SMTP2GO – Connection

SMTP2GO is a cloud-based email delivery service designed to ensure reliable and efficient email communication.

By integrating SMTP2GO with Wiresk, businesses can automate and enhance their email-sending capabilities within workflows. This integration enables secure and fast transactional email delivery, ensuring important notifications, invoices, or updates reach recipients without delays or errors.

It also provides detailed delivery tracking and analytics, which help monitor email performance and improve communication strategies.

Create a SMTP2GO Connection in Wiresk Copy Link

A connection to your SMTP2GO account is needed so we can sync it with our platform.

Get SMTP2GO API Key Copy Link

• Log in to your SMTP2GO account.
• On the Dashboard, go to Sending > API Keys.
• Click Add API Key

• Copy the generated API Key and keep it in a safe place for SMTP2GO in Wiresk.
• Enter a description for your API key (to help identify it later).
• Adjust permissions for Wiresk, refer to the permissions table below.
• Click Add API Key.
• Now, let’s go back to Wiresk My Apps.

API Key Permissions Required for Wiresk Copy Link

Wiresk Trigger/Method	Required SMTP2GO Permission(s)	Notes
Get All Mail Activities	/activity/search	Needed to retrieve mail events from the activity stream.
Get Summary Statistics	/stats/email_summary (plus other /stats/* endpoints if you want more detail)	Required for retrieving summary email statistics.
SMTP2GO Webhook	/webhook/view, /webhook/add, /webhook/edit, /webhook/remove	Required to create and manage webhooks for events.
List Records	/allowed_recipients/view or /allowed_senders/view (depending on record type)	Wiresk uses records as recipient or sender entries.
Create Record	/allowed_recipients/add or /allowed_senders/add	Needed to add a new recipient or sender record.
Update Record	/allowed_recipients/update or /allowed_senders/update	Needed to update existing records.
Delete Record	/allowed_recipients/remove or /allowed_senders/remove	Needed to delete records.
Send Mail	/email/send	Required to send emails through Wiresk Flows.
Send SMS (Paid Plan only)	/sms/send	Required to send SMS messages. Only available if SMS is enabled on your SMTP2GO account.
Get Statistics	/stats/* (e.g. /stats/email_bounces, /stats/email_unsubs, /stats/email_summary)	Covers retrieval of different statistical reports

Add SMTP2GO app in Wiresk  Copy Link

There are two ways to connect your app to Wiresk:

• In “My apps” section, where you can manage your connections (select or create your group first to get access to this section, refer to the Group system ).
• While building your Flow, you can easily establish a connection to your app directly within the Flow builder. This can be done during the setup of either a Trigger or a Method.

This guide explains how to set up a connection in “My apps” section, which is essentially the same process as creating one on-the-go.

• On your Wiresk’s Dashboard, select your Group.
• On the left panel, go to “My apps” and select
• Search “SMTP2GO” in the search field or scroll down the list of apps and choose the SMTP2GO icon.

Fill in the fields:

• Name the SMTP2GO connection.
• Past the API Key from the previous step.
• Click Create, and voila! you are a ready to go.

Important Conditions Copy Link

• Verified Sender: Before saving your SMTP2GO Connection or sending any email with Wiresk, you must add a verified sender (email address or domain) in your SMTP2GO account.
• Active API Key: The Connection requires a valid SMTP2GO API Key with the necessary permissions.
• Plan Requirements: Some features, such as Send SMS, are only available on Paid Plans.
• Domain Authentication Recommended: For better deliverability and to avoid spam filtering, authenticate your sending domain in SMTP2GO.

Where to Verify Senders:
Go to your SMTP2GO dashboard → Sending > Verified Senders. From there, you can add either:

• A single email address (Single Sender Verification), or
• An entire domain (Domain Authentication – recommended).

Official guide: SMTP2GO – Verified Senders

Troubleshooting Copy Link

• Error: “550 5.7.1 Sender address not verified”
  • Cause: The “From” email in Wiresk has not been added as a verified sender.
  • Fix: Add and verify the sender email or authenticate the domain in SMTP2GO.
• Error: “550 5.7.509 Access denied, DMARC policy reject”
  • Cause: The sending domain has a DMARC policy of reject and is not authenticated.
  • Fix: Set up Domain Authentication by adding the DNS records provided by SMTP2GO.

Basic understanding of Flow creation Copy Link

Now that SMTP2GO is linked to Wiresk, you’re ready to start building Flows.

Simple steps to create a Flow ↓

• Select your Group, then on the Flow management screen click on “Create Flow”.

Select the Trigger

Flows can be executed by multiple Triggers, depending on the desired workflow. For example, you could use scheduled Triggers with different recurrence rules alongside a Webhook Trigger for immediate, event-driven runs of the Flow. If you choose to “Run Once“, the Flow will execute using only one Trigger and its sample data.

• On the new screen, name the Flow that you want to create.
• Add your Triggers by clicking on the next to “All Triggers”.
• On the Trigger selection screen, search your app or select it from the list below the screen.

• Select your preferred Trigger on the next screen and customize its settings. Refer to SMTP2GO Triggers settings.

As mentioned in “How to connect your app to Wiresk” above, during your Trigger settings, you can create a new connection to your apps at this stage.

Add a Method to your Flow

The Method will perform a specific task on a particular app or service you’ve connected to Wiresk like get info or send emails.

You can add at least 1 or multiple Methods for complex Flows (a maximum of 255 Methods).

• On the Flow builder screen, click on the plus button (+) next to the Trigger icon.

• Search or scroll down to select your apps Methods, then configure it settings. Refer to SMTP2GO Methods settings.

Add Wiresk Tools to your Flow

If you want to build a complex Flow, Wiresk offers a selection of tools at your disposal. Refer to Wiresk’s Tools

To add Tools in your Flow, Follow the same step as adding the Methods.

• On the Flow builder screen, click on the plus button (+) then just click on the “Tool” tab and select the Tool that you want to add.

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You can refer to “How to Create a Flow” tutorial for more detailed instructions, including step-by-step guidance on mapping and configuration.

Triggers and Methods Settings Copy Link

Configure SMTP2GO Triggers and Methods by Exploring the settings.