--- title: "Smart Sending: SmartyTap docs | Chargezen" description: "Smart Sending skips anyone who got an email from another campaign in the last 16 hours, or a text in the last 24, so nobody hears from you too often." url: "https://chargezen.com/docs/smartytap/sending-and-compliance/smart-sending" lang: "en" updated: "2026-10-19" --- Canonical URL: https://chargezen.com/docs/smartytap/sending-and-compliance/smart-sending # Smart Sending Smart Sending skips anyone who got an email from another campaign in the last 16 hours, or a text in the last 24, so nobody hears from you too often. Last updated: 2026-10-19 Smart Sending keeps you from sending one customer too many messages in a short time. When a campaign message goes out, SmartyTap skips anyone who already got a message on the same channel from another campaign recently: * **Email: 16 hours.** Anyone who got an email from another campaign in the last 16 hours won't get this one. * **SMS: 24 hours.** Anyone who got a text from another campaign in the last 24 hours won't get this one. The windows are fixed per channel. Fewer back-to-back messages mean fewer unsubscribes and spam complaints. ## Turn it on or off for a message 1 #### Open the message In **SmartyTap > Campaigns > All campaigns**, open the campaign and click an email or SMS message card. 2 #### Find Smart Sending On the **Message** tab, find the **Smart Sending** section. 3 #### Choose Leave **Skip people who recently got a message** checked (it's on by default for new messages), or clear it for a time-sensitive message, like a last-hours sale reminder. If you turn it off for a text, the review before launch warns you that people who got a text from another campaign in the last 24 hours will get this one too, with a **Turn on Smart Sending** button. ## What counts as a recent message * **Same channel only.** A recent email doesn't hold back a text, and a recent text doesn't hold back an email. * **Other campaigns only.** Messages from the same campaign never count, so your planned follow-ups (say, an email and then a reminder text) always go out. * **Marketing only.** Transactional messages, like order updates, don't count and are never skipped. * **Checked when each message sends**, not when you schedule it, so it reflects what each customer really received. ## See who was skipped The recipient estimate before launch can't know who will be skipped, because Smart Sending checks at send time. The text cost review says so: "People are checked again when each text is sent and Smart Sending can skip some, so you may send fewer texts than this." After the campaign sends, its performance panel shows **Skipped by Smart Sending**. Skipped texts cost nothing You pay for texts that go out (2ยข per part), so a text Smart Sending skips isn't charged. ## Smart Sending in flows Marketing messages in flows use Smart Sending too, and transactional flow messages never do. Smart Sending counts marketing sends only. ## Troubleshooting and FAQ ### Can I change the 16- or 24-hour window? No. The windows are fixed per channel. You can turn Smart Sending off for a single message. ### My campaign reached fewer people than the estimate Check **Skipped by Smart Sending** in the campaign's performance panel. Quiet hours can also delay texts, which isn't the same as skipping them. ### Is Smart Sending the same as quiet hours? No. Smart Sending decides whether someone gets a message; [quiet hours](https://chargezen.com/docs/smartytap/sending-and-compliance/quiet-hours) decide when a text may arrive. ## Related **Guides** * [Quiet hours](https://chargezen.com/docs/smartytap/sending-and-compliance/quiet-hours) * [Opt-in and opt-out](https://chargezen.com/docs/smartytap/sending-and-compliance/opt-in-and-opt-out) **On the product page** * [Email and text campaigns](https://chargezen.com/smartytap/campaigns) * [SMS compliance](https://chargezen.com/smartytap/sms-compliance) **Learn more** * [What is an SMS campaign?](https://chargezen.com/glossary/sms-campaign) * [Black Friday email and SMS checklist](https://chargezen.com/blog/bfcm-email-sms-checklist) ### Related Articles [ #### Quiet hours Hold texts at night in each time zone ](https://chargezen.com/docs/smartytap/sending-and-compliance/quiet-hours)[ #### Opt-in and opt-out Who may get your messages ](https://chargezen.com/docs/smartytap/sending-and-compliance/opt-in-and-opt-out)[ #### Contacts and consent Where your audience comes from ](https://chargezen.com/docs/smartytap/getting-started/contacts-and-consent) Was this page helpful? Need more help? [Contact support](https://chargezen.com/docs/checkoutos/troubleshooting/support)