Messages in Windows Phone Link App Stuck Sending or Failed to Send
Step-by-step instructions (with pictures) on how to fix the problem when messages in your Windows Phone Link app are stuck in sending, or failed to send even after multiple retries, for both iPhone and Android.
iMessage failed to send
What do do when you see a "iMessage failed to send" message in Porterhouse, or a "Message Send Failure" or "Not Delivered" in your Mac Messages App
How to send text messages from your phone number on your Mac computer
How to send text messages from your phone number on your Mac computer, when you see text messages showing up as being sent from your email address instead of your phone number, or text messages to Android numbers are not being sent at all.
How to enable Text Message Forwarding (or SMS Forwarding) on your iPhone
How to enable Text Message Forwarding (or SMS Forwarding) on your iPhone, if you get an "iMessage failed to send" message on Porterhouse, or sending to Android phone numbers from your Mac doesn't work