Emails under Settings lets you take control of the emails sent from your organization. You can configure your email preferences and customize email templates as well.

Sender Email Preferences

You can configure the email addresses that are used in the From field of emails sent from Zoho Books. However, these emails can sometimes land in your recipient’s spam folder, causing them to go unnoticed. This happens when the email address in the From field of an email belongs to a domain that does not have SPF and DKIM records.

What are SPF and DKIM records?

An SPF (Sender Policy Framework) record added to your domain allows recipient mail servers to confirm that Zoho Books has permission to send emails using your domain’s email addresses. Without this SPF record, the emails sent by Zoho Books on your behalf are more likely to be flagged as spam by the recipient’s email system. Therefore, setting up an SPF record helps ensure that your emails are recognized as legitimate and not treated as suspicious or unwanted.

DKIM(Domain Keys Identified Mail) is also used for preventing spam and allows the recipient email server to verify whether an email was sent and authorized by the owner of that domain. 

DKIM and SPF records are effective in preventing spam when used together. For this reason, Zoho Books will consider a domain as authenticated, only if it has both SPF and DKIM records.

Domain Classification

Zoho Books has classified domains into 3 categories to help you identify the email addresses, which if used in the From field of emails, could cause emails to go to the spam folder.

To find out which category your email addresses belong to:

The 3 categories of emails you will find in this page are:

Unauthenticated Domains

Domains without SPF and DKIM records configured are considered unauthenticated. If you use an email address from such a domain as the sender in Zoho Books, the email might be flagged as spam. To prevent this, Zoho Books automatically changes the sender’s email address to when sending emails on your behalf. This ensures your emails have a better chance of reaching the recipient’s inbox instead of being marked as spam.

Unauthenticated Domains

The address is used only in the From address of emails sent by Zoho Books, not in the Reply-To address. This means your customers will still see your name in their inbox, and when they reply, their email will be delivered to your own email inbox directly.

To use the email addresses under this category in the From field, you must authenticate their domains.

Authenticated Domains

Email addresses from domains with both SPF and DKIM records are trusted by Zoho Books and can be safely used in the From field of emails. You don’t need to worry about these emails being flagged as spam when sent from Zoho Books.

Authenticated Domains

Public Domains

If you use an email address that belongs to a public domain, such as Gmail or Yahoo Mail in the From address of emails sent from Zoho Books, it will be replaced with This is because SPF and DKIM records cannot be added for public domains and can only be added for domains that you own. 

Public Domains

If you still wish to use emails listed in this category in the From address, you can:

Switch to Sender Email Address

Now, email addresses from public domains will not be replaced with

Warning: We strongly recommend that you use instead of email addresses from a public domain to prevent your emails from ending up as spam.

Authenticate Domains

Emails listed under the Unauthenticated Domains section can be authenticated by adding SPF and DKIM records for their domains. To do this:

Authenticate Domains

Now, copy the SPF record from the pop-up that follows, and add it to your domain name provider’s (e.g. Daddy) DNS settings. 

Add SPF and DKIM Records

Next, copy the Host Name and Value for the DKIM record and add it to the DNS settings of your domain name provider. 

Once you’ve added both the SPF and DKIM records, click Validate .

Insight: It will take a while for your newly added records to reflect on the DNS server. If your validation fails, wait for a while and try again. Also, you can continue to use Zoho Books while the records are being validated.

A few points to note about adding SPF and DKIM records:

Now, your domain has been authenticated and it will be listed under the Authenticated Domains category. The emails from this domain can be used in the From address, without having it replaced or worrying about it landing in spam. 

Other Actions

You can perform a few other actions in the Sender Email Preferences page.

Mark Primary Contacts

A primary contact is the email address used for communication between your Zoho Books organization and Zoho. You’ll receive important updates about your Zoho Books subscription and usage-related emails at this address.

Also, this email address will be used as default in the From address of emails sent from Zoho Books, unless you change it manually while sending an email.

