Comment by WaitWaitWha

I would add video chats into this waste of time.

I can confirm as a (largeish) buyer, i despise useless calls and video conferences.

I do not have time, and it costs me money to hop on a 20 minute call just to find out it was a presentation of their slicks that were in PDF, or go through 30 slides that they could have emailed me.

It costs me money for a vendor and internal teams to eat time, and my cost change depending on the time of the day. My rate is highest during mid to late day. If you send me an email with the info and I can read it in my morning quiet time, it (mentally & $$) cost less, and I will be less grouchy.

there are some times when a call works. If the emails are fruitless because the writers lack the ability to be succinct, or cannot articulate what they need.

edit: @spiderfarmer wrote it much better.