
See https://github.com/imapsync/imapsync/issues/209

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