In Deliver, you can send test or ad-hoc messages from a mailing.
You can also preview the message to see it as if it were being read by a given record.
.png?sv=2026-02-06&spr=https&st=2026-07-23T03%3A55%3A05Z&se=2026-07-23T04%3A06%3A05Z&sr=c&sp=r&sig=T5O8TdicIgeVtVxlSnvpgXMX%2FxxChNP2hI6oq1sAl7o%3D)
Previewing a message
To preview a message:
Go to Deliver and select a mailing.
Select Preview Message.
.png?sv=2026-02-06&spr=https&st=2026-07-23T03%3A55%3A05Z&se=2026-07-23T04%3A06%3A05Z&sr=c&sp=r&sig=T5O8TdicIgeVtVxlSnvpgXMX%2FxxChNP2hI6oq1sAl7o%3D)
Select a recipient list.
Enter the intended recipient's name in the Record field. Suggested matches appear.
.png?sv=2026-02-06&spr=https&st=2026-07-23T03%3A55%3A05Z&se=2026-07-23T04%3A06%3A05Z&sr=c&sp=r&sig=T5O8TdicIgeVtVxlSnvpgXMX%2FxxChNP2hI6oq1sAl7o%3D)
Select a record. Slate checks the record against the filters in your recipient list. The record does not need to meet the criteria already set for the Deliver message.
.png?sv=2026-02-06&spr=https&st=2026-07-23T03%3A55%3A05Z&se=2026-07-23T04%3A06%3A05Z&sr=c&sp=r&sig=T5O8TdicIgeVtVxlSnvpgXMX%2FxxChNP2hI6oq1sAl7o%3D)
Select Preview.
The mailing appears in the preview window as if the selected record were viewing it.
Send an ad-hoc or test Deliver mailing
You can send any Deliver mailing as an ad-hoc message to a given recipient. You can also send the message as a test.
Select Send Message.
Configure the following settings:
Type: Select one of the following:
Send Ad-Hoc: Sends the message to the previewed record.
Send Test: Send a test message to an address you provide.
Recipient:
Send Ad-Hoc: The record selected in Preview Record.
Test: Defaults to the current user’s contact information. Can be updated.
Subject: For email messages:
Send Ad-Hoc: Update subject line, if desired.
Test: Same as above, but prepended by default with
[Test].
Message body: Edit the message body as needed.

Select Send. Slate sends the message to the selected recipient.
📝 NoteWhen an ad-hoc message is sent before a record meets the recipient list criteria, the record is added to the query execution. This ad-hoc message can be seen within the recipient list and will display “adhoc” in the memo column. As a result, if deduping on the mailing is set to “Send only one message/recipient,” the recipient will not receive the message again if they meet criteria in the future. Mailing analytics are inclusive of both ad-hoc and those records that met the broader recipient list criteria.