I use Thunderbird as an email client.
I have noticed a strange thing. My connection speed 10Mbps and it works ok with Firefox and downloading.
But when I download my emails, speed is much slower. Around 2 Mbps, so 5x slower.
With just plain text it does not matter, but when attachments come, then it matters?
I have asked my email provider if they save some restrictions, but he says ‘none’.
Any clue to solve this mystery?