Most people use their phone and it’s a pain to stay logged in on your phone. 

Call the offices of some of the custodians that interest you and see how the phones are answered.

You can have the package list as a note on your phone or PMS and send it to them easily if they ask what is included.

However I also probably would have tried to troubleshoot over the phone before sending the plumber which may or may not have removed the need to send someone.

@Jorge Vazquez we stopped doing signs over 10 years ago.We had a separate phone number on our signs, so were able to track traffic & applications from them.We were getting more & BETTER leads from our online ads then the signs - so an easy choice to stop using them (also time & money savings).

But are you sure that it's impossible to get done remotely, by phone?

Quote from @Aaron Letzeiser: REVISED CODE@Aaron LetzeiserI was hoping to work with Obie, but on the last page before signing the documents, I came across this disclaimer, which made me rethink my decision. 

He was pay ed to install a AC unit in my home and disappeared  he refuse to answer the phone calls texted massages he stole my money and won't respond 

Anyone willing to have a phone call?

You can have an email for each account and you should be able to set your phone up see multiple accounts at once should you get inquiries or messages.Just log into each account to make updates and price changes.