Thank you Brian. All good now.

I upgraded to Win 10 when it became available and had no problems with Pegasus. Now, when I start the PC I find that all my Internet mail settings have been erased. Has anyone this problem or are there any suggestions.

Describe exactly what settings you are referring to when you say "Internet mail settings have been erased". 

All mail preferences and settings. All POP3 and SMTP settings had gone and had to be reset.

I am using Pegasus 4.7. This problem persisted over several days. Yesterday I reloaded 4.7 and it seems to have fixed the original problem.

What I do have now is a 'phantom' message in the ready to send queue which has no address or info. If I do enter an address etc the blank message just re-appears.

[quote user="GeorgeS"]What I do have now is a 'phantom' message in the ready to send queue which has no address or info. If I do enter an address etc the blank message just re-appears.[/quote]

To delete the empty queued message use a file explorer to delete any zero length .PMO, .PMX, or .PMW file from your HOME mail directory.  Do this with Pegasus Mail closed.

If you don't know where the HOME mail directory is use the Info button located in Help | About Pegasus Mail...