AutoWelcome Bot

Automatically welcomes new Reddit members with a customizable message, saving moderators time and improving community engagement.

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Inspiration

What it does

How we built it

Challenges we ran into

Accomplishments that we're proud of

What we learn## What is AutoWelcome Bot?

AutoWelcome Bot is a Devvit app that automatically sends a personalized welcome message to every new member who joins a subreddit. Moderators can customize the welcome message directly from the subreddit menu — no coding required!

Inspiration

New members often feel lost when they join a community. A warm welcome message helps them understand the rules, feel included, and stay engaged. Moderators waste valuable time manually welcoming members — AutoWelcome Bot solves this instantly.

What I Learned

  • How to build and deploy apps using Reddit's Devvit platform
  • Using Devvit triggers to respond to subreddit events like new member joins
  • Storing custom mod settings using Devvit's kvStore
  • Building moderator-friendly UI with forms and toast notifications

How I Built It

AutoWelcome Bot was built using:

  • Devvit — Reddit's developer platform
  • TypeScript — for type-safe code
  • SubredditSubscribe trigger — fires when a new member joins
  • kvStore — to save custom welcome messages per subreddit

Challenges

The biggest challenge was learning the Devvit platform from scratch and understanding how triggers and kvStore work together to create a seamless moderator experience.ed

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