SMS
Send and receive SMS, limits, opt-out and deliverability.
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- How to add opt-out (STOP) and business identification to your textsIn Settings › Phone System › Messaging › Messaging Compliance, turn on the opt-out message and sender information, customize the text and, if you like, repeat them every X days. Anyone who replies STOP stops receiving texts.
- How to alert your team by text when a customer replies by SMSBuild a workflow under Automation › Workflows with the Customer Replied trigger filtered by Reply Channel = SMS, add a Send Internal Notification action of type SMS, include the contact's name and the message body, and publish. The original text stays in Conversations; the team gets a separate alert.
- How to fix error 30007 (SMS filtered by the carrier)Error 30007 means the carrier blocked your text as unwanted or non-compliant. Fix the message (no public shorteners, no excessive caps or emojis), include your business name and the STOP line, text only people who opted in and, if it persists, gather 3 examples from the last 7 days and send them to support.
- How to fix the "From number is not SMS-capable" errorThis error appears before the message leaves, because the number chosen as sender can't send texts. Under Settings › Phone Numbers, confirm the number has messaging enabled and, in the U.S., that it's linked to an approved A2P registration; otherwise pick another SMS-capable number or buy one.
- How to include links in text messages without getting them blockedDon't use public link shorteners (bit.ly, tinyurl…) in SMS: carriers filter them. Write your page's full address or use a short link on your own domain, with no redirect chains, and measure clicks with UTM parameters.
- How to keep your texts delivering and avoid sending restrictionsText only people who opted in, include your business name and opt-out line (reply STOP) in the first SMS to each contact, avoid public link shorteners and don't text landlines. Keep your error rate under 6% and opt-out rate under 1% to avoid being restricted.
- How to send a text to a contact and choose the sending numberOpen the contact's conversation in Conversations, pick the SMS channel, check the sending number, write your message and click Send. If you don't pick a number, the system uses the user's number, the conversation's number or the account's default number.
- How to send images by text (MMS) and which size limits to respectIn the conversation, pick the SMS channel, click the three dots › Attach Files, choose the image (JPEG, PNG or GIF) and send: the message goes out as MMS. Keep the image under 500 KB; files that can't go through directly are sent as a link to Media Storage.
- Why a text failed and how to fix itIn Conversations, open the conversation, hover over the red warning on the text and note the error code. The code tells you the cause (contact opted out, invalid number, missing registration, filtered message…); fix it before resending.