Half the time you can't edit an email once you've scheduled. It's a very buggy function. The more reliable way to do this is to cancel the scheduling, go back to the drafts/inbox etc. Edit it as a normal draft then reschedule it. It's quite the hassle. For a paid product it shouldn't be this hard.
The web app can't schedule pre-existing emails you have made in drafts. You can only schedule entirely new email content making it really awkward to have to copy and paste in a mobile app.
You have to add things like "@2017-07-01 04:00 repeat every month" at the end of the subject in your drafts folder. There is no convenient/intuitive interface or natural language to make this easier.
Take a look at the documentation to see if this is for you.
Since this feature works based on adding a string to the end of the subject line and is monitored from the cloud, you can use and change the send later time/date in just about any Gmail client where you can access drafts and change the subject line.
Many users are getting emails from Google Scripts with error logs every day because of Mail Conductor. Instructions to uninstall are to install the add-on again, and then to click the uninstall button at the bottom of the screen where a few options/settings are.
You can get a receipt of when your (delayed) email is sent. This option is in the settings while installing. To change this setting after installing,,go ahead and reinstall, accept at the prompt, and change the setting.
This service is limited to the selected time zone when installing the service. To change the user's time zone, one must update the setting by reinstalling the service. Users of this service must offset the time difference between user and destination and set the (offset calculated) time in the user's time zone.
The user is allowing people to use a google script but is not allowing people access to the code. The upside is there's no addon/extension to install. It's all performed via Google Scripts/ the cloud.