Blocked Email
We are a Zoho One subscriber and use Yahoo as our MX provider.
A few times each year, for the past four years, CRM blocks one or more of my Zoho One users from receiving internal email from CRM. This includes "@mentions" in all modules, and emails from ' notifications@zohocrm.com'.
When I talk to Zoho Support, the first reaction is "we don't see a block." When I insist, they dig further and find the block. Correctly, they require an email request to unblock from superadmin and the affected user.
It is almost certainly the case that my users are not proactively unsubscribing from internal zoho notification emails...they rely on those notifications to do their work.
Is there anything I can do within Zoho to ameliorate this problem? Can I have "notification" email come from our fully authenticated domain?
Here's what's probably happening...
Yahoo Mail has notoriously aggressive spam filters, and automated CRM notifications are a common trigger, even when properly authenticated (which yours are).
Why Yahoo Auto-Flags CRM Emails:
Bulk sending patterns - Even though it's one email, it comes from a bulk sending infrastructure (notifications.zohocrm.com)
"Re:" subject line - Yahoo may see this as suspicious since it's an automated "Re:" without a clear conversation thread
High HTML complexity - CRM notifications often have heavy HTML/CSS (I see this email was 80KB - quite large)
Generic "from" address - not********@zohocrm.com looks impersonal
Automation headers - The email literally says xcrm-src: Automation in the headers
What You Can Do:
Immediate fixes:
Use a custom domain for sending - Instead of notifications.zohocrm.com, send from @yourdomain.com with a friendlier "from" name
Simplify email content - That 80KB email is huge. Strip down unnecessary formatting
Improve subject lines - Avoid "Re:" in automated emails. Use clear, direct subjects like "Action Required: Sign Deal Documents"
Long-term solutions:
4. Separate internal/external sending - Use different email configurations for employee notifications vs customer emails
5. Whitelist request - Have employees add your CRM notification address to their contacts/safe senders
6. Reduce email volume - Consolidate notifications into digests where possible
In Zoho CRM:
Check Settings → Email → Delivery Settings
Consider using a dedicated sending domain with better reputation
Review your email templates to reduce size/complexity
Even with perfect authentication, Yahoo's filters are algorithmic and can be overly aggressive with automated business emails.
Access your files securely from anywhere
Zoho FSM Video Tutorials
Centralize Knowledge. Transform Learning.
All-in-one knowledge management and training platform for your employees and customers.
New to Zoho Recruit?
Zoho Developer Community
New to Zoho LandingPage?
Zoho LandingPage Resources
New to Zoho Survey?
New to Zoho CRM Plus?
Deliver unforgettable customer experiences
New to Zoho CRM Plus?
Deliver unforgettable customer experiences
New to Zoho Marketing Plus?
Everything you need to run your marketing
New to Zoho Marketing Plus?
Everything you need to run your marketing
New to Bigin?
Topic Participants
Ken Florian
Ishwarya SG
Sticky Posts
Introducing Incentives for Zoho CRM: Build, automate, and track sales commissions
Dear Customers, We are here with an amazing news! We built a direct solution to help manage your commission provisioning activity in your business. From creating commission plans to issuing payouts, this application leverages your sales reps’ performanceEnhancement in Zoho CRM: Introducing New Return Types for String Fields Based on Character Length
Dear Customers, We hope you’re well! In Zoho CRM, formula field with string return type is used in various scenarios where text is involved like concatenating customers’ first and last names, trimming characters from texts, performing find and replaceTransform your line of items into line items: ICR can now record your table values as subform values
Enhancement in Zoho CRM Dear Customers, We hope you're well! Zia Vision’s ICR capability can now recognize, extract, and store tabulated values in your subforms. An ideal example is a university application form. It has printed fields and handwrittenApprove records efficiently: Useful enhancements to My Jobs module and Approval process in Zoho CRM
Dear Customers, As you might know, approval process is a process automation tool that allows you to automate approvals in your organization and My Jobs is where you approve requests from a single point of view. Here's how you'd go about it: You’d addEnhancement announcement: Mitigate mailbox clutter using the new field: "Sync emails from"
Dear Customers, We hope you're well! We are here with a minor enhancement in email integration in Zoho CRM. Emails have become the primary mode of communication these days. Because of which mailboxes are getting overly cluttered day after day. To help
New to Zoho TeamInbox?
