Hello All,

Its been mentioned in  the Apex Guide that, we can keep track of the email i,e number of times the email has been opened etc.
We have this option  mail.setSaveAsActivity(true) that will create a activity in salesforce for specific record, but that does not show up how many times the email has been opened / not opened.

Can we someone let me know how we can achieve this..?

If your OST file is not opening then don’t worry, you can easy repair corrupt OST file and convert OST file into PST format by the manual tricks and OST to PST Converter tool.  As a Data Recovery expert I suggest all the users to read the article: How to remove errors in OST file and convert OST file into PST format? from where they will know the complete OST to PST conversion process guide which will help them to convert OST to PST in simple way.
 

OST to PST Converter tool provides preview option before saving the result to ensure perfect OST file conversion. In any doubtfull situation, user can have a look of all converted OST email items through preview option. For better results, Your system contains Pentium class processor, minimum 64 MB RAM, 50 MB space for software installation and have enough space to save the converted emails. The software is compaticle with all version of MS Outlook and Windows operating system. Visit: https://www.datarepairtools.com/ost-to-pst-converter.html

Thank You So much
Perfect Data Solutions
 

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OST to PST Converter software gives you best result and convert OST to PST file with all folders of OST file like :- inbox , outbox, sent items, and etc. This software works with advances methods and also export OST emails into EML,MSG and HTML format. The various features like saving in different file formats (DBX, MBOX, MSG, EML, RTF, HTML, and PDF) other than PST, adds features to the software. The software follows a very simple user interface with look and feel like your regular MS Outlook 2016, 2013, 2010, and 2007.

 

PST to MBOX Converter (http://www.mozesoft.com/outlook-pst-to-mbox-converter.html) for Mac tool to convert Outlook Emails and their attached files to Mac Mail. Free Online PST to Mac Mail Converter can easily online purchase from our website with safe and secure procedure. Additionally import Emails, Contacts, Calendar, Tasks, and Journals etc. from MS Outlook to Apple Mac Mail. - See more at: https://softcart.wordpress.com/outlook-pst-to-apple-mail-mbox-file/