Postosha setup and email help
Connect your first account, troubleshoot receiving or sending, or find a guide for a specific task. Your email stays with your existing provider.
Connect your first account
Set up Postosha and connect your first email accountYou need an existing mailbox with compatible IMAP/SMTP access. There is no separate Postosha account to create and no need to move your address to another provider.Gmail in a desktop email client: app passwords and IMAPGmail access depends on your account’s sign-in policy. Do not assume that your ordinary Google password or a Google sign-in button will work in every desktop app.Connect custom-domain email with IMAP and SMTPPostosha connects an existing domain mailbox to compatible IMAP/SMTP servers. It does not register a domain or provide email hosting.Postosha cannot receive or send emailFirst identify whether sign-in, IMAP receiving or SMTP sending is failing. Incoming and outgoing connections have separate settings.
Features
Find an email by sender, subject or datePostosha searches the mail server in the current folder of your selected accounts. Use the advanced form or type search operators.Move Postosha email accounts to a new computerExport selected account connections to a file protected by a separate password. This is not a full backup of the application.Local email storage, offline reading and cache cleanupPostosha caches downloaded messages and attachments on your computer. Original mail remains with your provider. A cache is not a complete mailbox backup.
Choosing & switching
Postosha as an Outlook alternative for everyday emailFor compatible IMAP/SMTP accounts, Postosha offers multiple mailboxes, templates, signatures and reminders. Whether you can switch depends on your provider and organisational needs.Replace Windows Mail with Postosha for compatible accountsMicrosoft ended support for Windows Mail, Calendar and People on 31 December 2024. Postosha is an option to try for compatible IMAP/SMTP email accounts.Postosha and Thunderbird: what to check before switchingBoth apps handle multiple mailboxes. Before switching, check how your accounts sign in and which tools you need, such as templates, a calendar or add-ons.
Setup & help
Ready to connect your email?
Keep your existing address and email provider.
Official installer from postosha.com. After installation, follow the guide to connect your first account.