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Updated July 2026 · real, multi-region App Store reviews
Head-to-head

Zoho Mail vs Microsoft Outlook

Zoho Mail 4.6★ · Free + IAP 55
Winner Microsoft Outlook
Microsoft Outlook 4.8★ · Free to download 70

Microsoft Outlook generally offers a more reliable and feature-rich experience, especially for those integrated into the Microsoft ecosystem, despite its own share of bugs and login issues, while Zoho Mail struggles with core functionality and customer support.

Full reviews: Zoho Mail · Microsoft Outlook

Microsoft Outlook, with a significantly higher rating and user base, is praised for its comprehensive features and integration, though it faces criticism for bugs and authentication problems. Zoho Mail, while offering a suite of business tools, is plagued by issues like spam, app crashes, and poor customer service, making it a less reliable choice.

Head to head

Features edge: Microsoft OutlookR14R15R17R41
Zoho Mail Zoho Mail offers a robust set of features for business, including a calendar, contacts, and notes all in one place, and is appreciated for its organization and integration with other Zoho services R14R41. However, users report missing fundamental features like the ability to block emails or create white/black lists directly in the app R15R17.
Microsoft Outlook Microsoft Outlook is lauded for its comprehensive functionality, including calendar, mail sorting, and integration with other O365 applications . Users appreciate its ability to handle large attached files and its overall organization . However, some users find the calendar cumbersome and the search feature to be poor .
Ease of Use edge: Microsoft OutlookR11R13R18R33
Zoho Mail Zoho Mail is described as having an easy setup R11 and being simple to use R59. However, many users find the app's user interface (UI) to be horrible and not user-friendly, with issues like confusing navigation and lack of basic functionality R13R18. Recent updates have made it more difficult to navigate and removed features like pinch-to-zoom R33.
Microsoft Outlook Microsoft Outlook is generally considered easy to use and understand . Users find the app cleaner and simpler than the desktop version and appreciate its fluid operation . However, some users find the calendar confusing , and recent updates have made the calendar difficult to read .
Reliability tieR1R4R10R12
Zoho Mail Zoho Mail users report significant reliability issues, including emails not being received R4, the app crashing frequently R12, and emails failing to load . There are also complaints about spam filters not working R1R30R40 and accounts becoming inactive R10.
Microsoft Outlook Microsoft Outlook also faces reliability challenges, with users reporting app crashes , issues with emails not arriving on time , and the calendar not refreshing . A recurring and significant problem is the login and authentication process, which often gets stuck in loops or fails R109R115R118.
Price/Value tieR10R32R41R59
Zoho Mail Zoho Mail is available with a free tier and in-app purchases. Users testing the free version have experienced significant issues, leading to a nightmare experience R10. Some users appreciate its affordability and power R59 and the absence of ads R32R41.
Microsoft Outlook Microsoft Outlook is free to download, but one user reported being charged $6 to download it . It is widely used for school and work, indicating good value in those contexts .
Support edge: Zoho MailR6R20R22R23
Zoho Mail Zoho Mail's customer service receives overwhelmingly negative feedback, described as atrocious, unhelpful, and difficult to reach R6R22R31R55. Users struggle to resolve issues, often being asked for screen recordings instead of direct email solutions R6. Some positive experiences with support are noted, such as a quick resolution to a sign-in loop after reinstalling R20 and support asking to reset the app which fixed performance issues R23.
Microsoft Outlook Microsoft Outlook users report difficulty getting help, with no number to call for real person support R118. Issues like account recovery are not handled well .
Pick Zoho Mail if

you are deeply integrated into the Zoho ecosystem and are willing to tolerate potential bugs and customer service challenges for its business features R14R41.

Pick Microsoft Outlook if

you need a powerful, organized email client that integrates well with other Microsoft services and can handle large attachments, despite occasional login and calendar glitches .

Evidence note: Zoho Mail has significantly fewer reviews than Microsoft Outlook, leading to less comprehensive evidence for some dimensions. The free-vs-paid asymmetry is present, with Zoho Mail's free tier users reporting more friction, while Outlook's issues are reported by its vast user base, many of whom likely use it for work or school.

