2024 Email Authentication Standards: Elevating Security with Google and Yahoo

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.

More about Guidelines for all senders

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.

Read more about Guidelines for Users Sending 5000 or More Emails Daily

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

• Topic Participants

• Sumaya Howth

  

• Stéphane LAMBERT

• Jeff | Zoho Desk

  

• Shivani | Zoho Desk

  

• Sticky Posts

• 2024 Email Authentication Standards: Elevating Security with Google and Yahoo

  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

• Using Agent Email Address as From Address

  Currently, while replying to a ticket, it is possible for agents to choose their own email addresses as 'from' addresses. Although we built this just for that little extra flexibility, in hindsight, it hasn't figured much in conventional usage.  Almost all businesses prefer that responses to their customers' tickets be sent from the common support/service email address and NOT from those of individual agents. During personal interactions at events, some of you have even made passing mentions about

• Edit and Delete options in Comments

  A lot of teams have been using ticket comments extensively to collaborate everyday. Notification Center further improved this experience by bringing real-time updates. As we continue to build more improvements to this experience, we've shipped a small-yet-important

• Webinar 2: Supercharged customer support for growing business

  Join us for this webinar and learn how to step up your support game using a real-time communication platform to generate happier, more successful customers. In this live webinar, we will will discuss the importance of SalesIQ for your support team and how it can help you:  Understand your customers better and their journeys to proactively support and engage them even before they ask for help.  Integrating real time conversations into Zoho Desk’s Support, providing a conversational customer service

• Customize Colors of your Customer Self Service Portal

  You asked for it. We heard you. We're happy to roll out the most sought after feature request, Customizing the Colors of your Customer Self-service Portal. Now you can set the color of your customer portal to mimic your company's web site, so that your customers visiting the portal will not feel alienated by the default theme.  Go ahead and configure the color of the header, tabs, fonts and background according to your needs. You can either choose between default color themes like Blue, Grey, Green

• Recent Topics

• printing individual labels - Dymo LabelWriter

  I am trying to print individual labels to my Dymo LabelWriter - has anyone done this? Latest Update (December 2025): The Canvas Print View is now available! We encourage you all to try it out and share your feedback with us. Learn more here: Zoho CRM

• Zoho Creator for Agriculture

  Greetings, I am starting to work on  Zoho Creator specifically for the agricultural field, any recommendations, tips or ideas that might be helpful ? Also, if you are interested by any means in working on such project, kindly contact me. The project is

• Custom Print Layout

  I would like to create a custom print layout of a Lead or Contact. Is there a way to do that? What I mean is that if I'm viewing a specific lead or contact I'd like to be able to print or export that lead/contact and only print and/or export certain information.

• Print View

  Nothing happens when I'm in a module , ie; Contacts, and I hit the Print View Button. Even when it does come up and say "loading", nothing loads

• Get Holiday ready with Zoho Mail's Offline mode

  With the holiday season right around the corner, this is the perfect time to get ready to unplug, relax, and enjoy a well-deserved break. In addition to preparing yourself, you can also make sure your organization members are set for their time away from

• Zoho Flow Credits

  Hi , I would like to ask the reason why every time I added plus credit but few days later I will return back to default? (as below I add credit to 3000 but today It change back to 1000) Most important is, when the credit fully used, not any reminder to

• Zoho CRM Kiosk issues

  Firstly this is for a system on the AU servers if that makes a difference. Issues are as follows (For Kiosk): 1. Re-ordering fields in the screen builder is broken. The fields seem to be re-ordering themselves, unless you order everything by moving the

• Zoho Books emails suddenly going to Spam since 11 Nov 2025 (Gmail + now Outlook) — anyone else?

  Hi everyone, We migrated to Zoho Books in July 2025 and everything worked fine until 11 Nov 2025. Since then, Zoho Books system emails are landing in customers’ Spam (first Gmail, and now we’re seeing Outlook/Office 365 also starting to spam them). Impacted

• Adding Multiple Files to a Zoho Vault Entry

  There is a old blog post talking about adding multiple file attachments to one Zoho Vault Secret: https://www.zoho.com/blog/vault/introducing-new-features-in-zoho-vault-powerful-password-sharing-wider-storing.html Is that still possible, I can see how

• Zoho Voice lance BYOC (Bring Your Own Carrier) : intégrez votre opérateur

  Pour accompagner sa croissance, une entreprise a besoin d’une infrastructure téléphonique flexible et évolutive. Les solutions de téléphonie s’adaptent aux exigences du centre de contact, tout en intégrant aisément les opérateurs locaux de votre choix.

