workavia-mail-front/docs/adr/0065-logic-for-reply-email.md

65. Logic for reply email

Date: 2025-04-21

Status

Accepted

Context

• The email reply logic is quite complex so to avoid mistakes and regression of errors later.

Decision

Brief the logic flow to easily follow changes during email reply process:

1. Reply:

• If the user is the sender

To = email.to
Cc, Bcc, ReplyTo = Empty

• Otherwise, If the email has a List-Post header then:

To = email.from.withoutUser
Cc, Bcc, ReplyTo = Empty

• Otherwise, If the email without a List-Post header, email.replyTo is not empty then:

To = email.replyTo.withoutUser
Cc, Bcc, ReplyTo = Empty

• Otherwise:

To = email.from.withoutUser
Cc, Bcc, ReplyTo = Empty

2. Reply To List:

• If the email has a List-Post header then:

To = email.List-Post.withoutUser
Cc, Bcc, ReplyTo = Empty

• Otherwise: There is no Reply To List feature

3. Reply all

• If the user is the sender

To = email.to.withoutUser
Cc = email.cc.withoutUser
Bcc = email.bcc.withoutUser
ReplyTo = email.replyTo.withoutUser

• Otherwise, If the email has a List-Post header then:

To = (email.replyTo + email.from + email.to).withoutUser
Cc = email.cc.withoutUser
Bcc = email.bcc.withoutUser
ReplyTo = Empty

• Otherwise, If the email without a List-Post header, email.replyTo is not empty then:

To = (email.replyTo + email.to).withoutUser
Cc = email.cc.withoutUser
Bcc = email.bcc.withoutUser
ReplyTo = Empty

• Otherwise

To = (email.from + email.to).withoutUser
Cc = email.cc.withoutUser
Bcc = email.bcc.withoutUser
ReplyTo = Empty

Consequences

• Any changes to reply email should be updated in this ADR.