How many Pmail folders have you arranged? Depending on the the number of such folders and subfolders (and their content) within your Pmail folder tree, Pmail takes more time for startup (under W10). When starting Pmail it shows "locating folders - 25" also with me. It seems "25" is only the first step, where 25 folders have been read. My computer (W10 1909) needs around 11 seconds for hundrets of folders. But my computer is fitted with an fast SSD and connected by Gbit network to the server where the mails reside. But other users of mine have more than 1000 folders where Pmail needs about 20 to 30 seconds for the first start. But only for the first start of a day. Subsequent startups are very fast. It seems Windows is chaching the folder structure or folder content. I guess, you have to live with.