otp.com
Send and verify one-time codes through a shared API
SMS
Products for sending, receiving, and managing text messages through mobile telephone messaging networks.
Callspark
Respond to missed calls and track lead follow-up
Comcent
Handle calls, texts, chat and email in a shared customer inbox
CallsKept
Follow up missed calls and organize customer callbacks
MonoDuty
Route incident alerts through on-call schedules and escalation rules
VirtualText
Handle business SMS and website chat in a shared inbox with AI-assisted handoffs
VoiceDrop
Manage ringless voicemail, business calls, and two-way text messaging
Claw Messenger
Connect AI agents to iMessage, RCS, and SMS through one API
SMS to Slack
Send and receive business text messages through Slack channels
Veritel
Receive SMS through temporary numbers in a private dashboard
Sendly
Add SMS verification, alerts, and campaigns to your application
Sent
Route SMS, WhatsApp, and RCS messages through one API
AskNeo
Manage customer calls, texts, and contacts in a shared team inbox.
Comms
Connect customer messaging, AI replies, and human handoffs across iMessage, RCS, and SMS.
Hola AI
Answer missed calls with an assistant and receive searchable summaries.
Dial
Give AI agents phone numbers and a shared interface for calls and messages
Hey Noah
An AI executive assistant available through voice and SMS
Marsello
Connect loyalty programs with in-store and online customer activity.
Constant Contact
Build email campaigns and automate small-business marketing
Endorsal
Collect customer testimonials and publish review widgets