Knowledge Base

Home / Knowledge Base / Using UltraSMTP / Using UltraSMTP as a Passthrough


As an alternative to configuring your mail client to send outgoing mail through UltraSMTP, outbound mail sent from any source can be routed through UltraSMTP using UltraSMTP's Passthrough Service. This includes messages sent from other outgoing SMTP services (such as ISP-hosted SMTP servers), mail sent from webmail services (such as Yahoo Mail, Hotmail, and Gmail), and email messages sent by web applications.

To route a message through UltraSMTP's Passthrough Service, simply append to the recipient's email address. For example, to send a message to through UltraSMTP's Passthrough Service, you would address the message to

Note: Messages must be sent FROM a registered email address on your UltraSMTP account.

UltraSMTP will remove the suffix from the recipient's email address, apply any tracking and delivery confirmation features enabled on your account, and deliver the message.

Getting Started With UltraSMTP
Configuring Your Mail Client to Send Outgoing Mail Through UltraSMTP

New from the creators of UltraSMTP:
EncryptedSend - Browser based end-to-end encrypted messaging

© Meixler Technologies, Inc. All Rights Reserved.