vtext now taking 4+ hours to deliver text msg

EMISEI52

I use @vtext.com to email text msgs to my phone and it's been working reliably for months.  However, starting about a week ago, messages began taking a very long time to be delivered.  Previously I'd get a msg a few seconds after it was send but now it's usually taking over 4 hours.

deloused

Does it occur when sending from multiple email provider types? When experiencing the delay does your phone show good cellular signal? Are the texts containing less than 140 characters including the sending email address?