# Will ./launcher destroy app && ./launcher start app remove the built Docker image?

**URL:** https://meta.discourse.org/t/will-launcher-destroy-app-launcher-start-app-remove-the-built-docker-image/378091
**Category:** Support
**Tags:** email
**Created:** [August 11, 2025, 3:06am UTC](https://meta.discourse.org/t/will-launcher-destroy-app-launcher-start-app-remove-the-built-docker-image/378091 "2025-08-11T03:06:53Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![NateDhaliwal](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/natedhaliwal/32/313494_2.png) [@NateDhaliwal](https://meta.discourse.org/u/NateDhaliwal)
#### Post date: [August 11, 2025, 5:14am UTC](https://meta.discourse.org/t/will-launcher-destroy-app-launcher-start-app-remove-the-built-docker-image/378091/2 "2025-08-11T05:14:49Z")

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Hi there, does this help?

> [@Troubleshoot email on a new Discourse install](https://meta.discourse.org/t/troubleshoot-email-on-a-new-discourse-install/16326/1):
>
> ### Well, you don’t **always** need to rebuild
> 
> Doing a rebuild will often fix things that seem broken, but it takes a while. There are times when a full rebuild is not necessary; the above is usually the best advice, but If you change **just** SMTP settings, you can do just this to apply them without doing a full rebuild:
> 
> ```plaintext
> cd /var/discourse
> ./launcher destroy app
> ./launcher start app
> 
> ```

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