To mark a contact as primary, hover over an email address and click Mark as Primary Contact.

Mark Primary Contacts

Add New Sender Email Addresses

You will be able to add new sender email addresses and select them when you send emails from Zoho Books. To do this: 

Add New Email Sender Add New Email Sender

Now, a verification email will be sent to the email address that you added. Once the email address has been verified, you will be able to use it in the From field of emails sent from Zoho Books. 

Insight: Adding an email address this way will only enable the email address to be used for sending emails from Zoho Books and is not to be confused with adding users to your organization.


Resend Verification Emails

As mentioned in the previous section, when you add a new sender email address, a verification email will be sent to that email address. However, if the email was not received, you can resend the verification email. Here’s how:

Resend Verification Email

The verification email will be sent again.

Edit/Delete Email Addresses

You can choose to edit or delete your users’ email addresses from Zoho Books by clicking the Edit or Delete icons, respectively, which can be found on the right side of an email address.

Edit & Delete Email Sender Addresses

Email Insights

Emails are the conventional method of communicating with customers. However, it can be a hassle to check whether your customers have viewed the emails that you have sent them. The Email Insights feature in Zoho Books lets you keep track of the notification emails sent to customers. With this, you can know when a customer has opened a notification email.  

Scenario: Patricia sends an invoice via email to her customer, John, and requests immediate payment for it. However, John claims that he hasn’t received the invoice yet. Since Patricia has enabled Email Insights, she is able to check whether John viewed the invoice, along with the exact date and time when he viewed it. This helps her take further actions accordingly.

In this section:

Enable Email Insights

When you enable email insights, you will be able to track notification emails for:

To enable Email Insights:

Enable Email Insights


  • If you enable Email Insights, the emails sent from your Zoho Books organization will be tracked to know when your customer has viewed them.

  • If the email you sent has multiple recipients, the corresponding transaction will be marked as viewed when any one of them opens it.

Track the Status of Transaction Emails

After enabling email insights, you can view the status of the notification email in the following places:

Transaction List Views

You can view the status of notification emails in the transaction list view for the Invoices , Retainer Invoices and Quotes modules. The status will be indicated using icons that are placed near every transaction in the list. Here’s what the icons mean:

Track Emails in List View

Pro Tip: Select Client Viewed in the view filter dropdown to view a list of transactions that have been viewed by your customers from the customer portal and their email inbox.

Transaction Details Page

In the transactions details page, you can view the status of transactions under Comments & History in the top right corner of the page.

Track Emails in Details Page

Insight: If the email you sent has multiple recipients or has your users’ email addresses in the CC or BCC fields, the corresponding transaction will be marked as viewed when any one of them opens it.

How does Zoho Books track email activity?

Zoho Books uses web beacons (the industry standard followed by email service providers for tracking emails) to track emails sent to your customers. 

A small graphic, the size of one pixel, is embedded at the bottom of HTML emails sent from Zoho Books. When a recipient opens the email and chooses to display images in it, this tiny image is downloaded from our server. This download enables Zoho Books to track when your email was opened.

Warning: If your customer does not choose to display images for your email, Zoho Books will not be able to track the status. Hence, in some cases, Zoho Books could display the status of your email as being unopened, even if it was opened by your customers.

Email Templates

Email templates in Zoho Books let you create unique, customer-centric notification emails that can be sent to your customers. You can create email templates that reflect your branding and customize the email content accordingly. 

In this section:

Create Email Templates

Create Email Template Customize Email Template Edit Signature on Email Template

Customize Email Templates

You can personalize the content of email templates to reflect your business and branding better. Here’s how:

Customize Email Template

Associate Email Templates with Customers & Vendors

Add a personal touch to the notification emails sent to different customers. In Zoho Books, you can send client-specific notification emails to customers by assigning email templates for them. Once you have created email templates, here’s how you can associate them with a customer:

Associate Templates with Customers

Now, these templates will be set as default for this customer and will be used for all future emails. You can change these templates any time.

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