SMS and MMS messaging
About this guide
Last reviewed October 1, 2026 by AgencyMesh Product Support · Checked against release 2026.10
Send one image or PDF with your office’s prepared message. The Message field is read-only; Messaging does not compose custom text.
Send an MMS
Section titled “Send an MMS”Where: Text Messages > Messaging.
Dashboard > Communications > Send MMS uses the specific office selected in Phone / Office. Choose an office instead of All Offices.
- Enter the 10-digit US Phone Number and choose Office.
- Choose one Attachment and click Send. Find the result in Recently Sent Messages.
Choose a supported attachment
Section titled “Choose a supported attachment”An attachment is required. Choose another file in Attachment to replace it before sending; there is no attachment preview or recall.
| Item | Guidance |
|---|---|
| Images | One JPEG, PNG, or GIF, up to 5 MB. |
| One PDF, up to 600 KB. |
Check a sent message
Section titled “Check a sent message”Where: Messaging > Recently Sent Messages.
Use Message ID when reporting a delivery problem. For older records, use Text Messages > Search.
- Filter with Search sent messages…; use Refresh messages now to update the list.
- Click View on the message to see its body, attachments, Status, Error Code, and Error Message.
Help a customer subscribe or unsubscribe
Section titled “Help a customer subscribe or unsubscribe”Under How to Manage Opt-in, use the displayed sending number: customers text START to subscribe or STOP to unsubscribe.
Use Copy beside Shareable Subscription Link to share the subscription page. The customer must send the opt-in text; opening the link alone does not subscribe them.
Resolve a failed send
Section titled “Resolve a failed send”Open the message’s View details and use Error Code / Error Message to identify the problem. Correct the number, subscription, or attachment before sending again. Check the existing record first if the first result was unclear.