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
Dealing with API responses where integers have more than 16 digits
Hi there How do I deal with an api response contaning an int or float with more than 16 digits (before any decimal places for a float). I constantly receive the response "Unable to cast the 'BigInteger' value into a 'BIGINT' value because the input is
Can not add fields to a Section
I feel like I'm missing something obvious: I can add new Sections to my form but I can not add fields to the Sections. I've tried fields already on the form as well as dragging and dropping new fields into the Section but nothing will go into it. What
Elevate your CX delivery using CommandCenter 2.0: Simplified builder; seamless orchestration
Most businesses want to create memorable customer experiences—but they often find it hard to keep them smooth, especially as they grow. To achieve a state of flow across their processes, teams often stitch together a series of automations using Workflow
To Zoho customers and partners: how do you use Linked Workspaces?
Hello, I'm exploring how we can set up and use Linked Workspaces and would like to hear from customers and partners about your use cases and experience with them. I have a Zoho ticket open, because my workspace creation fails. In the meantime, how is
[Webinar] Automate sales and presales workflows with Writer
Sales involves sharing a wide range of documents with customers across the presales, sales, and post-sales stages: NDAs, quotes, invoices, sales orders, and delivery paperwork. Generating and managing these documents manually slows down the overall sales
Can't change form's original name in URL
Hi all, I have been duplicating + editing forms for jobs regarding the same department to maintain formatting + styling. The issue I've not run into is because I've duplicated it from an existing form, the URL doesn't seem to want to update with the new
Need Inactive accounts to be visible in Reports in Zoho Books
I N=need Inactive accounts to be visible in Reports in Zoho Books to do recons of the accounts but when i see the same they are not visible in the Accountant - Account Transactions report
unblock e-mail
please unblock my e-mails info@meatnews.gr and myrtokaterini@meatnews.gr
Add Zoho Mail for users who do not need Zoho One
We have licenses for ZOho One for teams that need to use the suite of products that Zoho One offers. We have 8 more people who only need email access and we would like to add just a Zoho Mail. They do not need the Zoho One license. We are currently
Zoho Projects - Q2 Updates | 2025
Hello Users, With this year's second quarter behind us, Zoho Projects is marching towards expanding its usability with a user-centered, more collaborative, customizable, and automated attribute. But before we chart out plans for what’s next, it’s worth
ZML vs HTML Snippet - which is better?
Are there certain use cases where one is better than the other?
Auto CheckOut Based On Shift.
This Deluge script runs on a scheduled basis to automatically set the 'Actual_Check_Out' time for employees who haven't manually checked out. If the current time is past their scheduled 'Shift_End_Time', the script updates the check-out time to match
How to remove some users in zoho accounts
How to remove some users in Zoho accounts.
how to differentiate if whatsapp comes from certain landing page?
I create a Zobot in SalesIQ to create a Whatsapp bot to capture the lead. I have 2 landing pages, one is SEO optimized and the other want is optimized for leads comes from Google Ads. I want to know from which landing page this lead came through WhatsApp
Customizing Form Questions per Recipient Group in Zoho Campaigns/Forms
Hello everyone, I would like to ask if it’s possible in Zoho Campaigns or Zoho Forms to send out a campaign where the form questions can be customized based on the group of recipients. Use case example: I have prepared 20 questionnaire questions. For
Infinite loop of account verification
Hi I can't do anything on my zoho account. I always get this message Hi Sheriffo Ceesay As a security measure, you need to link your phone number with this account and verify it to proceed further. When ever I supply the details, it displays that the number is associated with another account. I don't have any other account on zoho so this is really annoying.
Load PO_Date field (Purchase Order) with current date in Deluge
Hi, I'm not a full time developer, just helping to customize our CRM, in the small company I work for. There must be something wrong with me, because I can't do something so simple as complete a field with the current date in a function using Deluge.
Zoho CRM in Microsoft Power Automate Custom Connector
Hi everyone, I’m building a Power Automate flow that integrates Microsoft Bookings with Zoho CRM. The goal is to automatically create a meeting (event) in Zoho CRM whenever a new appointment is booked via Microsoft Bookings. To achieve this, I created
Spell check sucks
Come on guys, it's 2024 and your spell check is completely retarded. You gotta fix it.
How to include total km for multiple trips in expense report.
Whenever I create a mileage report it only shows the total dollar amount to be reimbursed. The mileage for each individual trip is included but I also need to see the total distance for all trips in a report? How do I do this?
New in Cadences: Option to Resume or Restart follow-ups when re-enrolling records into a Cadence, and specify custom un-enrollment criteria
Managing follow-ups effectively involves understanding the appropriate timing for reaching out, as well as knowing when to take a break and resume later, or deciding if it's necessary to start the follow-up process anew. With two significant enhancements
Outgoing blocked: Unusual activity detected.