Zoho TeamInbox Resources
Zoho CRM Plus Resources
Zoho Books Resources
Zoho Billing Resources
Zoho Projects Resources
Zoho Sprints Resources
Qntrl Resources
Zoho Creator Resources
Zoho CRM Resources
Design. Discuss. Deliver.
Zoho Show Resources
Get Started. Write Away!
Writer is a powerful online word processor, designed for collaborative work.
Zoho CRM コンテンツ
-
オンラインヘルプ
-
Webセミナー
-
機能活用動画
-
よくある質問
-
Ebook
-
-
Zoho Campaigns
- Zoho サービスのWebセミナー
その他のサービス コンテンツ
Nederlandse Hulpbronnen
ご検討中の方
Recent Topics
How do I add 2 agents under the same email?
I have 2 agents who use the same email address. I added one, but when adding the second agent, it says that the email is already registered. How do I configure this properly?Zoho Desk API modifiedTimeRange returns HTTP 500 around 2026-03-08T02:00:00.000Z
Hello Zoho Support Team, We are experiencing a reproducible HTTP 500 Internal Server Error when querying the Zoho Desk API search endpoint with a specific modifiedTimeRange boundary. ### API Endpoint GET /api/v1/tickets/search ### Reproduction Steps &Updating an Invoice Line Item's Discount Account via API Call / Deluge Custom Function
I need help updating an invoice line item's discount account via API. Below is a screenshot of the line item field I am referring to. Now the field to the left of the highlighted field (discount account) is the sales income account. I am able to modifyCollaborate Visually with Whiteboard in Zoho Projects
Whiteboard in Zoho Projects allows you to collaborate visually by creating diagrams, annotating designs, and sketching project workflows using shapes, text, and images within project modules. Team members can work simultaneously, improving productivityAssociate project with timer on iPhone
When I start the timer without first associating a project (on my iPhone), its starts fine but now when I need to associate a project, and click on the link, I get a list of EVERY project I've ever put into Zoho Books. It used to just show active projects.Sales Tax Refund on Commerce Order
I've looked high and low. Relatively new to ZOHO but not to systems in general. How do we produce a refund for sales tax charged and paid for by a customer in error? This does not impact inventory stock. Simply for accounting and getting the $ back toImporting Chart of Accounts from Quickbooks -- "Debit or Credit"?
I'm trying to switch from QB to Zoho Books. I've prepped my chart of accounts and put it into the format following the structure of the sample CSV file. But one thing that does not exist at all on the Quickbooks side is the Zoho column for "Debit or Credit".Long term pricing for customers managing multiple organizations
I've been using Zoho extensively for quite some time and genuinely think it's one of the most powerful and customizable business platforms available. Between Zoho Books and Zoho Analytics, I've invested a significant amount of time building automations,Default Status for Appointments to Completed
We use Zoho Bookings integrated with Zoho Desk to book time for tech support sessions, we've configured it to only allow for a contact to book a single session to avoid customers overbooking time that may not be needed. The trouble is, once a sessionCustomer User Fields for use in Rules
Hi, I would like to be able to add custom fields to the users, such as Department or Role, which can then be used in Rules, Reports, etc. as a condition. A use case is limiting Global lists or Choices based on the users Custom Field, so one form can beAdd ZeptoMail to Zoho One
Hi Zoho Team, I would like to request that ZeptoMail be added as a fully included application within Zoho One. Why this is important Zoho One is positioned as a unified business operating system that brings the applications an organization needs underItem image on document
I know what I am asking may not be possible, but I will ask anyway, maybe I will get lucky, and someone else is doing it. My business is based on special orders only from various online stores. When I send a quote to a client, I generate a separate quoteDashboard Metric Drill-Down Shows Stale Data
Summary: When clicking between different metric components on a custom dashboard, the drill-down list shows data from the previously opened metric instead of the one just clicked. Steps to Reproduce: Create a custom dashboard with multiple pre-defined/templatizedAllow Reauthorizing CRM Connections Without Revoking First
Currently, when a Zoho CRM connection needs to be reauthorized or authorized with another account, we first have to revoke the existing authorization and then authorize it again. This creates a gap where the connection is unavailable, and any functions,Programmatic Itemized Expenses?
