In contemporary email communication, email authentication plays a pivotal role in mitigating email fraud, spam, and phishing attacks. Brace yourself for a new level of security. Starting February 2024, Gmail and Yahoo will be implementing robust email authentication requirements to combat harmful messages and emphasize the crucial role of data security. This measure aims to prevent restrictions on sending rates, message blocking, and marking messages as spam.

Who will experience the effects?
The updated security guidelines apply to all users, particularly those who send 5000 or more than 5000 emails per day from ZOHO DESK. Not following these guidelines may lead to email delivery delays, blocked messages, or the categorization of emails as spam.
Not to worry. We are here to support you with the best possible solutions.
Basic details that every sender should be aware of
To safeguard your path in 2024, it is mandatory to follow the fundamental requirements, beginning with email authentications.
When utilizing a Gmail domain in the 'From' address, it is essential to configure the address with its dedicated SMTP for ensuring accurate mail delivery.
For recipients on gmail.com or googlemail.com, it is recommended to publish DMARC for the sender domain to enhance prompt mail delivery.
Verify with your own SMTP
In adherence to the new guidelines, reply emails sent from Zoho Desk with From addresses belonging to gmail.com, googlemail.com, to any domains may be bounced or marked as spam. Therefore, we kindly request all customers to configure these From addresses with your own SMTP verification and use TLS for transmitting email rather than Zoho SMTP. If the From addresses were verified previously with your own SMTP, we will continue using the same authentication for all notification emails sent from Zoho Desk.
Rolling out SPF & DKIM
SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) are vital email authentication protocols that protect against spam, phishing, and spoofing. SPF verifies the authenticity of emails from your domain, while DKIM confirms their source by validating authorized servers associated with sending domains. These protocols work together to validate emails, ensuring that they originate from legitimate sources and have not been tampered with during transmission. This implementation enhances the overall security of your email communications by reducing the risk of email spoofing, phishing, and other malicious activities.
Minimal Spam Rate
Maintain spam rates below 0.10% and ensure they never exceed 0.30% for optimal email deliverability.
Essential Requirements for Users Sending 5000 or More Emails Daily
Implement DMARC Policy
DMARC (Domain-based Message Authentication Reporting and Conformance) is an authentication technique that leverages the Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) to authenticate emails. This helps in preventing forging emails and engaging in unauthorized activities through them.
How DMARC Works:
1: Publish the DMARC policy outlining instructions for mailbox providers' receiving servers on how to handle emails that breach the policy.
2: Authenticate your sender domain by implementing SPF and DKIM.
3: The receiving server will apply the DMARC policy and execute the instructions specified in the policy.
4: The receiving server will send a report detailing how it handled the email to the reporting email address specified in the DMARC record.
Sample: DMARC record
v=DMARC1\; p=none\; rua=mailto:dmarc-aggregate@mydomain.com\; ruf=mailto:dmarc-afrf@mydomain.com\; pct=100
v: Signifies the DMARC version in use.
p: Signifies the policy established by the business.
rua: Specifies the URI for sending a consolidated report, including information on SPF and DKIM validation results, details about the sending and receiving domains, and the percentage of successful authentications.
ruf: Specifies the email address where the comprehensive SPF/DKIM failure report will be delivered.
pct: Denotes the percentage of emails subject to the policy application.
To prevent emails from being marked as spam, bounced, or experiencing delays in delivery, it is mandatory to set your policy (p) to none in DMARC record. “p = none”
If the policy (p) is set to "quarantine" or "reject," the emails will either be redirected to the spam folder or will not be delivered to the recipient, respectively.
Ensure DMARC Alignment
DMARC alignment pertains to the uniformity in the alignment of email authentication mechanisms, particularly SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail), with the domain asserted by the sender.
