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Email channel configurations

The Administration/Configurations/Channels tab in Meiro Business Explorer enables businesses to configure channels for running campaigns. This guide provides a step-by-step tutorial on configuring the Email channel in Meiro Business Explorer.

Prerequisites for Emails

To work with emails, ensure that the following prerequisites are met:

  1. Configure the Email channel in the Administration/Configurations/Channel tab. Once the channel is activated, you will notice that the Meiro Email source is automatically generated in the CDP, along with system events and their attributes.

  2. Set the provider in the config of the ME instance and activate the emails endpoint in the Meiro Events (ME) system to collect email events such as email openings, link clicks, unsubscribes, etc.
  3. Meiro Events API connection must be set in the Administration/Configurations/Settings tab.

  4. Channels/Emails tabs must be enabled by the administrator for your user role.

Email provider

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Provider Choose an email provider from the options provided.
Server name the address of the SMTP server that will be used to send email messages. 
Port name specific port on which the SMTP server listens for incoming connections. The most commonly used port for SMTP is port 587, but other options are available, such as port 465 or port 25.
Username and password

the login credentials required to authenticate with the SMTP server. These are typically the same as the credentials used to access the email account that you're using to send email.


For Infobip, the SMTP username/password can be either the username/password used for the Infobip website or the "App"/API key associated with your account.

API key the authentication credential for connecting to the SMTP server and sending emails securely. This adds an extra layer of security to your email communication.

Additional configurations (depending on provider)

Base URL a unique web address for API requests that helps improve service quality by optimizing the routing of requests.
Account Key Unique key (identifier) for the account.

Remember: different email service providers may have slightly different processes for obtaining this information, so it's best to consult the documentation for the specific email service provider being used, e.g., Brevo, Infobip.

By default, the connection type is STARTTLS, which means that the CDP uses this protocol to encrypt the connection. STARTTLS is a security protocol used to encrypt the connection between the CDP and the SMTP server. This helps to ensure the privacy and security of the email messages being sent.  

Available SMTP Integrations

This section presents a selection of SMTP providers suitable for email communication, including Mailjet, MessageBird, Brevo, MailerSend, Infobip, Mailgun, SendGrid, and Omnivery.

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Configuration of email stitching category

At the next stage, choose the stitching category related to emails, keeping in mind that it cannot be changed later on. The email stitching category helps to associate email-related events with the correct email addresses.

You can either pick an existing category related to emails or create a new one using the “add stitching category” button if a suitable category is unavailable.

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Remember: Be sure to use stitching rules based on the shared identifier message_id to link email-related events. This identifier is part of the URL query parameters of the email link click.

Verified Senders

In the "Verified Senders" section, you need to configure the email addresses that will be available for use as sender and reply addresses in your email campaigns. When creating an email, you can select from a list of email addresses you have previously verified in the configuration section. If you have marked a default email address, it will automatically fill in the email creation form.

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To add a new email address to your list of verified senders, fill in the email address in the designated field and click the 'add address' button. Every email address you add must be verified by following a link sent to that email address.

Remember: you can remove an email address from the list of verified senders if it is not currently being used in any email campaign. Additionally, at least one email address must be configured in the "Verified Senders" section. Setting Stitching Rule

To enable the inclusion of email events in the profile identity graph, the analyst must establish a stitching rule for the Meiro Email Message ID attribute and associate all pertinent email events with it.

Opt-in email customization

In this section, it is possible to configure opt-in email parameters and its page. A default template design will be provided, allowing you to get started without defining your own template immediately after channel activation. 

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Email Subject


A brief description that summarizes the topic or purpose of an email message, which is displayed at the top of the email message, above the body of the email. 

The limit is 150 characters.

Email Preheader


The text that appears next to or below the subject line in the inbox. The limit is 100 characters.

Sender address


The email address will appear as the sender of the email. You can select from a list of email addresses that you have previously verified in the configuration section.

Sender name 


This field allows optionally providing the sender's name that recipients will see when they receive the email.

Reply address


Select one from the dropdown list of configured emails. 

The email address will be shown to recipients when they hit the "Reply" button in the email.

Send test to


To start testing the appearance of opt-in email, you need to fill in the email addresses of the testing users (e.g., example@gmail.com) in the field and click the “Send” button.

