I'm using gmail search feature using message ID.
It has some advanced search key called rfc822msgid, where you need to give your message id and it will search.
So I can search using this up to 16 results. If I'm giving more than 16 or so rfc822msgid then gmail does not able to search the mails.
If by chance your team know any solution for it. So scenario is we have our own indexed mails using limilabs and our own algorithm to search mails in gmail. So from any query we are getting messageIDs of all the mails that should be displayed on gmail.
Thanks,
Sarathi