Sample DMARC - SPF Alignment
Sender Address | From: Header | Strict Alignment | Relaxed Alignment |
support@mycompany.com | support@mycompany.com | Pass | Pass |
support@admin. mycompany.com | support@mycompany.com | Fail | Pass |
support@mycompany.org | support@mycompany.com | Fail | Fail |

SPF Strict Alignment: A precise match between the SPF-authenticated domain and the domain specified in the header's "From:" address.
SPF Relaxed Alignment: The domain indicated in the "From:" address of the header should either match or be a subdomain of the SPF-authenticated domain.
Sample DMARC - DKIM Alignment
From: Header | DKIM d= domain | Strict Alignment | Relaxed Alignment |
support@mycompany.com | mycompany.com | Pass | Pass |
support@admin. mycompany.com | mycompany.com | Fail | Pass |
support@mycompany.org | mycompany.com | Fail | Fail |

DKIM Strict Alignment: A precise match between the relevant DKIM domain and the domain specified in the header's "From:" address.
DKIM Relaxed Alignment: The domain mentioned in the "From:" address of the header must either coincide with or be a subdomain of the SPF-authenticated domain.
Add ARC headers
Implement ARC (Authenticated Received Chain) authentication to avoid Gmail categorizing the email as unauthenticated, especially when utilizing frequent mail forwarding practices.
For additional information on ARC authentication, please refer to the official Google document linked here.
Set up SPF & DKIM
Mail authentication protocols such as SPF & DKIM should be implemented for organization sending emails to google or yahoo recipients.
What are the consequences if the deadline is not met?
Adhering to the sender requirements before the deadline is crucial for optimizing email delivery. Failure to meet the criteria detailed in this article may lead to your email not reaching its destination as intended or being categorized as spam.
Quick Summary:
The Update - Gmail and Yahoo are implementing robust email authentication standards from February 2024.
The Effects - Failure to meet these requirements may result in emails being categorized as spam or not reaching their intended destination.
The Action to be taken - Users sending 5000 or more emails daily must implement SPF, DKIM and publish DMARC policies.
Regards,
Sumaya Howth - Product Manager
The Zoho Desk Team
Recent Topics
How to retreive the "To be received" value of an Item displayed in Zoho inventory.
Hi everyone, We have our own Deluge code to generate a PO according to taget quantity and box quantity, pretty usefull and powerful! However, we want to reduce our quantity to order according to "To be received" variable. Seems like this might not even
Kaizen #211 - Answering your Questions | Using Canvas and Widgets to Tailor CRM for Mobile
Howdy, tech wizards! We are back with the final post in addressing the queries you shared for our 200th milestone. This week, we are focusing on a couple of queries on Zoho CRM mobile configurations and custom payment gateway integration. 1. Mobile SDK
Remove "Invalid entries found. Rectify and submit again" modal
Following up on a post from a few years back, but can the Zoho team consider either removing the 'Invalid entries found. Rectify and submit again' modal that displays for empty mandatory fields OR allow an admin to change it? I've built a custom error
Cadence reports as front-end reports
Hello everyone, We have built a cadence which is connected to the Leads module. There are 11 steps in total, 7 are automatic emails and 4 are tasks for the Lead owners. As admins, we have access to this (very nicely made) 'View Reports' tab where we can
Show elapsed time on the thank-you page?
Is it possible to display the total time a user spent filling out a Zoho Form on the thank-you? I’d like to show the difference between the `form submission timestamp` and the `start time` (currently have a hidden Date-Time field set to autofill the date
Email Integration - Zoho CRM - OAuth and IMAP
Hello, We are attempting to integrate our Microsoft 365 email with Zoho CRM. We are using the documentation at Email Configuration for IMAP and POP3 (zoho.com) We use Microsoft 365 and per their recommendations (and requirements) for secure email we have
I need to do crud with snippet html
I need to implement a form with an improved user interface. I would like to use snippets to build a CRUD that allows me to create and update records. How could I achieve this using snippets?
Allow Stripe Credit Card and Stripe ACH payment methods to be enabled separately on an invoice.