• Email Template Edits Not Saving

  I can make an edit, click save, and see the blue bar annimation at the top, but the edits don't actually save. Important, because my email templates are now broken and clients are receiving bad emails. Tried on Chrome, Firefox and IE.

• Default Ticket View - Table?

  Guys, We mostly use the table view to queue tickets. Maybe I am missing it - but how can I set that view as 'default" for all our agents? Thanks JV

• Duplicate customers being created in Desk

  Hi I've trying to work out why I've getting duplicated customers being created in my desk. I have an external booking system that generates an email when I get a customer booking a job. A booking email gets sent to Desk where I manage the booking and

• Can I have different users see different pick list values for Potential Stage?

  We have some users focusing on new business and others focusing on existing business, and they follow different sales processes/cycles, so we would like them to see different pick list values for Stage (eventually leading up to Closed Won/Lost in both cases).   And just to keep it interesting - some of these users will of course do a combination, so would need to see one pick list for their New business potentials and a different pick list for their Existing business ones.   Salesforce does this

• Links in Instagram

  Hi there, I have been using Later for a while now but keen to come back to Zoho Social as Later doesn't offer tagging of pages on Facebook but they offer something Zoho doesn't. You can add a link to your bio which opens up your profile feed where images

• Tracking Snippet not working in Zoho Marketing Automation!

  First off, the fact that you have to wait about 12-24 hours for every response is terrible. How are we supposed to conduct business? Second, we have been trying for several days to get the Tracking Code Snippet in marketing automation to work, to no avail.

• email moderation issue when email is sent in the name of a mail group

  Symptom: an email that is sent by a mail group moderator in the name of a moderated mail group is held back for approval. Reproduction: Create a moderated mail group with members and moderators. Allow that mails can be sent in the name of the group (extended

• Is there any way to send an Excel received by email to Dataprep?

  Every day I receive an email alert with an Excel file that I want to process through a Dataprep pipeline. To do this, I need to: -Save the file to disk -Open the pipeline -Run the pipeline -Update the source -Several clicks to select and open the saved

• Recruit paid support?

  Hi all, Could anyone who has paid support package advise if it provides value for money with regards to support response times? Exploring the idea as unfortunately when we have faced issues with Recruit it has been a 7+ day timescale from reporting to

• Using IMAP configuration for shared email inboxes

  Our customer service team utilizes shared email boxes to allow multiple people to view and handle incoming customer requests. For example, the customer sends an email to info@xxxx.com and multiple people can view it and handle the request. How can I configure

• Add Lookup Field in Tasks Module

  Hello, I have a need to add a Lookup field in addition to the ones that are already there in the Tasks module. I've seen this thread and so understand that the reason lookup fields may not be part of it is that there are already links to the tables (

• Hotmail is blocking the zoho mail IP

  Greetings, Since last Tuesday (5 days ago today) I wrote to Zoho support and I still haven't received a single response (Ticket ID: 2056917). Is this how you treat people who pay for your email service? I am making this public so that those who want to

• Read webpage - MSXML2.ServerXMLHTTP

  I have the following VBA script, put together from various sources (mainly zoho forum/help/support, so it once worked, I guess): private Sub GetListOfSheets() Dim url As String Dim xmlhttp As Object Dim parameters As String Dim html As String range("B1").value

• Zoho Creator Form Search

  I'm new to Zoho Creator and so far i do like it but im shocked there seems to be no easy way to add a search function and/or navigation to there forms as this readily available in every platform i have used in the past. Anyway i have a form which i have

• How to setup DKIM / SPF in Zoho Mail

  Hello there! I'm having a hard time understanding how to setup the TXT records for SPF and DKIM with Zoho Mail. I'm following the instructions here: https://www.zoho.com/campaigns/help/setup-spf-dkim.html Specifically, when it comes to the value for the

• Mass update cant trigger a workflow?

