Templates can be found in System Settings → Templates.
Comprehensive list of all templates in Sharper MMS:
ACH Declined
ACH Sign-up Email
ACH Terms And Conditions
Credit Memo Email
Credit Memo Email Attachment
Credit Memo Item Block
Credit Memo Print
Customer Marketing Email
Deposit Pay Email
Deposit Pay Email Attachment
Deposit Pay Item Block
Detailed Statement
E-sign
E-sign Email
Email Signature
Invoice
Invoice Item Block
Non-Transient Reservation Item Description
Online Booking Template
Order Item Sale Description
Payment Email
Payment Email Attachment
Payment Print
Power Meter Reading Description
Product Contract
Product Contract Email
Refund Email
Refund Email Attachment
Refund Print
Reservation Email
Reservation Item Block
Reservation Item Extra Charge Description
Reset Password Email
Statement
Statement Transaction Block
Statement Transaction Detail Block
Status Update Email
Status Update Email Attachment
Status Update Email Item Block
Transient Folio
Transient Folio Item Block
Transient Reservation Item Description