I heard that pst-files can grow as large as 50GB in size but also heard that issues will occur when it grows beyond 2GB.

My guess is that the difference is a technical limit versus a recommended limit.

Currently, my pst-file is reaching the 2GB and I wonder what I should do. Obviously, I do not want to run into issues but I prefer to keep my mailbox in a single pst-file rather than to create many little ones.

Which maximum pst-file size would you recommend?