Be aware that the old email server might have been torn down without warning, or seized by the NSA or other such agency, in which case the account is a black hole. I had my 'private' account at such a service, when the NSA seized it, I had no end of grief with banks, local government, public utilities etc etc.
Because I couldn't respond to the change email address confirmation message, sent to what was now an NSA black hole, I had to supply stat decs to banks etc so they would change my email addy manually,. Paypal mail is still a problem for me because of that.
BR
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