The Editor's Back Fence

For the past two or three weeks I've been sending the usual letters with article links to a list of "subscribers" via my Gmail account, since Comcast changed its interface so that my previous mail program no longer works. Now Google in its infinite wisdom has decided that our list of subscribers is suspiciously long, so they've unilaterally disabled ALL my outgoing email. I sincerely hope this can be fixed. Any ideas would be welcome. My incoming email still works, just can't reply.