We are seriously considering leaving VirginMedia for an alternative provider.
Whether you leave VM or not I would strongly suggest that the best step you could take would be to move over to using an email service from a dedicated email provider who is not linked to any internet service provider. There are lots to choose from, see here for some ideas https://www.lifewire.com/best-free-email-accounts
VM's email service is a very basic product offered as freebie for their customers if they who want to use it. All the email services mentioned in the link offer more security, better support and are just generally more reliable than VM.
In truth, email is not high on VM's priorities and your own experience shows that. In my view, sticking with VM email simply because it is "free" is a bad mistake. 😉
Of curse if you do leave VM you will lose your VM email accounts after 90 days anyway as is set out in their terms and conditions, so all the more reason for setting up a new email account now.
For the record, I practise what I preach. I have been with VM and it's predecessors for many years and I am very happy with their broadband and TV service but I have never used their email as my main email account.
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