Subscription e-mails (digest) - links are wrapped across lines

In the subscriptions e-mails I get (digested), the URLs are typically wrapped across lines, like:

| Post link:

| 

|http://community.intersystems.com/post/explanation-defaultdb-database-2

|01610  Direct unsubscribe link (content type):

My mail client can't handle this, of course; the link doesn't work. (The actual link in this case is: https://community.intersystems.com/post/explanation-defaultdb-database-2... )