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
What can we do on our end to improve the Answer bot answers?
Hi, I'm using the Answer bot card in the Codeless bot builder. I've input several questions and their answers in the FAQ section to feed the Answer bot. The text is all in French, as this is the language our customers communicate in. I've tried testing
Zoho Books Sandbox environment
Hello. Is there a free sandbox environment for the developers using Zoho Books API? I am working on the Zoho Books add-on and currently not ready to buy a premium service - maybe later when my add-on will start to bring money. Right now I just need a
Taxes for EU B2B Transactions
Currently, ZC doesn't seem to have a procedure for validating VAT numbers of businesses purchasing in another EU state, and removing local VAT is valid. This is essential for all inter EU B2B trade.
How to upload file to Connect using API?
Hi there. I looked at the API documentation and nowhere did it mention how to use the API method to upload a file even though it is mentioned that it is possible to be done so. Please help.
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?
Group Tax in Service Line Items
Hi FSM Team! I noticed that when you update a tax in the service line item the group tax is not showing up as an option. Let me know what can be done thank you!
Zoho Campaigns - Why do contacts have owners?
When searching for contacts in Zoho Campaigns I am sometimes caught out when I don't select the filter option "Inactive users". So it appears that I have some contacts missing, until I realise that I need to select that option. Campaigns Support have
FSM Improvement Idea - Show an Import button when there is no data
I am setting up FSM for a client and I noticed that there is no option to import data, see screenshot below. Even when you click Create Contact there is only an option to Import from Zoho Invoice. It is only after you add at lease 1 record that the Import
Zoho FSM API Delete Record
Hi FSM Team, It would be great if you could delete a record via API. Thank you,
Insert auto number from main form into subform rows
Hello. I'm trying to take from my main form "order number" which i have setup as an auto generated number into every line created in my subform. So when a row is created in my subform i want the "order number " from the main form to be inserted automatically.
Adding a developer for editing the client application with a single user license
Hi, I want to know that I as a developer I developed one application and handed over to the customer who is using the application on a single user license. Now after6 months customer came back to me and needs some changes in the application. Can a customer
Function #4: Schedule Customer Statements
Regularly sending statements to customers is an imperative part of many business processes as it helps foster strong customer relationships and provides timely guidance on payments. While you can generate the statement of accounts and have it sent over
Limiting search or dependencies with an asterisk "*".
I have a form with several dependency fields with options still developing for each field. Since these options were developing and not yet ready to be a selection in the field, I placed a filter for the dropdown field. In this filter, I selected fields
Improved RingCentral Integration
We’d like to request an enhancement to the current RingCentral integration with Zoho. RingCentral now automatically generates call transcripts and AI-based call summaries (AI Notes) for each call, which are extremely helpful for support and sales teams.
Cross Data Center Support for 1:1 Chats with External Users
Hello Zoho Cliq Team, We hope you're doing well. We appreciate the recent enhancement that enables cross data center collaboration in external channels, which has already improved communication across distributed teams. However, we’ve noticed that this
Support Bots and Automations in External Channels
Hello Zoho Cliq Team, How are you? We actively use Zoho Cliq for collaboration, including with our external developers. For this purpose, external channels are a key tool since they work seamlessly within the same interface as all of our other channels
Answer Bot and Personalized Questions
Hi there, I have the same problem using the SalesIQ Answer Bot and the Zoho Desk Answer Bot (which really need different names, to be honest, in order to avoid confusion...) Customers that visit our website ask questions in the form of "What do you do?"
Handling Greetings/Small Talk at the Beginning of a Zobot Conversation
Hello everyone, I’m currently configuring a **Zobot** in Zoho SalesIQ and everything is working as expected, except for one specific scenario at the very beginning of the conversation. My target audience has the habit of starting with a **greeting or
Regex in Zoho Mail custom filters is not supported - but it works!
I recently asked Zoho for help using regex in Zoho Mail custom filters and was told it was NOT supported. This was surprising (and frustrating) as regex in Zoho Mail certainly works, although it does have some quirks* To encourage others, here are 3 regex
Importing a new list into campaigns
I'm in the middle of switching my email platform to campaigns. I have a list that I want to import, and it overlaps with my existing Zoho CRM list. The fields in my Zoho CTM are more robust. Will this new list that I upload into my campaigns overwrite
Client Script Payload Size Bug
var createParams = { "data": [{ "Name": "PS for PR 4050082000024714556", "Price_Request": { "id": "4050082000024714556" }, "Account": { "id": "4050082000021345001" }, "Deal": { "id": "4050082000023972001" }, "Owner": { "id": "4050082000007223004" }, "Approval_Status":
Webform & spam
Hi, We set up 2 webform on our website, fowarding the content to Zoho CRM. Since it has been opened up, we are getting lot of spam message (for now about 20 a day). To lower the amount of false new leads we added the captcha field and new enquieries are send to the Approval Leads list. However we still get some spam. Is there any "anti spam" mechanism built in Zoho CRM, or how is the best way to avoid these kind of spam ? Thanks
when I email a invoice how can i see it was sent and also were i can go to see all emails sent
when I email a invoice how can i see it was sent and also were i can go to see all emails sent?
