Do regular email clients provide pre-extraction of links, not images?

Question

Although I know that many email clients will preload or otherwise cache images. I do not know what prefetching regular links, for example<a href="somelinkhere">some link</a>

Is this the practice of some letters? If so, is there some kind of attribute relthat cannot be listed below that can be added to the link to prevent this?

Answer 1

Although I know that many email clients will pre-extract or otherwise cache images.

This is no longer real.

- - - , , , () .

, theres f.e. gmails, , , - gmail , , , , , .

, ,

gmail , : Google " ", , , , / - .

, - rel, , ?

rel= no-follow , , - ( robots.txt, meta element/rel) , , URL-.

, , //- , - .

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() , , URL- , -, , , = POST; - CSRF, .

Answer 2

2017 . Outlook (https://outlook.live.com/) , , URL Bing, Bing.

, login/pass- reset/etc .

( , , , BingPreview/1.0b URL- , "" )

Drupal : https://www.drupal.org/node/2828034

Answer 3

<a> , , , - , .

, , , , -, .

, , ,

<a href="linktomysite">linktomysite</a>

outlook07, outlook10, thunderbird apple mail (yosemite). wirehark, IP-,

Answer 4

- , , "-", . , .

(GET) "" , POST. , " " . "" , .

W3 , , GET ( ..).

http://www.w3schools.com/tags/ref_httpmethods.asp