It does not appear that it is possible to create itemized expenses programmatically (via the API)? Is this correct, or am I misunderstanding the situation?Prefix & Suffix on Single Line, Number, etc.
Hi, I would like to have the same Prefix and Suffix that was added to the Unique ID on Text and Number Fields. Use case could be as basic as temperature, as per another Idea I have to use Single Line (Text) for a number that might have leading zeros today,Handle Leading Zeros in a Number Field
Hi, If I use a Number Field, set with Min 7 Digits and Max 7 Digits, and enter 0000001, it will result in 1 and an error as it removes the leading zeros, the same with entering 0012340 will result in 12340 and error. So I have to use a Text Field andVirtual Option for Fields
Hi, I would like to be able to choose another option other than Read-Only or Disabled, such as Virtual. And with Virtual, the field is shown on the form and avilable in rules, but NOT saved to the Database. A use case is having multiple Large Lists ofZoho Marketing Automation Cannot Sync Lookiup Fields
Hello all, It seems that Zoho MA cannot sync Lookup fields from the CRM. Can you confirm if this is the case? Is there a workaround? Do you know if Campaigns can sync with custom modules and also with Lookup field in the CRM? Thank you!Specific ListView Canvas on Canvas Home Page Always Loads Most Recent ListView, Not the One Specified
I had mentioned this to ZOHO, but I mainly wanted to see if others in the Community are also facing this problem. I created a Canvas ListView for a Custom Module, and then created a Canvas Home page (technically on a tab item, but I'm not sure if thatAnnouncing the new SKILL.md for Zoho CRM and the updated OAS repository!
We are introducing a new zoho-crm skill to make working with Zoho CRM Developer tools (like APIs, functions, widgets, client scripts, queries etc) easier and faster, with the help of AI in your preferred AI harness like Claude Code, Codex, Cursor, VSCodeZoho Campaigns EU Topics API returns HTTP 200 with empty topicDetails
Hello, Our Zoho Campaigns EU organisation has two custom topics visible in the Campaigns UI, and contacts are subscribed to them. However, an OAuth request with ZohoCampaigns.contact.READ to https://campaigns.zoho.eu/api/v1.1/topics returns HTTP 200 withCaso de Éxito: Cómo Toyota Financial Services unificó la atención al cliente con Zoho
"Después de seis meses con el CRM en producción estamos encantados." Miriam Cárdenas, Responsable Departamento ATC Toyota Financial Services es la división financiera de Toyota encargada de gestionar la financiación de vehículos y, junto con KINTO España,Zoho Books - France
L’équipe de Zoho France reçoit régulièrement des questions sur la conformité de ses applications de finances (Zoho Books/ Zoho Invoice) pour le marché français. Voici quelques points pour clarifier la question : Zoho Books est un logiciel de comptabilitéAutomatically remove commas
Team, Please be consistent in Zoho Books. In Payments, you have commas here: But when we copy and paste the amount in the Payments Made field, it does not accept it because the default setting is no commas. Please have Zoho Books remove commas automZoho ERP | Product updates | July 2026
Hello users, We're back with another round of updates to help you streamline your operations. This month's release brings new features and enhancements designed to help you work more efficiently. Read on to discover everything that's new in Zoho ERP thisZoho CRM
Cuándo voy a adjuntar un archivo .pdf en un registro en el campo Archivo obtengo el siguiente error:Can I hide some products from a particular customer