I need to be able to pick at the invoice level whether Stripe Credit Card and/or Stripe ACH payment methods are available. Currently, I'm not able to select from the two Stripe payment methods individually on an invoice. However, there are some larger
Incorrect “correct” password on email client apple mail
I have troubleshot this account several times. I have deleted and re added account. It keeps saying incorrect password. Can you check that it is not locked on your end?
Is it possible to lock editing subform rows?
Ideally editing would only be locked after the form has been updated but I still want them to be able to add new subform records at any time and they should be able to delete rows from the subform. It is a named subform if that's relevant however the
"Spreadsheet Mode" for Fast Bulk Edits
One of the challenges with using Zoho Inventory is when bulk edits need to be done via the UI, and each value that needs to be changed is different. A very common use case here is price changes. Often, a price increase will need to be implemented, and
What is the maximum file size of a video upload in Zoho chat?
Can I upload a 20 mb video file and share it with my colleagues?
Update a field in ALL all calls under a contact
HI guys! I have written some deluge code to update a field in my calls after i have comepleted the call, i need this field to update in all my scheduled calls as well that are comeing up. I just cant seem to get it to work, i have put teh code below,
Verifying Zoho Mail Functionality After Switching DNS from Cloudflare to Hosting Provider
I initially configured my domain's (https://roblaxmod.com/) email with Zoho Mail while using Cloudflare to manage my DNS records (MX, SPF, etc.). All services were working correctly. Recently, I have removed my site from Cloudflare and switched my domain's
Fat Download of Ulaa Browser
I just observed that Ulaa Browser is offering an one-capsule big download. These days it is a custom to offer a small bootstrap downloader and based on user customization options an appropriate download completes. And this is particularly common with
Cancelled Transfer order problem
Hello, We've canceled a transfer order, and we can't add the related items to a new Transfer Order. The system tells us that the bin doesn't have the required quantity, but when we check the item, it indicates that there are 2 units in the bin. It also
Billing Management: #8 Usage Billing in Logistics & Delivery Services
The logistics and delivery industry thrives on movement and precision. Every delivery completed, every kilometre driven, and every ton transported is a measurable activity. However, billing often lags behind. Many logistics companies still rely on fixed-rate
Tags for New Tickets
Hi there, When creating a new ticket, there is currently no way to choose a tag you would like to associate with the new ticket. Being able to associate a tag while creating a new ticket will be very beneficial as it will save time and flow well with
Zoho Desk: No Incoming email
Is Zoho Desk services down? No incoming email reflect to desk tickets.
Zoho CRM - Widgets | Update #3 : Introducing SDK V1.5 along with new ZDK Methods and ZRC Support
Hello everyone! Widgets in Zoho CRM just got a big upgrade! With the release of SDK v1.5, developers can now create more immersive widget experiences. This update elevates Widget development with new ZDK methods for easier interactivity and ZRC support
Unusual activity detected, account blocked
I am unable to send emails and am getting the error "Outgoing blocked: Unusual activity detected. To unblock your account, please and submit a request. Learn more.". I am unsure as to why this is happening since all my activity is legitimate, mainly confirmation
Unable to Send Emails – Outgoing Mail Blocked (Error 554 5.1.8)
Description: Hello Zoho Support Team, I am facing an issue with my Zoho Mail account ( admin@osamarahmani.tech ). Whenever I try to send an email, I get the following error: 554 5.1.8 Email Outgoing Blocked I would like to clarify that I have not done
Issue connecting Zoho Mail to Thunderbird (IMAP/SMTP authentication error)
Dear Zoho Support, I am trying to configure my Zoho Mail account on Thunderbird, but I keep getting authentication errors. Account: info@baktradingtn.com Domain: baktradingtn.com Settings used: IMAP: imap.zoho.com, Port 993, SSL/TLS, Normal Password SMTP:
Payment issue with Mail Lite plan – personal NIF not accepted as payment info
Hello, I have already contacted Zoho Support by email regarding this, but since I haven’t received any reply yet, I’m sharing it here as well to see if the community can help. I’m facing a payment issue for my Mail Lite plan. I have a personal account
Customer payment alerts in Zoho Cliq
For businesses that depend on cash flow, payment updates are essential for operational decision-making and go beyond simple accounting entries. The sales team needs to be notified when invoices are cleared so that upcoming orders can be released. In contrast,
Figma in Zoho Creator
Hi Team, I’m creating a form using Figma and would like to know how to add workflows like scheduling, custom validation, and other logic to it. Can anyone help me understand how to set this up for a Figma-based Creator UI form?
