Verify the User ID Account or Main Email address

1. Open Library Master, Main menu, Company Maintenance.
2. Select the correct Company Code.
3. Go to the E-mail.
4. Ensure the User ID field contains the correct email address.
5. Click Accept.

 NOTE: The email in Company Maintenance defaults for Paperless Office. Updating it will update Paperless Office as well. 

Verify the form entries

1. Open Paperless Office, Setup menu, Form Maintenance.
2. Click the Form Entry (flashlight icon) to list entries.
3. Select the entry most specific to your scenario.
4. Go to the Main.
5. Check the From E-mail Address.
6. Click Accept.

 NOTE: The User ID in Company Maintenance must have rights to "send as" the From E-mail Address. 

Verify On-the-Fly settings for each form

1. Open the relevant printing task (for example, Sales Order, Invoice Printing).
2. Select the affected Form Code.
3. For Paperless Office Output, choose "Electronically Deliver Only".
4. Click the Electronic Delivery (paperless icon) button.
5. Check the From E-mail Address.

 NOTE: On-the-fly settings override Form Maintenance and Company Maintenance. If the changes don’t stick, follow the steps below. 

If the issue persists

1. Open Library Master, Main, Data File Display and Maintenance.
2. Select "..\MAS90\MAS_SYSTEM\SY_Company.M4T".
3. Note the affected Company Code and Company Key.
4. Select "..\MAS90\MAS_SYSTEM\SY_ReportOption.M4T".
5. Locate the record by CompanyKey$, DocumentName$, and Form Code.
6. Edit the OptionsString$.
7. Remove the incorrect email address from BT_EMAIL$="..." and leave blank spaces.
8. Save changes and re-verify on-the-fly settings.

 NOTE: Some email systems don't allow multiple From addresses for one account. Consult your SMTP provider if issues persist. 

How to use Paperless Office to email customer and vendor forms from Sage 100.
How to change the "From" E-mail Address for forms in Paperless Office.
Error: "Client doesn’t have permissions to send as this sender" in Chilkatlog.