HI I want ot give a customer access to the portal but I need to hide some products from them that are not available for them to buy- is this possible ?Dashboard/Component filter by probability
Hi all Can I request the ability to add a Component or Dashboard filter for Deal Probability? Would be useful to be able to see data of deals more than 60% probable. OllyAdmin Logging in as another User
How can a Super Admin login as another user. For example, I have a sales rep that is having issues with their Accounts and I want to view their Zoho Account with out having to do a GTM and sharing screens. Latest Update (27th April 2026): With the earlyOpenAI Is Moving to the Responses API: Here's What It Means for SalesIQ
OpenAI has deprecated its Assistants API and is moving to the Responses API. If you're using OpenAI Assistants with SalesIQ, you may be wondering if you need to make any changes to your existing setup. You don't. SalesIQ has already taken care of theFree webinar: Zoho Sign for Microsoft apps
Hello, Did you know Zoho Sign works right inside the Microsoft apps you already use? A signature request shouldn't mean leaving Teams for another tab, or downloading an Outlook attachment just to sign it. Zoho Sign integrates with Microsoft 365, Teams,Billing Status and WO Status Field Colors -
Hello Team, I noticed that the colors of the Billing Status and WO Status fields in the WO module have been changed. (Org ID:170000078905) This is not urgent to correct, but I wanted to bring it to your attention so you can check whether this is a systemIntroducing throw statements in Deluge
Hello everyone, We're introducing a powerful addition to Deluge that gives you more precise control over error handling in your scripts. Whether you're calling an external API, validating user input, or enforcing a business rule, there are moments whenZoho Notebook、実はこんなところから使えます
ユーザーの皆様、こんにちは。ゾーホージャパンの田村です。 前回に続き、今回もZoho Notebookをご紹介します。 関連情報 メモの保存場所、見直しませんか？― Zoho Notebookで始める情報管理 仕事中、「この内容、メモに残してあとで見返したいな」と思う瞬間はありませんか？ 会議中の一言、お客様とのやり取り、CRMで見つけた気づき、 ほんの数秒で終わる内容だからこそ、「あとで書こう」と思って、そのまま忘れてしまうこともあります。 そこで今回は、PCやスマートフォンはもちろん、普段お使いのZoho製品からもすぐにアクセスできるノートアプリ「ZohoI have been looking for CVID to get segmate list where & how can fnd it?
I am trying to get segment details from the Zoho API. The API documentation says that the CVID is a mandatory parameter, but I cannot find the CVID in the "getmailinglists" API. Can you tell me where to find the CVID?How do I increase the email attachment size in Zoho CRM ?
It looks like I'm limited to 10MB when sending an attachment using the email widget on a record in Zoho CRM. Is there a way to increase the size? Or can I use some other tool? From what I'm reading online, I'm maxed out at 10MB. Any insight would be greatlyIntroducing Incentives for Zoho CRM: Build, automate, and track sales commissions
Dear Customers, We are here with an amazing news! We built a direct solution to help manage your commission provisioning activity in your business. From creating commission plans to issuing payouts, this application leverages your sales reps’ performanceSubforms and automation
If a user updates a field how do we create an automation etc. We have a field for returned parts and i want to get an email when that field is ticked. How please as Zoho tells me no automation on subforms. The Reason- Why having waited for ever for FSMCannot format "start date" field in Zoho Flow
I am trying to recreate a flow that connects Inventory package creation to Zoho projects (where a task is created in a defined project). I've been able to troubleshoot everything EXCEPT the date fields; specifically the "start date" - which is quite importantNext Page