I just made payment for my Zohomail Today and have been debited so i will like to be Unblocked because this is what it says (Outgoing blocked: Unusual activity detected) Thank you i await your swift responses
Zoho One Login Issue - Unable to receive OTP
Hi Support Team, I am experiencing a unique login issue with Zoho One. I am attempting to log in from India using Zoho Login credentials provided by a USA-based client. Their Zoho account is hosted on a US data center. After entering the username and
Question Regarding Managing Sale Items in Zoho Books
Good day, I was wondering about something. Right now, Zoho Books doesn’t seem to have a way to flag certain items as being on sale. For example, if I want a list of specific items to be on sale from October 1 to October 12, the user would have to export
In the Zoho Creator Customer Payment form i Have customer field on select of the field Data want to fetch from the invoice from based on the customer name In the Customer Payment form i Have subf
In the Zoho Creator Customer Payment form i Have customer field on select of the field Data want to fetch from the invoice from based on the customer name In the Customer Payment form i Have subform update Invoice , there i have date field,Invoice number
Problem of Import Client Users From CRM and or Expense
I am premium plan user on Projects. I have about 500 customers on Expense and CRM that integrated with each other. According to at below link, I am trying to import clients from CRM, system not allowed to select any customer. If I import from Expense,
Unable to see free plan option
Hello Zoho Support Team, I hope you are doing well. I am trying to sign up for Zoho Mail, but I am unable to see the option for the free plan. Could you please guide me on how I can access or activate the free plan? Thank you for your assistance.
unblock my zoho mail account. outlines@zoho.com
please unblock my zoho mail account, outlines@zoho.com
domain not verified error
Hi when i try to upload a video from zoho creator widget to zoho work drive iam getting domain not verified error.I don't know what to do .In zoho api console this is my home page url https://creatorapp.zoho.com/ and this is my redirect url:www.google.com.Iam
equest to Disassociate Bigin from Zoho One and Migrate to Standalone (Upgrade to Bigin Premier – 3 Seats, Annual)
Dear Zoho One Support Team, I’m writing to request your assistance to disassociate (remove) the Bigin application from our Zoho One organization while preserving all existing Bigin data. After the disconnection is successfully completed, we intend to
SMTP email sending problem
Hello, I've sent emails before, but you haven't responded. Please respond. My work is being disrupted. I can't send emails via SMTP. Initially, there were no problems, but now I'm constantly receiving 550 bounce errors. I can't use the service I paid
billing
hi, I am being billed $12/year, and I can't remember why. My User ID is 691273115 Thanks for your help, --Kitty Pearl
Syncing Zoho Forms with Bigin - Embedding issue?
Hello everyone, I created a Zoho Form for a page on my GoDaddy website to collect leads, which then transfers the data to Bigin. However, I'm facing an issue where it doesn't seem to work properly. I've integrated Zoho Forms with Bigin and tried embedding
How to add receipts
How to add receipts
Unable to enable tax checkboxes
Hi Zoho Commerce Support, I'm writing to report an issue I'm having with the tax settings in my Zoho Commerce store. I've created several tax rates under Settings > Taxes, but all of them appear with the checkbox disabled. When I try to enable a checkbox,
Does Zoho Learn integrate with Zoho Connect,People,Workdrive,Project,Desk?
Can we propose Zoho LEarn as a centralised Knowledge Portal tool that can get synched with the other Zoho products and serve as a central Knowledge repository?
Zoho Commerce - Enable Company Name and Tax Number collection for B2B orders in Global Edition
Please enable Company Name and Tax Details option on checkout settings in Zoho Commerce Global Edition. It is still important to collect Company Name and Tax Number for B2B sales in many countries. My business is based in Ireland (in the EU) and I have
Zoho CRM: how can I control which contacts to sync with Outlook?
I was just playing around syncing contacts from Zoho to MS Outlook (MS365 account.) The problem is our firm has hundreds of thousands of contacts and I don't want to bury my contacts list in outlook. Any help with this is greatly appreciated.
ZohoSign and ZohoBooks Integration/Workflow
Hello All, We utilize ZohoSign for signatures on tax eFiles. We utilize Dynamic KBA. Additionally, we use ZohoBooks for invoicing for these services. Is there a way to accomplish the following: Send a copy of the Tax Return, Invoice and eFiles in one
Manage monthly tasks with projectsf
Hi All I run a finance and operations team where we need both teams to complete monthly tasks to ensure we hit our deadlines. Can Zoho projects be used for this. There many finance focused tools but we have Zoho one so want to explore Thanks Will
Next Page