Text to join that grows your list on autopilot
Text to join lets people subscribe to your SMS updates by texting a keyword to your number.
Automatic replies, opt-in tagging and opt-outs run on their own, so your list grows with clear permission and every new subscriber starts a conversation.
Designed to grow your list and start the conversation
Tools that help you collect opt-ins, welcome every subscriber and stay compliant.
Unlimited keywords
Rent as many keywords as your campaigns need, so you can run several opt-in campaigns at once without overlap.
Learn more →Dedicated short code
Promote a short, memorable number on signs, ads and social media, so people can text in from anywhere and land on your list.
Learn more →Automatic list building
Each keyword links to a contact list, so every opt-in is added and tagged for you.
Automatic replies
Set an automated reply for the moment someone texts your keyword, so people get an instant answer and the conversation can flow.
Learn more →Opt-in tagging
Contacts are tagged by how they opted in, so every later call, text or email can be relevant.
Automatic opt-outs
Contacts who reply STOP, CANCEL or QUIT are removed instantly, so you never text someone who asked you to stop.
From keyword to subscriber in four steps
Watch a text-to-join keyword being set up
Reserve a keyword
Pick a simple, memorable word like ACTION or JOIN.
Link it to a list
Choose the contact list and number your keyword uses.
Write your welcome message
Add an automatic reply and any required disclosures.
Promote it
Share “Text ACTION to 123-456” on your site, emails and social. Opt-ins land on your list instantly.
See text to join built for your campaign
Book a 30 minute session and we’ll help you set up your first keyword.
Book a Demo
Text to join for every team that builds a list
Grow a list of people who want to hear from you, whether it’s voters, members, donors or supporters.
Advocacy organizations
- Petition drives and list growth
- Issue advocacy signups
- Rapid-response mobilization lists
Nonprofits
- Fundraising drives with donation links
- Event invitations and RSVPs
- Win back lapsed donors
Unions
- Member list building
- Meeting reminders and event updates
- Contract vote outreach
Political campaigns
- Voter list building
- Volunteer recruitment and GOTV signups
- Event and rally registration
Text to join in a unified flow, not a standalone signup tool
A unified flow means your opt-ins, texts and calls run as one campaign, not separate tools. Every new subscriber lands on your list, tagged, so each channel knows who they are and what to do next.
Hear from organizations winning with CallHub
Ready to grow your list on autopilot?
Book a 30 minute session and we’ll help you launch your first text-to-join keyword.
Questions about text to join
Text to join is a fast way for people to subscribe to your SMS updates. They text a keyword, like “JOIN” or “VOLUNTEER”, to your number, which gives you clear permission to text them.
You reserve a keyword in CallHub and share it with your number, for example “Text ACTION to 123-456 to join our alerts.” When someone texts it, CallHub adds them to your list, tags them and sends your welcome message automatically.
A keyword is a word people text to your number to opt in, like JOIN or ACTION. In CallHub, each keyword links to a contact list and a welcome message.
An SMS opt-in is your audience’s explicit permission to text them. In most countries you need provable consent to send bulk texts. It also gives you a list of people who want to hear from you, which means better response rates.
An opt-out lets subscribers stop your messages at any time. If a contact replies STOP, QUIT, END, CANCEL or UNSUBSCRIBE, CallHub marks them as opted out and sends a final confirmation. It happens automatically on every campaign.
In your CallHub dashboard, open Keywords and create a simple, memorable keyword. Assign it to a number, link it to a contact list, and write your welcome message. Once it’s live, every opt-in is added and tagged automatically.
Yes. CallHub can reply the moment someone texts your keyword. Use it to confirm the subscription, share any promised incentive, include required disclosures, or ask a question like “Reply with your zip code to get local updates.”
Share it wherever people already look: signs, flyers, your website, emails and social posts. Use a clear line like “Text ACTION to 123-456 to join,” and a short, memorable number helps.
Yes. You can promote a dedicated short code so people can text in from anywhere and land on your list. See short code texting for shared and dedicated options.
As many as your campaigns need. You can run multiple opt-in campaigns at the same time without overlap.
Text to join gives you provable consent, because people opt in themselves. CallHub also handles opt-outs automatically. Include any required disclosures in your welcome message.
Texts people send to you are free to receive on CallHub. Your replies cost 1.9¢ per text on the pay-as-you-go Essentials plan, with $6 in free credits to start.
Yes. Your welcome message can ask for details right away, like a zip code, so a simple opt-in becomes the start of a real conversation.
Look for one that makes keywords easy to set up, handles opt-outs automatically and syncs new subscribers to your CRM. CallHub does all three and is used by political campaigns, nonprofits, advocacy groups and unions.