One thing that hasn’t been mentioned is the Mozilla email client, Thunderbird
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Can you explain “Thunderbird”? I have e-mail addresses at work, g-mail and aol mail.
Does Thunderbird use a unique @***?
Does Thunderbird route all my different mail addresses?
Thunderbird is an open source email client. For example, if you have a gmail account (xyz@gmail.com) you probably view your email via your web browser (web mail). A client is installed on your computer and it retrieves messages from your email provider and stores them on your computer.
I have about 7 email addresses on 3 different email services. The client is configured so that it collects email from each account and likewise sends from the any of the accounts.
If I disconnect from the internet I can read email, compose new messages, etc.