  Hello there, Is this a normal Creator behaviour? In a report, if I manually edit each data row, it will pass those changes to all other reports. However, if I perform a Mass Update on a few data rows at once, the new data is not pushed to other reports.

• Exciting Updates to the Kiosk Studio Feature in Zoho CRM!

  Hello Everyone, We are here again with a series of new enhancements to Kiosk Studio, designed to elevate your experience and bring even greater efficiency to your business processes. These updates build upon our ongoing commitment to making Kiosk a powerful

• search and Smart Bar both missing in Mail

  One of the users on my account does not have the search bar at the top right or the Smart Bar at the bottom left of the desktop Mail app. Any ideas how to get those back?

• "Wrong password or login" Problem to configure Zoho on MAIL App on my Macbook

  Hi, I'm having problems to configure my e-mail on my MAIL App(Macbook pro). My e-mail is hari@trespontoum.net Actually was working perfectly, and still working on my Iphone. My MAIL App prompt me that my login or password is wrong. I tried to change 3

• Remote Control Functionality During Screen Sharing in Zoho Cliq

  Hello Zoho Cliq Team, We would like to request the addition of remote control functionality during screen sharing sessions in Zoho Cliq. Currently, while screen sharing in Cliq is very useful, it lacks the ability for another participant to take control

• Looking for best practices to import data from SAP Business One (on-prem) into Zoho Analytics via Zoho DataPrep / Databridge — daily automated schedule

  Hi all, I’m using SAP Business One on-prem (SQL Server / or HANA — depending on DB backend) as our ERP. I want to build a pipeline that, every morning at 9:00 AM IST: pulls transactional data (invoices, customers, products, stock, etc.) from SAP B1, loads

• Let us add Lookup fields in the Blueprint Transitions

  We are unable to add Lookup Fields in the blueprint transitions in Zoho Desk, we wanted to make it a requirement for our workflow but since it's not available in the transition we cannot. The lookup field exists in the Layout: But it cannot be added/selected

• Zoho Projects API Scope for Issue Attachments

  I try to download issue attachments via the API, unfortunately I always get the following error code when trying to download the file from the supplied URL: {"ERROR_MESSAGE":"INVALID_OAUTHSCOPE","ERROR_CODE":401} indicating an auth scope error. I've tried

• How to fetch custom fields for time entries in Zoho Project API v3

  In the previous Zoho Projects REST API, we were able to retrieve custom field details for time entries, including picklist options, using the endpoint: GET /restapi/portal/[PORTAL_ID]/timesheetcustomfields In the new Zoho Projects API v3, we tried using

• Zoho Survey Enhancements

  We love Survey. We use it a ton. It needs some enhancements. Maybe some of these are already on the roadmap? API - this is crucial. We have some complex surveys that take place and need to update records, trigger other functions/automations, etc. I would

• Images Don't Display on Blog

  Hi, I've just posted a new blog entry, but regardless of format (png or jpeg) Images that display in Preview mode do not display on any browser in the published post.  I've not done anything different with this post than others regarding images, please advice. Thanks! Edit:  I've discovered that moving the image files from a my sub directory folder "Pics for Blog" to the top level of the "Files" folder on my site allows the images to display live.  This, even though my other blog posts are correctly

• Creating multiple CRM leads from a Zoho Forms subform

  Hi all, We have a heavily used intake form that is used for new leads as a part of our intake. There is a subform that allows the lead to add additional team members, their titles and other basic info. That form submission creates a new Lead and the subform

• Checkbox Field Mapping Zoho Forms to Zoho Sign

  I have an application that will be filled out via Forms that I am mapping into a PDF Filler on Zoho Sign. I need to have a series of checkboxes mapped to the corresponding fields in Sign and I only see single checkboxes available via the mapping, though

• MCP > Creator connection failing with Claude

  I'm trying to get claude to access any of my Zoho Creator apps and it keeps failing. I have enabled all tools for creator and ensured in claude settings that everything is authorised. Here is what claude says : Unfortunately, the error messages I'm receiving

• Books P&L by Customer

  Lately, we have found that the Customer field filter for the Profit & Loss report in Zoho Books is no longer available. We have several projects with the same customer and look at the P&Ls by project AND by Customer (overall). Can you please add back in this field selection alongside the Project field to the P&L report filter? Thanks! -Gina

• Next Page