Not receiving Gmail confirmation email to send emails as Zoho account from Gmail
Hello! I'm having an issue with the "Send mail as" option on Gmail. I am not receiving the confirmation email on my Zoho Mail account. A few days ago, it worked, then it stopped, and now when I try to fix it, I simply don't receive the confirmation email
Restore lost Invoice!
Some time ago I tried to Upgrade from Invoice to Books. I not upgraded and staid n Invoice. Now i tried again and first i deleted the old trial of books. But now all is gone, PLEASE HELP!! i have no backup and i have to have at least 7 years data retention by law.
Zoho Desk Down
Not loading
lookup and integrated forms
I might be misunderstanding things but I wanted to integrate our zoho crm contacts into creator. I imagined that when I used the integration it would mirror into creator. It did brilliant. BUT We have a ticket form in creator that we want to use a lookup
Partially receive PO without partial Bill?
Most of our inventory is pre-paid. Let's say we purchase 30 pieces of 3 different items for a total of 90 pieces. It is common for our supplier to send us the items as they are ready. So we will receive 30 pieces at a time. How can I partially receive
2 users editing the same record - loose changes
Hello, I'm very new to Zoho so apology if this has been addressed somewhere i can't find. I have noticed the following: If we have 2 users put an inventory item in edit mode at the same time: say user1 click on edit and user2 while user1 is still in edit,
How to get the Dashboard page to be the first page when you open the app
So when it opens on a tablet or phone it opens on the welcome page, thanks.
How I set default email addresses for Sales Orders and Invoices
I have customers that have different departments that handle Sales Orders and Invoices. How can i set a default email for Sales Orders that's different than the default email for Invoices? Is there a way I can automate this using the Contact Persons Departments
Formula fields not refreshing until page is reloaded
I need help/advice about the formula fields and how I can refresh the information in real-time. We have two formula fields on our deals page which show calculated prices: One formula is in a subform which calculates the subform total + 1 other field amount
How can I setup Zoho MCP with Chat GPT
I can set up custom connections with Chat GPT but I cat an error when I try to set it up. The error is: "This MCP server can't be used by ChatGPT to search information because it doesn't implement our specification: search action not found" Thoughts?
API ZOHO CRM Picket list with wrong values
I am using Zoho API v.8. with python to create records in a custom module named "Veranstaltung" in this custom module I've got a picket list called "Email_Template" with 28 Values. I've added 8 new values yesterday, but if I try to use on of those values
Group Emails
I have synced Zoho CRM to Campaigns but there are certain email not synced. showing it is Group Emails, but this email ids belongs to different individuals. please provide a solution as i nedd to sync the same.
Enable Password Import option in ulaa browser
Dear Ulaa Team, I noticed that the Ulaa Password Manager currently offers an option to export passwords, but not to import them. This limitation poses a challenge for users like me who have stored numerous credentials in browsers like Chrome. Manually
"Is Zoho CRM customer" vs "Is linked with Zoho CRM"
Recently while building a Flow, I was setting up a Decision action following a Zoho Invoice Fetch record action. There were 2 choices that I had not seen as something I could manually action in Zoho Invoice: "Is Zoho CRM customer" and "Is linked with
Next Page