Content of Email

(required HTML or Visual email)

The default template design will be applied after you activate the Email channel. You may proceed with changing the template to your needs. Select the desired email type (HTML or Visual editor guide) and fulfill the content.

When creating a customized opt-in template, it's essential to follow these specific requirements for the confirmation link:

  • The confirmation link must contain the class name meiro-opt-in-confirm-link;
  • It can either be an <a> tag or a wrapper tag containing at least one <a> tag.
  • The <a> tag may have one of the following href attributes:
    • href with a valid URL to the custom “thank you” page
    • href="" (an empty href attribute)
    • href="#" (an href attribute with the value "#" indicating no action)
    • no href attribute at all

To add class to the text block, use HTLM mode as on the example below:

For adding a class to the image or button content block, expand the 'extra' section and fill the field with the class name meiro-opt-in-confirm-link.


Remember: once you switch to a custom opt-in template, you cannot go back to the default template.

Remember: the attribute picker has been removed from opt-in customization, and manual insertion of attributes should be avoided. This is due to the impracticality of using attribute placeholders when requester identities are typically unknown, leading to empty values in the message.

Learn more: about the content block available in the Visual editor guide

Unsubscribe customization

In this section, you can set up the unsubscribe link that will be included at the bottom of each campaign email

To create a custom unsubscribe link, it's crucial to adhere to the following specific requirements:

You can assign a class to a text block within HTML mode, and for other elements, you can include the class in the 'extra' section.

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After setting all sections, the email channel will be configured and activated for use.

Email tech setup for the best deliverability 

1. Consider a separate domain for emailing

If you send many marketing emails, consider using a subdomain (e.g., mail.yourdomain.com) or a different domain altogether for these communications. This can help protect your primary domain's reputation if there are deliverability issues with the marketing emails.

When to use email subdomains:

  • To separate transactional, promotional emails, and informational newsletters from each other.
  • To track the analytics, such as deliverability rate, more accurately.
  • To separate emails from different teams, such as global, events, sales, and outreach teams, so that they can analyze their metrics separately.

Example of Apple: no_reply@email.apple.com ; news@insideapple.apple.com

Example of Google: comments-noreply@docs.google.com ; no-reply@accounts.google.com 

2. Shared vs. private IP address

Choosing between shared and dedicated (private) IP addresses for email sending largely depends on your sending volume, budget, and desire for control over your sending reputation. Both options have their advantages and disadvantages. Let’s explore them:

Shared IP Address


  • Cost-Effective: Shared IPs are usually less expensive or included in the pricing of email service providers.
  • Reputation Management: The email service provider manages the reputation of the shared IP, so you don’t have to manage it yourself.
  • Low Volume Sending: For senders who don’t send large volumes of email, a shared IP can provide the benefit of a good sending reputation (assuming the ESP enforces good sending practices for all users).


  • Shared Reputation: Your deliverability can be affected by the practices of other senders using the same IP address.
  • Potential for Blacklisting: If another sender using the shared IP violates sending best practices, the IP could be blacklisted, affecting your deliverability.
Dedicated (Private) IP Address


  • Control Over Reputation: With a dedicated IP, you have full control over your sending reputation. Your practices directly impact your deliverability without interference from other senders.
  • Consistent Deliverability: High volume and/or enterprise senders can ensure more consistent deliverability by maintaining their IPs.
  • Customization: It can be configured and managed according to your specific sending needs and practices.


  • Cost: Dedicated IPs come at an additional cost, which might not be justifiable for small senders.
  • IP Warm-Up Required: New dedicated IPs must be “warmed up” by gradually increasing sending volume over time to establish a good reputation.
  • Ongoing Management: The ongoing management and monitoring of a dedicated IP’s reputation are your responsibility.
  • Small to Medium Senders:
    • If you’re sending low to medium volumes of email and have a tight budget, a shared IP may be more suitable.
  • Large Volume Senders:
    • If you send high volumes of email, especially transactional emails, a dedicated IP might be more suitable to protect your sender reputation.
  • High-Stakes and Critical Transactional Emails:
    • If your emails are mission-critical (like password resets, order confirmations), a dedicated IP could be worthwhile, even at smaller volumes, to control deliverability tightly.
  • Hybrid Approach:
    • Some businesses opt for a hybrid approach, using dedicated IPs for transactional emails (to protect these high-priority messages) and shared IPs for bulk or promotional emails.

