Despite the fact that I have been using Gmail since the beginning of 2004 and it has never let me down, nevertheless, I regularly had the idea to make a backup for storing locally. And this despite the fact that locally I lost all the data of the entire PC 4 times. Together with the backup of the mailbox on Gmail in the size of 800Mb :) If you still want to make such a backup yourself, then choose for yourself the most convenient method listed by the blog MakeUseOf.com .
MailStore is a utility for Windows that allows you to make backups not only from online mailboxes like Gmail, but also all those that support mail unloading via POP or IMAP protocol. Backup can also be performed from some mail programs, including Outlook, Mozilla Thunderbird, Windows Mail and others. The program creates a single archive through which you can search (even by the contents of attachments), as well as find and delete duplicate attachments.
GmailUploader is an online service that allows you to send your mail data to Gmail, for example, to move to this wonderful service.
Amic Email Backup — saves and restores on demand your profile settings, emails, address book, message filters, signatures, lists of blocked recipients, etc. in such mail programs: MS Outlook, MS Outlook Express, Eudora, Pegasus, The Bat!, PocoMail, Netscape Messenger, Opera Mail and Incredimail.
And how do you backup your email clients and online services?