Sending messages has always been a weak link in TSTM services, mostly because we depend on an external service to deliver the messages. Sometimes, thousands of mails are sent without issues but some other times, it just stops sending for no apparent reasons. Sending messages in time is very important for teams, such as during inclement weather. If you found TSTM is not sending messages, there is a feature to assist you to send the message from your own mail client. TSTM provides you with a list of addresses that you can plug into your email software. Here is how to do it.
Go to admin menu Other->Send messages.
Select your recipient criteria and click the "Show recipients" button.
On the new page, at the upper right corner (above the Subject field), there is a link called "Email address list". Right mouse click on the link and copy the addresses.
Go to your own email software and in the To, CC or BCC field (your choice), paste the address list.
Type your message there and send it!
This works for both email and text messages.
Although this is not as convenient as directly typing messages and sending within TSTM, it should be a good workaround.