Best tool for migrating Outlook mailboxes, OneDrive, and SharePoint to Microsoft 365 (cost-effective)?
Posted by RefrigeratorLanky642@reddit | sysadmin | View on Reddit | 28 comments
Hey sysadmins,
We’re planning a migration to Microsoft 365 and need advice on the best tool or service for moving Outlook mailboxes, OneDrive data, and SharePoint sites with the best cost-benefit ratio.
Scenario:
- Migrating existing email accounts (Exchange or other platforms) to Microsoft 365 Outlook
- Moving user files from local storage or other cloud services to OneDrive
- Migrating team sites and document libraries to SharePoint Online
- Goal: minimize downtime, keep costs reasonable, and ensure security
Options I’ve seen:
- Microsoft native tools:
- Exchange Online migration (cutover, staged, or hybrid)
- SharePoint Migration Tool (SPMT) for SharePoint/OneDrive
- Mover.io for cloud-to-cloud migrations
- Third-party tools:
- ShareGate, AvePoint, Quest Migration Manager (advanced features, but cost?)
- Manual methods (PST export/import, etc.) — not ideal for large environments
Important criteria:
- Cost-effectiveness
- Ease of use (automation preferred)
- Security and compliance
- Reliability and speed
What tools have you used for this type of migration? Any tips or pitfalls to avoid?
Thanks!
Similar_Election_949@reddit
In my opinion, SysTools Office 365 Migration Tool clearly captures what you need. Its budget-friendly price and enterprise-level performance are best suited for migrating Outlook mailboxes, OneDrive, and SharePoint to Microsoft 365. Do try it out.
MikeAtQuest@reddit
Soft plug, we built Quest On Demand to preserve Outlook profiles so that users don't need to change their settings after the move.
petergroft@reddit
For a cost-effective move, you can combine Microsoft's native tools—using the Exchange Migration Wizard for mail and the SharePoint Migration Tool (SPMT) for OneDrive and SharePoint—as they are free and handle most standard data transfers reliably. However, to truly minimize downtime and technical overhead without paying for expensive third-party licenses, you can use Apps4Rent, as they provide a fully managed Microsoft 365 migration for free when you purchase your Microsoft 365 seats through them.
WorkFlow-101@reddit
I used EdbMails Office 365 Migration Tool for migrating mailboxes, OneDrive, and SharePoint. It preserved permissions, maintained folder structures, making the entire process much simpler and more reliable compared to juggling multiple native tools or expensive third-party solutions.
AdrianWilliams27@reddit
+1 for EdbMails
BadAsianDriver@reddit
Is this AI marketing slop ?
ADynes@reddit
Really seems like it. Like isn't OneDrive already migrated?
acehotdog@reddit
No. We are real and have developed this plugin.
theone_1991@reddit
We did a big migration last year - around 2000 mailboxes plus SharePoint. Microsoft's native tools are free but super manual. SPMT works fine for smaller SharePoint sites but choked on our larger document libraries (anything over 100GB got really slow). For Exchange we used the hybrid approach which took forever to set up but gave us more control over the cutover timing. If you've got budget, BitTitan MigrationWiz saved us tons of time - not the cheapest but it handled everything including permissions and it just... worked. One thing nobody mentioned yet - check your source data first. We had corrupted PST files and SharePoint lists with illegal characters that broke every migration tool we tried until we cleaned them up.
temetnoscere@reddit
I'll second MigrationWiz
theone_1991@reddit
We've used MigrationWiz heavily in a couple of larger Microsoft 365 moves at Cloudastra Technologies, around the same scale as what I mentioned earlier (mailboxes + OneDrive + SharePoint). In those projects, the biggest differentiator wasn’t the tool itself but how clean the source data was and how the endpoints were configured.
MigrationWiz worked best when:
SharePoint lists had no illegal characters
OneDrive permissions were normalized ahead of time
OAuth endpoints were set up with correct scopes for both SharePoint and Graph
Mail data under 100–120GB per mailbox stayed within normal throughput
Any environment that didn’t meet those conditions slowed down or threw cryptic errors, no matter which vendor we used.
If you end up going with MigrationWiz, doing a quick audit of PST integrity + SharePoint path lengths + user UPN consistency saves a ton of headaches later. Happy to share a quick preflight checklist if you want, it’s just stuff we learned the hard way during those bigger migrations.
ultramagnes23@reddit
Check the OneDrive permissions for sure. We recently had an acquisition where the entirety of company share data was on the CEO's OneDrive then shared out to each department. Obviously that broke after the migration and he had far surpassed the file limit to re-share or change permissions on any of the directories afterwords. I spent that weekend manually moving his OneDrive to different SharePoint sites for each department. ...like it should'a been in the first place.
theone_1991@reddit
Absolutely, OneDrive permissions are always the sleeper issue. We've had a few cases where department heads or execs had their personal OneDrive mixed with shared departmental data and everything looked fine until the migration ran and suddenly half the org lost access because the inherited permissions came from the wrong root.
