Plugin details

FlowSynx Email Sender Plugin

The Email Sender Plugin is a pre-packaged, plug-and-play integration component for the FlowSynx engine. It enables sending emails with support for multiple recipients, CC, BCC, HTML or plain text bodies, and attachments. Designed for FlowSynx’s no-code/low-code automation workflows, this plugin simplifies email integration for various workflow scenarios.

This plugin is automatically installed by the FlowSynx engine when selected within the platform. It is not intended for manual installation or standalone developer use outside the FlowSynx environment.

Purpose

The Email Sender Plugin allows FlowSynx users to:

Send emails from a configured SMTP server.
Support multiple recipients (To, CC, BCC).
Send HTML or plain text email bodies.
Include multiple attachments in emails.
Simplify email notifications within automated workflows.

Plugin Specifications

The plugin requires the following configuration:

Host (string): Required. The SMTP server host (e.g., smtp.flowsynx.io).
Port (int): The SMTP server port. Default: 587.
UseSsl (bool): Whether to use SSL for the SMTP connection. Default: true.
Username (string): Required. The username for SMTP authentication.
Password (string): Required. The password for SMTP authentication.
From (string): Required. The default sender email address.

Example Configuration

{
  "Host": "smtp.flowsynx.io",
  "Port": 587,
  "UseSsl": true,
  "Username": "noreply@flowsynx.io",
  "Password": "securepassword",
  "From": "noreply@flowsynx.io"
}

Input Parameters

Each send operation accepts the following parameters:

Parameter	Type	Required	Description
`From`	string	No	The sender email address. Overrides default `From`.
`To`	List<string>	Yes	A list of recipient email addresses.
`Cc`	List<string>	No	A list of CC (carbon copy) recipient email addresses.
`Bcc`	List<string>	No	A list of BCC (blind carbon copy) recipient addresses.
`Subject`	string	Yes	The subject of the email.
`Body`	string	Yes	The body content of the email.
`IsBodyHtml`	bool	No	Whether the body is HTML. Default: `false`.
`Attachments`	List<object>	No	A list of attachments. See Attachment Structure.

Attachment Structure

Each attachment object includes:

Field	Type	Required	Description
`FileName`	string	Yes	The name of the attachment file.
`Content`	byte[]	Yes	The binary content of the attachment file.
`MimeType`	string	No	The MIME type of the attachment. Default: `application/octet-stream`.

Example input (Send)

{
  "Operation": "send",
  "From": "noreply@flowsynx.io",
  "To": ["user1@flowsynx.io", "user2@flowsynx.io"],
  "Cc": ["manager@flowsynx.io"],
  "Bcc": ["auditor@flowsynx.io"],
  "Subject": "Monthly Report",
  "Body": "<h1>Report Ready</h1><p>Please find the report attached.</p>",
  "IsBodyHtml": true,
  "Attachments": [
    {
      "FileName": "report.pdf",
      "Content": "BASE64_ENCODED_BYTES_HERE",
      "MimeType": "application/pdf"
    }
  ]
}

Debugging Tips

Verify the Host, Port, Username, Password, and From values are correct.
Ensure that your SMTP server allows connections from the FlowSynx environment and supports the configured authentication method.
If sending fails, check if the SMTP server requires application-specific passwords or IP whitelisting.
For attachments, make sure the Content field contains properly encoded binary data.

Email Sending Considerations

HTML vs Plain Text: Use IsBodyHtml=true to send HTML emails. Ensure the body content is properly formatted HTML.
Large Attachments: SMTP servers often impose size limits; avoid attachments larger than the server's allowed limit.
Security: Credentials (Username and Password) are securely stored by the FlowSynx engine and are not exposed during workflow execution.

Security Notes

The plugin uses standard SMTP authentication to connect to the configured mail server.
No email content or credentials are persisted outside the execution scope unless explicitly configured.
Only authorized FlowSynx platform users can view or modify plugin configurations.

Version	Latest	Downloads	Last updated
1.1.0		0	07/12/2025
1.0.0		0	07/12/2025

FlowSynx.Communication.Email.Sender

Version: 1.1.0