# How to integrate with SMTP for sending notifications This document shows how to integrate Synapse with SMTP for sending emails. Synapse should be deployed beforehand. ## Deploy smtp-integrator charm For Synapse to use SMTP, it uses the smtp-integrator charm. Replace the configuration options with your specific configuration. Configuring SMTP without `tls`, `starttls`, or authentication is not supported. ```default juju deploy smtp-integrator --channel edge juju config smtp-integrator host= port= user= password= auth_type=plain transport_security=tls ``` ## Configure email to use in `From` Configure the “From” mail for Synapse with: ```default juju config synapse notif_from= ``` ## Integrate with Synapse You can run it with the legacy integration `smtp-legacy` or with the new integration using secrets `smtp`. A Juju version with secrets is required for the `smtp` integration. With the old integration without using secrets, run: ```default juju integrate smtp-integrator:smtp-legacy synapse:smtp ``` For the new integration with secrets, run: ```default juju integrate smtp-integrator:smtp synapse:smtp ```