correspondence line icons collection. letters, emails, messages, communications, postcards, notes, memos and

vector icon line sign letters emails messages communications postcards notes memos correspondents penpals telegrams envelopes statiry fax courier mailbox response address stamps inbox archives snail mail communication channels introductions announcements invitations complaints feedback transcriptions corrections revisions inquiries followup answers minutes reports business form thankyou greetings invites condolences personalized mass mailings written exchanges