3. Authenticate Your Domain:

3.1 SPF (Sender Policy Framework): Helps servers verify that emails coming from a domain are legitimate.

The Sender Policy Framework (SPF)

An SPF record is a piece of text in the DNS settings of your domain (yourbusiness.com) that protects it from being spoofed (misused by others). Many spam filters and mail servers use an algorithm to mark emails as wanted or unwanted, often based on this record. The Sender Policy Framework tells the receiving mail server (like Gmail) that the domain is used by someone who's allowed to do so.

  • Email without SPF
    Email communications happen between two mail servers: yours and the one your recipient uses - the SMTP protocol. Your server hands over the information you want to send to your recipients. The problem, however, is that a sender can use any name or sender address. We could easily fake the sender and say we're Google, Amazon, or any other big brand, a.k.a. spoofing.
  • Email with SPF
    With the Sender Policy Framework (SPF) in place, the receiving server can check whether the email you send actually comes from you. The SPF record holds a list of IP addresses that are allowed to send on your behalf. If the sender sends the email from an IP address that isn't on that list, it will not pass the SPF check.

The general manual approach to setting up the SPF can look like this:

1. Determine Your Sending IP Addresses:
Identify all IP addresses and services that send email on behalf of your domain. This includes your email service provider, marketing automation platform, helpdesk software, etc.

2. Create Your SPF Record:
The SPF record is a type of Domain Name Service (DNS) record.
An SPF record looks something like this:
v=spf1 ip4: ip4: include:exampleesp.com -all

In this example:

  • ip4: and ip4: are IP addresses authorized to send email on behalf of the domain.
  • include:exampleesp.com indicates that the email sending IPs of exampleesp.com (e.g., an email service provider) are also authorized.
  • -all indicates that only the IP addresses and domains specified in the SPF record are permitted to send email for the domain. Emails from all other sources will be considered unauthorized.

3. Add or Update SPF Record in DNS:
Log into your domain's DNS management platform.
Look for a section to manage DNS records.
If you already have an SPF record, update it to include the new values. If not, create a new TXT record.
Set the hostname or subdomain field to @ or leave it blank (depending on your DNS provider).
Paste your SPF record into the value or content field.

Remember: Every Email sending provider has more or less an automated onboarding process for SPF setup. 
Check their documentation, e.g., Infobip, Brevo.

3.2 DKIM (DomainKeys Identified Mail): Allows the receiver to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain.

For most Email sending providers: They will generate the DKIM keys for you within their platform. You'll typically find this in the domain/email authentication settings.

Warning: follow the Email provider's info with a specific process, e.g., Infobip, Brevo.

Manual generation: If you're not using a mainstream provider or need to do this manually, there are online tools that can help you generate DKIM keys.

2. Configure Your DKIM Record:
Once the keys are generated, you'll have:

  • A Selector: A simple string used to distinguish between multiple DKIM records on a single domain.
  • A Public Key: This will be part of the DKIM record you add to your DNS.
  • A Private Key: This stays on your email server and should be kept secure. It's used to sign outgoing email.

Your DKIM record will look something like this (format may vary based on the provider):
selector._domainkey.yourdomain.com. IN TXT "v=DKIM1; k=rsa; p=yourPublicKeyHere"

Replace selector with the actual selector provided by your provider and yourPublicKeyHere with the public key.

3. Add DKIM Record to DNS:

Log into your domain's DNS management platform.
Create a new TXT record.
For the hostname or subdomain field, enter the full name, e.g., selector._domainkey (it might vary based on your DNS provider).
Paste the DKIM record value into the appropriate field.

Showcase of Infobip-generated records to update DNS:

4. Verify Your DKIM Record:

Wait for the DNS to propagate (this might take anywhere from a few minutes to 48 hours).
Usually, email providers also include a validation checker when setting the authentication.

Or you can use a DKIM validation tool to check the record. Simply enter your domain and the selector.
Additionally, you can send a test email to a service like Mail Tester, which will give feedback on your DKIM and other email settings.

3.3  DMARC (Domain-based Message Authentication, Reporting, and Conformance): Builds on SPF and DKIM protocols to give domain owners the ability to protect their domain from unauthorized use.

