Steps to reproduce:

1. I have set the email event messages to HTML format...
2. Then have created an HTML test template and added there links to Zabbix sites (it was needed to play with it,m that it will use the login credentials)...
3. Creating event to test the email events...
4. Click on longer links...

Result:
See screenshot for the 3 ling in HTML emails...
When I click on the links, I dont know why, it isnt get a whole link, but only a part of it and then Zabbix can't follow the longer links and show the asked page (when I give the link directly to web browser, then is shoe corectly)...

Use links:
[http://IP/zabbix/history.php?action=showgraph&itemids[]=63205|http://ip/zabbix/history.php?action=showgraph&itemids[]=63205]
this one is show correctly.

This one not:
[http://IP/zabbix/index.php?name=user&password=passwd&enter=Sign%20in&request=history.php?action=showgraph&itemids[]=63205|http://ip/zabbix/index.php?name=user&password=passwd&enter=Sign%20in&request=history.php?action=showgraph&itemids[]=63205]
while I receive only a page without any content while it will remove me this part of the link:

&itemids[]=63205

The same is with links to images which are used in HTML emails...
Expected:
When I use the links (all) to Zabbix sites in email, that the link will be show corectly....
The same will be great to have with links to pictures...