Frequently asked

Does Zoho Mail have good spam filtering?
No, Zoho Mail users frequently report that its spam filters do not work effectively, with many experiencing an increase in spam even in paid accounts R1R30R40.
Is Microsoft Outlook reliable for time-sensitive emails like 2FA codes?
Microsoft Outlook can be unreliable for time-sensitive emails like 2FA codes, as users report that the refresh action sometimes fails to fetch new emails promptly, and the junk mail filter can be too aggressive R87.
Are there common issues with logging into Microsoft Outlook?
Yes, many Microsoft Outlook users report significant and frustrating issues with logging in and authentication, often getting stuck in endless loops with the Authenticator app R109R115R118.
How is Zoho Mail's customer support?
Zoho Mail's customer support is widely criticized as atrocious, unhelpful, and difficult to contact, with users often unable to resolve issues through email R6R22R31R55.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R14] Zoho Mail 5/5 · US Amazing features in the app: Zoho mail is an amazing app, help me with my business a lot. I really recommend it for everyone. Has a calendar and a lot of other features that help your business
  2. [R15] Zoho Mail 3/5 · US App is ok, but missing fundamental features.: The app has done its job, but it’s missing key features. The biggest issue is that there isn’t a way to block emails or create a white/black list directly in the app.
  3. [R17] Zoho Mail 4/5 · US Great: I love this app. This is hooked to my Shopify account and having both apps on my phone make my life incredibly easier. The only thing missing is the ability to block email addresses the way I can on my laptop app.
  4. [R41] Zoho Mail 5/5 · US Professional Email and Beyond: The Zoho Mail app is a perfect tool for managing both personal and business emails. I love that it includes a calendar, contacts, and notes all in one place which helps me stay productive on the go. The interface is very clean and the swipe actions make it easy to organize my inbox quickly. It is a reliable and secure app that works smoothly across all my devices wit
  5. [R11] Zoho Mail 5/5 · US Easy set up: Efficient and easy setup
  6. [R13] Zoho Mail 1/5 · US Great service with Horrible UX: Zoho is a good mail service, but the app UX is just horrible, like a software engineer also designed the app. You have to press back to see the Dashboard Menu! Then Inbox isn’t your Inbox! It’s View -> Undread
  7. [R18] Zoho Mail 3/5 · US App is very basic: App is very basic and could use some UI enhancements. Email lists need more white space. Room to breathe and easier on the eyes. I know that mobile apps cannot have the same functionality as desktops, however, there is some basic functionality that is missing in the mobile app. It needs a little bit more polish.
  8. [R33] Zoho Mail 3/5 · US New Theme is Flawed: I have been using Zoho for years and have been quite happy with it. That is until the recent update that applied a redesigned theme to the app. I feel like the saying “don’t fix what ain’t broke” applies here. I find it more difficult to navigate and a lot of features were dropped with this update, including the ability to zoom in on emails. That alone is almost a dealbreaker
  9. [R1] Zoho Mail 1/5 · US To much spam.: Entirely too much spam. They sell your info and your paid mail account is covered in spam. To boot there spam filters don’t work either.
  10. [R4] Zoho Mail 1/5 · US Stopped: I’ve stopped getting my emails after running my entire business, and personal emails through this site!!!! I’ve missed incredibly important information costing me thousands of dollars!!!
  11. [R10] Zoho Mail 1/5 · US Account not accessible…inactive after just 10 days: They my account inactive after I recently opened it. No support. No acknowledgment. No ticket for support. I keep contacting them. They detached my cell number from the account too. I’m testing out the free Zoho email before purchasing an upgrade but this is a nightmare. They need to acknowledge me and fix things fast. I need to trust them.
  12. [R12] Zoho Mail 3/5 · US App crashes 4/4: I love using Zoho for my small business but app started crashing won’t open on 4/4 and still having the same issue. I think it has something to do with new update.
  13. [R32] Zoho Mail 5/5 · US Zohomail: Run real smooth without Ad
  14. [R59] Zoho Mail 5/5 · US Just what I needed.: Simple. Affordable. Powerful.
  15. [R6] Zoho Mail 3/5 · US Its pretty good: It functions pretty well but has some issues that are hard to resolve due to the company being in India. The only contact to resolve issues is email and that makes it very difficult to explain things. They ask for a "screen recording" of the issue that should have been easy to resolve via email.
  16. [R20] Zoho Mail 5/5 · US Loops during sign in: Great app for the past 6+ years. Latest update broke the sign in for me. Can’t get into mail and sign in constantly loops back to sign in and then verification to sign in. Update 4/27/26: deleted the app and then reinstalled. Signed in with no problem. Zoho tech support contacted me regarding the issue which I appreciated! Thank you.
  17. [R22] Zoho Mail 1/5 · US Worst customer service: Their customer service is atrocious. They are extremely unhelpful. I eventually gave up and used a different service.
  18. [R23] Zoho Mail 5/5 · US Zoho, back to fast, was slow. was fast (iPhone): Update 4/2026. Can you believe it, support asked me to reset the app while sending more data Fortunately, the reset did the trick, blazing fast again. Not a big fan of the ii, and secret finger techniques: finger select and hold to bring up select all. But that’s personal choice. Back to 5 stars for support responsiveness and performing as intende
  19. [R30] Zoho Mail 3/5 · US Spam increase: There has been an increase in spam getting through. I am marking as spam to help. Not sure what’s happened to change
  20. [R40] Zoho Mail 1/5 · US Garbage: Used to have excellent spam filtering. Now it doesn't filter anything. Totally overrun with spam, 100s per day, and all the spam features have been defeated by "someone". False advertising to claim it filters spam.
  21. [R87] Microsoft Outlook 3/5 · US Unreliable for 2FA use: Most of the time, the refresh action will get new emails sent 5 minutes ago, but sometimes not which is not good for time-sensitive 2FA actions. When it does not work as it is supposed to, it is usually on hotspot, but somehow decides not to check in with the server even though I have requested a refresh. Settings are not the problem. And then 2FA code emails don’t come th
  22. [R109] Microsoft Outlook 1/5 · US Authentication is atrocious: If you use this on mobile they make it impossible to authenticate on a single device, the app tries to authenticate on the authentication app via the authentication app. If you have a meeting to get to on mobile and you get signed out good luck. Also the outlook sign in solution also failed. This process all around is a failure.
  23. [R115] Microsoft Outlook 2/5 · US Richest poor software in the world: The application functions just like any other email application with the added side effect that you will randomly not be able to sign in due to their Authenticator app being complete and total garbage. It will trap you in an endless loop of needing to use the Authenticator app to authenticate that you’re using the Authenticator app so you can authenticate outloo
  24. [R118] Microsoft Outlook 1/5 · US Authenticator App wants to Authenticate Authenticator App through Authenticator App.: I can’t log into the Outlook app on my phone without it going through the Authenticator app. Authenticator app wants me to authenticate the Authenticator app login through my Authenticator app. I can’t use the same app to authenticate my ability to use the same app. Furthermore, there is no number I can call to
  25. [R31] Zoho Mail 1/5 · US Awful: App is worse with every update. These dimwits can’t even successfully copy someone else’s setup. Exceedingly useless customer service. Thank hades I never have to use this moronic company again.
  26. [R55] Zoho Mail 1/5 · US Garbage: You can’t get anyone to fix anything. Any issues have to be resolved through email, only to get no solution

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store