Export Invoices to XML file
Namaste! ZOHO suite of Apps is awesome and we as Partner, would like to use and implement the app´s from the Financial suite like ZOHO Invoice, but, in Portugal, we can only use certified Invoice Software and for this reason, we need to develop/customize on top of ZOHO Invoice to create an XML file with specific information and after this, go to the government and certified the software. As soon as we have for example, ZOHO CRM integrated with ZOHO Invoice up and running, our business opportunities
Showing description in timesheet and timelogs.
I am wondering if it’s possible in version 5 of Zoho People to have the description show by default or with a manipulation on the user’s part. Let me show you what I mean. As you can see this is the view for the users. Now if they want to see the full
How can I see content of system generated mails from zBooks?
System generated mails for offers or invices appear in the mail tab of the designated customer. How can I view the content? It also doesn't appear in zMail sent folder.
New in Cadences: WhatsApp follow-ups, upgraded limits, and options for add-ons
Hello everyone, We're rolling out two key updates to help you engage better and scale smarter with Cadences in Zoho CRM. Reach customers on WhatsApp, directly from Cadences Previously, Cadences have enabled you to automate follow-ups through emails, calls,
CRM Blueprint Notification by Cliq
Dear Zoho team, In Workflow, there is nofication by cliq, but in blueprint, there is no option as cliq notification. I think it is very convenient to get notified by Cliq , as there are multi modules in apps, but we will always check Cliqs
Zoho People Attendance Regularization – Wrong Total Hours Displayed
While using Zoho People, I observed that the attendance regularization is showing wrong total hours when applied to past dates. For example, if a check-in is added at 10:00 AM and check-out at 6:00 PM for a previous date, the system sometimes calculates
Sync Contacts in iOS
What does the "Sync Contacts" feature in the iOS Zoho Mail app do?
Live webinar: Craft the ideal sales pitch deck with Show
Every great sale starts with a great story. And your pitch deck? That’s where the story takes shape. But too often, these presentations end up looking generic, overloaded with text, or lacking structure. The good news is, it's easier to fix than you think!
Project Statuses
Hi All, We have projects that sometimes may not make it through to completion. As such, they were being marked as "Cancelled". I noticed that these projects still show as "Active" though which seems counter intuitive. In fact, the only way I can get them
👋 Welcome to the Zoho MCP Community
Hello all, glad to have you here! This is your space for everything AI agents, MCP tools, and intelligent business apps. This community is for you — developers, partners, creators, and businesses exploring how agents can transform work. Whether you’re
Suitability of Zoho One (Single User License) for Multi-State GST Compliance & Cost Analysis
Hello Zoho Team, I am an e-commerce business owner selling on platforms like Amazon, Flipkart, and Meesho, and I'm currently using their fulfillment warehouses. I have two GSTIN registrations and am planning to register for an additional 2-3 to expand
DNS Manager
Where Can I find my DNS manager so I can link this to click funnels or AWEBER
Forwarder
Hi, I tried to add a forwarder from which emails are sent to my main zoho account email . However, it asks me for a code that should be received at the forwarder email, which is still not activated to send to my zoho emial account. So how can I get the
Forwarder
Hi, I tried to add a forwarder from which emails are sent to my main zoho account email . However, it asks me for a code that should be received at the forwarder email, which is still not activated to send to my zoho emial account. So how can I get the
How do I sync multiple Google calendars?
I'm brand new to Zoho and I figured out how to sync my business Google calendar but I would also like to sync my personal Google calendar. How can I do this so that, at the very least, when I have personal engagements like doctor's appointments, I can
Need to extract date from datetime field
I have a datetime field and need only the date part from it. I am unable to find a built-in function that would be <DateTime>.Date(). I don't think I want to go the string conversion route of converting the datetime to string and then parsing out values and create a date out of it. Any one out there has a better solution to this? Thanks in adavnce. Regards Moiz Tankiwala Smart Training & IT Solutions
How to Hide Article Links in SalesIQ Answer Bot Responses
I have published an article in SalesIQ, and the Answer Bot is fetching the data and responding correctly. However, it is also displaying the article link, which I don’t want. How can I remove the link so that only the message is shown?
Next Page