A problem with displaying sent emails from email

When sending a letter to the client's e-mail not from OneBox, but from the connected mail, several copies of this letter are displayed in the client's process in the "Client's latest events" block. [file]22442[/file] [file]22443[/file] [file]22444[/file] In one process, 5 letters appeared, the first letter with full information, others with partial information, in the other 2 letters, one empty. [file]22442[/file] [file]22443[/file] [file]22444[/file] All copies are also displayed in the "Events" application. [file]22442[/file] [file]22443[/file] [file]22444[/file] In reality, only one letter arrives at the client's mail, in the "Mail" application and in the mail account, in the sent - one letter. [file]22442[/file] [file]22443[/file] [file]22444[/file] What could be the problem? [file]22442[/file] [file]22443[/file] [file]22444[/file] [file]22442[/file] [file]22443[/file] [file]22444[/file] [file]22442[/file] [file]22443[/file] [file]22444[/file] [file]22442[/file] [file]22443[/file] [file]22444[/file]