Two-way conversations
Receive replies and follow incoming and outgoing messages in a unified contact timeline.
Conversations that keep moving
Business messaging designed around customer context. Compose, receive and follow conversations, with individual user allowances measured in SMS segments.
Product preview · Activation opens soonMessaging essentials
Delivery states depend on the information returned by the messaging provider.
Receive replies and follow incoming and outgoing messages in a unified contact timeline.
Long messages and Unicode characters can consume more than one segment. Your allowance is measured in segments.
Explore Segment awareness ↗Outbound messaging requires the applicable sender approval, consent and opt-out handling.
Explore Responsible sending ↗A useful preview
Try a sample message below. This tool estimates segments locally; it does not send a message.
Use sample text. Standard multipart SMS uses 153 GSM-7 units or 67 Unicode units per segment. US/Canada toll-free SMS uses 152 or 66. This preview uses the standard limits and does not apply Smart Encoding.
SMS segments
Encoding units
Estimated encoding
Segment reference: Twilio SMS character limits ↗
Pick your messaging window
300 segments for one day, 1,000 for seven days, or 3,000 for 30 days. Calling + messaging plans also include SMS allowances.
See all five per-user plans and their validity periods.