Sending emails from the Linux terminal while preserving the fact of sending

I need to send a letter from Linux terminal to the recipient's mailing address. I want the fact of sending the letter, its title and its text to be saved in the sent section of my mailbox (the mailbox is administered by another company). It would be great if I didn't have to click to send them as in the script below. Here is my previous solution, this method saves the attachments and forces me to click. thunderbird -compose to="${mails}" ,subject="${sub}" ,body="${text}" ,attachment="'${attach},${letter}'"; Following the advice of the commenters, I configured mutt to use a mailbox. This is my first time using it, so maybe I did something wrong, but I was able to get a list of my emails on the server. Here is my .muttrc file (if you have any advice fot this file, please tell me): # ======================= IMAP ========================= set imap_user = myaccount@company.com set imap_pass = mypassword set spoolfile = imaps://mail.company.com/INBOX set folder = imaps://mail.company.com/ set record = "=SENDED" set postponed = "=DRAFTS" set mbox = "=INBOX" #set header_cache = "~/.mutt/cache/headers" #set message_cachedir = "~/.mutt/cache/bodies" set certificate_file = "~/.mutt/certificates" # ======================= SMTP ========================= set smtp_url = "smtp://myaccount@company.com@mail.company.com:123/" set smtp_pass = $imap_pass set ssl_force_tls = yes # ======================= Composition ================== set editor = "nano" set edit_headers = yes set charset = UTF8 unset use_domain set realname = "My Name" set from = "myaccount@mail.company.com" set use_from = yes In any case, authorization on the server was successful and I received a list of my letters in the terminal. Command to sending mails with attachments is: mutt -s "This is Subject" -a a.txt -- yipsokikko@gufum.com < test.txt