MMS and attachments

SMS conversations carry media both directions — customers text photos in, your team sends images back — subject to the realities of carrier MMS.

Receiving media

Inbound MMS attachments download into the conversation automatically: images, video, audio, text and contact cards, capped at 10 MB per item. Each attachment appears as its own message in the thread and can be previewed or downloaded; access is limited to the conversation's participants.

Sending media

The attach button in any SMS thread sends media outbound. Keep files small — carriers enforce their own MMS limits, and around 1 MB is the practical ceiling for reliable delivery even though your provider may advertise more. Photos straight off a phone camera usually need resizing.

Message length and segments

Plain texts are billed and delivered in segments (160 characters, or 70 when the message contains characters outside the basic set — emoji, most non-Latin scripts). The composer counts segments as you type, so a "text" that's about to become four billable segments is visible before you send it.

Senders you can't reply to

Texts from short codes and alphanumeric senders (delivery notifications, marketing blasts, one-time codes) arrive normally, but replies aren't possible — the composer disables itself on those conversations and says why.