SMTP | Sim Docs

The SMTP block sends email through a mail server using its hostname, port, security protocol, and credentials. Set the sender, recipients, subject, and plain-text or HTML body; add CC, BCC, reply-to, and attachments as needed. Inspect the returned send status and message ID, or the error if sending fails.

Use the block

Send email through an SMTP server using its host, port, security protocol, and credentials. Configure recipients, message content, and optional attachments.

Actions

SMTP Send Mail

Send emails via SMTP server

Input

Parameter	Type	Required	Description
`smtpHost`	string	Yes	SMTP server hostname (e.g., smtp.gmail.com)
`smtpPort`	number	Yes	SMTP server port (587 for TLS, 465 for SSL)
`smtpUsername`	string	Yes	SMTP authentication username
`smtpPassword`	string	Yes	SMTP authentication password
`smtpSecure`	string	Yes	Security protocol (TLS, SSL, or None)
`from`	string	Yes	Sender email address
`to`	string	Yes	Recipient email address
`subject`	string	Yes	Email subject
`body`	string	Yes	Email body content
`contentType`	string	No	Content type (text or html)
`fromName`	string	No	Display name for sender
`cc`	string	No	CC recipients (comma-separated)
`bcc`	string	No	BCC recipients (comma-separated)
`replyTo`	string	No	Reply-to email address
`attachments`	file[]	No	Files to attach to the email

Output

Parameter	Type	Description
`success`	boolean	Whether the email was sent successfully
`messageId`	string	Message ID from SMTP server
`to`	string	Recipient email address
`subject`	string	Email subject
`error`	string	Error message if sending failed