Duplicate Send Guard: stop the same text or email going twice

The Duplicate Send Guard stops your automations sending the same text or email to the same person twice. It is switched on for every workspace by default.

Why it exists

Sometimes the same lead reaches TrustPager twice. Two tools might both forward your ad leads, a website form might be submitted twice, or a connected app might retry a delivery. Each copy starts your automations, and without the guard the customer would get your welcome text or email twice, which reads as spam from your business.

How it works

• Just before an automated SMS or email goes out, TrustPager checks whether this exact message already went to this exact person inside the block window.
• If it did, the repeat is not sent and no credits are used for it.
• The block window is 24 hours by default. After it passes, the same message can be sent again.
• "Exact" means the final message the person would see: the same SMS text, or the same email subject and body. A message that differs at all, even by a name or a date, is sent as normal.

What is never blocked

• Messages you or your team send yourselves, such as an SMS from the inbox or an email you compose.
• Test sends from the automation builder.
• Email campaigns, which have their own "you already sent this" check.

How to see when a message was blocked

A blocked message shows on the contact's timeline as "SMS not sent" or "Email not sent", with the reason. Blocked emails also appear in your email logs with a Blocked status.

Change the setting

Open https://app.trustpager.com/settings/auto and choose Duplicate Sends. You can switch the guard off, or change the block window to anything from 1 hour to 168 hours (7 days). Changes save automatically.