The Message Composer
At the bottom of each conversation, you'll find the message composer. This is where you'll write and send your responses.
You'll see:
A text box for composing your message
A character counter (turns into an MMS indicator above 160 characters)
Helpful tools: AI suggestions, canned responses, merge tags, and recent responses
An image attachment option for MMS messages
Sending a message:
Type your response
Click Send (or press Ctrl+Enter on your keyboard)
Your message appears in the conversation thread immediately
AI Suggested Responses
Inbox analyzes each conversation and suggests 2-3 contextually appropriate responses. These appear above your composer.
How to use AI suggestions:
Review the suggested responses
Click the one that fits best
The text populates your composer
Edit if needed
Send
Think of AI suggestions as a starting point—they're meant to speed up your work, not replace your personal touch.
Don't see suggestions? They work best when there's enough conversation context. For very short threads or certain message types, suggestions might not appear. You can always compose manually.
Canned Responses
Canned responses are message templates you create for common questions. They're perfect for FAQs, standard information, or any message you send frequently.
Using a canned response:
Click Canned Responses in your composer
Browse or search for the right template
Click to select it
The message populates your composer
Customize if needed (add names, specific details, etc.)
Send
Canned responses can include MMS formatting and merge tags for personalization.
Recent Responses
Quick access to the last 5 messages you sent. Perfect for when you need to send the same information to multiple people or reference what you just wrote.
Click Recent Responses in your composer to see and reuse these messages.
Sending MMS Messages
MMS messages let you include images, formatting, and longer content.
Your message automatically becomes MMS when you:
Type more than 160 characters
Add an emoji
Attach an image
Use formatting
To attach an image:
Click the attachment icon in your composer
Choose your image (JPEG, PNG, or GIF under 5MB)
The image appears in your composer preview
Add your message text
Send
Trouble sending a message?
Make sure the subscriber hasn't opted out (you can't message people who've unsubscribed)
Check that your account has enough message credits
Ensure image files are under 5MB
Verify the image format is JPEG, PNG, or GIF
Images not displaying in received MMS messages? Try refreshing the page. If they still don't appear, the sender's file may have been in an unsupported format or too large.
Responding to Multiple People at Once
Respond to Many
When you have the same information to share with multiple people, use Respond to Many to send personalized messages in bulk.
How it works:
Select the conversations using the checkboxes next to each one
Click Respond to Many at the top of your list
Compose your message (you can use all the same tools: AI suggestions, canned responses, merge tags, MMS, etc.)
You'll see a count of how many people will receive the message
Click Send (Count of people)
Important to know:
Each person receives an individual message—they don't see other recipients
The message appears in each person's individual conversation thread
This isn't a group message—it's individual messages sent efficiently
Example use case: You sent a campaign about an event, and 50 people replied asking about parking. Instead of copying and pasting the same parking information 50 times, select all 50 conversations and use Respond to Many to send everyone the details at once.
Some people didn't receive your bulk message? Check whether they've opted out or if your account ran low on message credits during sending. You can individually message anyone who didn't receive it.