Sender

   SMTP Sender

Use Return-Path

Always will always use the Return path address as the sender address when present. First, Second, Third, Fourth allows you to prioritize this header for use as the SMTP sender address. For example all those set to First will be checked first and the sender used if a valid address is found. Then the second fields will be checked and used if present. Last Resort will only use sender from this field if no others have been found.

Example interface:

Default:First

Use From

Always will always use the From address as the sender address when present. First, Second, Third, Fourth allows you to prioritize this header for use as the SMTP sender address. For example all those set to First will be checked first and the sender used if a valid address is found. Then the second fields will be checked and used if present. Last Resort will only use sender from this field if no others have been found.

Example interface:

Default:Second

Use Custom

Always will always use the custom field address as the sender address when present. First, Second, Third, Fourth allows you to prioritize this header for use as the SMTP sender address. For example all those set to First will be checked first and the sender used if a valid address is found. Then the second fields will be checked and used if present. Last Resort will only use sender from this field if no others have been found.

Example interface:

Default:Never

Header

Use a custom MIME header address as the SMTP sender address

Example interface:

Default Sender Address

You can override the sender address used for missing senders using this setting. Some email will have no suitable MIME addresses for the sender. The default behaviour is to use POP3_<account name/email> as the address. Use this setting to specify your own sender address to use when no From MIME field is available. NOTE: using an internal/local address may stop the email being processed for SPAM etc. The address should be a valid address external to your domain, which is not allowlisted. Specify NONE to use a blank sender when sending the email on the next hop, if your server supports this. This setting only controls the SMTP envelope sender address and will not affect replies to the email or the displayed From field in email clients

Example interface:

Always use this sender

You can override the sender address used for ALL email using this setting. Note that the reply-to and displayed From field shown to recipients of the email will not be affected. This setting only controls the SMTP envelope sender address

Example interface:

Options:On/Off

Default:off

Force From Address

You can override the displayed From address (MIME From field) shown to recipients of the email. This will change the displayed From address and Reply-To address that the final recipients of the email will see in their email client.

Example interface: