Thunderbird via Roadrunner email acct is not delivering emails for up to 8 hours to certain Verizon accounts. What is up with this? It is very difficult to monitor a very sick brother in another state when emails are not being delivered in a timely manner. Have spoken with Spectrum/Roadrunner and sent message directly from Spectrum's web email app per their troubleshooting hotline. No joy on the email deliver either via Spectrum or Thunderbird.