DMARC is another text record located in DNS, specifically in the sending subdomain of the _dmarc.example.com domain, and should contain a p= flag meaning "policy". As a domain owner, you can enforce a policy for your DMARC record to define what should happen to email messages that fail the DMARC authentication checks.

You can choose between three different policies:

  • none: Takes no action on the message and delivers it to the intended recipient.
  • quarantine: Marks the message as spam and sends it to the recipient's spam folder. Recipients can review the spam message to identify legitimate messages.
  • reject: Rejects the messages. With this policy, emails usually return soft bounces.

Learn more: about DMARC and setup here.

General approach to setup DMARC:

1. Ensure SPF and DKIM Are Already Set Up:

Before implementing DMARC, ensure you've correctly set up and tested both SPF and DKIM for your domain.

2. Create Your DMARC Record:

A basic DMARC record might look like this:

v=DMARC1; p=none; rua=mailto:reports@yourdomain.com

In this example:

  • v=DMARC1: This defines the version of DMARC.
  • p=none: This is the policy. It can be set to none, quarantine, or reject. Starting with none is advised for monitoring before enforcing stricter policies.
  • rua=mailto:reports@yourdomain.com: This specifies where the aggregate reports should be sent. These reports provide an overview of the DMARC authentication status for emails sent from your domain.

3. Decide on a Policy:

  • none: Take no specific action; use this to just monitor the results.
  • quarantine: Place unauthenticated emails in the recipient's spam/junk folder.
  • reject: Reject unauthenticated emails.

For the initial setup, it's recommended to start with the none policy to monitor how many emails would be affected without actually affecting deliverability. Once you're confident in the setup, you can update to quarantine or reject.

4. Add the DMARC Record to DNS:

  • Log into your domain's DNS management platform.
  • Create a new TXT record.
  • For the hostname or subdomain field, enter _dmarc. For some DNS providers, this might be _dmarc.yourdomain.com.
  • Paste the DMARC record value into the appropriate field.

5. Verify Your DMARC Record:
Wait for DNS propagation. Use a DMARC validation tool like MXToolbox or a similar platform to verify that the record is correctly set up.

6. Monitor Reports:
Review the DMARC reports sent to the email address specified in the rua tag. Tools and services like DMARCIAN can help parse and interpret these reports.

The reports give insights into which services are sending mail on behalf of your domain and whether those emails are passing SPF, DKIM, and DMARC.

An important part of the DMARC mechanism is the reporting of what has happened to the messages for each recipient. You can receive aggregate reports at set intervals.

Aggregate reporting
An aggregate report contains statistical information about the messages you have sent us in a certain time interval and how these messages were evaluated. You activate this aggregate reporting by adding the parameter rua in the DNS record, where you specify the target email address for sending reports, e.g., rua=mailto:mail@adress.com.

By default, you usually receive daily reports. If you want to receive reports for a longer time interval, change the record by adding the ri parameter and filling in the desired interval in seconds. For example, parameter ri=604800 will send reports every 7 days.

The reports are sent in XML format. 

7. Adjust Policy As Needed:
After monitoring and ensuring legitimate emails are passing DMARC, consider updating the policy from none to quarantine or reject.

If you notice legitimate services are failing DMARC, you might need to adjust your SPF/DKIM configurations or work with the service provider to ensure they're correctly authenticating email.

4. Warm Up IP Addresses:

If you are using dedicated IP addresses, start by sending a low volume of emails and gradually increase the volume over time. This helps in building a good sending reputation.

Warming up IP addresses is a best practice for any use case involving email marketing or transaction email sending. During an IP warm-up period, email sending volume is slowly increased. This allows sending patterns to appear more natural to mail service providers and anti-spam services. The recommended schedule for an IP warm-up strategy is to start with a maximum of 50 emails per day to avoid spam filters, and then double that value every 3 days. This schedule provides the best opportunity to maintain a healthy IP reputation while avoiding blacklists.

5. Clean Your Email Lists:

  • Regularly prune inactive subscribers and remove hard bounces.
  • Consider using double opt-in to ensure that the email address is valid and the recipient truly wants to receive your emails.

6. IP address blacklist check

Regular blacklist checks are essential, especially for businesses and organizations that rely on email communications. An IP address that is blacklisted can lead to emails being undelivered, which could affect business operations, customer relationships, and reputation. Using tools like multirbl.valli.org provides an efficient way to perform these checks.