We started adding these checks after getting burned a couple of times:
Make sure no departmental data is sitting under someone's personal OneDrive
Normalize sharing links so you don’t carry over legacy “specific people” permissions that break on cutover
Verify path lengths, OneDrive loves to exceed the limit once it syncs locally
For acquisitions/mergers, check whether the old tenant used custom roles or odd inheritance patterns
Once those are cleaned up, MigrationWiz tends to behave consistently, but if the source environment is messy, every tool struggles the same way.
If OP wants, I can drop the quick OneDrive + SharePoint pre-migration checklist we ended up building - it’s basically the stuff we wish someone had told us before doing these larger M365 moves.
ultramagnes23@reddit
I manage M&A's at the company I'm with. I also am very familiar with MigrationWiz and have found it to be on the cheaper side, but more complicated setup when going from 365 tenant to 365 tenant. It's great for going from on-prem exchange to 365. For tenant to tenant I've switched to Quest On Demand which has a far simpler setup, but more costly. For smaller acquisitions, like <12 users, I just do it manually.
theone_1991@reddit
Yeah, 365-to-365 tenant migrations are definitely where MigrationWiz gets hairier. We've also seen Quest On Demand make that workflow smoother, especially for environments with lots of shared mailboxes or complex permission chains. The tradeoff is exactly what you said — setup is cleaner but the licensing stings a bit.
One thing we ran into at Cloudastra Technologies during an acquisition merge was that neither tool behaved well when the source tenant had legacy authentication policies still lingering in Conditional Access. The migration errors looked like tool failures, but it was actually token policies blocking background OAuth calls. Cleaning that up beforehand saved us a weekend of troubleshooting.
For smaller workloads (<10–15 users), manual can still be the most predictable path, at scale though, preflight checks matter way more than the tool you pick. If you want, I can share the pre-migration checklist we use now (learned the hard way after breaking a few OneDrive endpoints…).
RefrigeratorLanky642@reddit (OP)
Thanks! Have you ever had an issue where MigrationWiz fails to verify the OneDrive destination credentials even with an admin account and no MFA enabled? Wondering if it could be related to OAuth or endpoint configuration.
theone_1991@reddit
We’ve run into that a couple of times, usually it wasn’t MFA itself but how the endpoint was registered. MigrationWiz is extremely picky about the OAuth relationship between the source tenant, the destination tenant, and how the app registration was created.
A few things worth checking:
App Registration → API permissions Make sure both OneDrive and SharePoint delegated + application permissions were granted, and admin consent actually went through.
Token lifetime / stale tokens MigrationWiz caches tokens longer than people expect. Revoking them and re-authorizing often fixes “invalid destination” errors.
Scoping issue We once had the endpoint pointed at the wrong OneDrive root because it was resolving the user’s UPN differently.
Throttling masquerading as auth failure Microsoft sometimes throws generic “permission denied” errors when it’s actually a throttling or service-protection hit.
When we handled a 2k-mailbox + SharePoint migration at Cloudastra Technologies, we saw this exact pattern twice — both times it turned out to be permission scope mismatches between the registered Azure Enterprise App and the MigrationWiz project’s endpoint.
If you want to drop a screenshot of your current endpoint config (minus anything sensitive), I can probably point out where it’s failing. MigrationWiz error messages are notoriously vague.
evoxyler@reddit
You could also look into Skytek Solutions if you prefer having an MSP handle the migration end to end. They’re familiar with Microsoft 365 moves and can manage the email, OneDrive, and SharePoint parts for you. Just another alternative if you don’t want to run everything yourself.
Ataal77@reddit
I am heavily involved in M&A activity at my job. I've migrated probably 30+ companies to our 365 tenant over the last few years. Companies have ranged from 3 to 450 employees.
I use BitTitan MigrationWiz for email. Sharegate for Onedrive and Sharepoint.
BItTitan is pretty cheap. You can just buy licenses upfront for however you need. Even on the fly, pretty much.
Sharegate is not cheap and you may need some Powershell skills to handle large batches of Sharepoint sites because you do not want to run a bunch of migrations at the same time. Sharepoint will throttle you until you scream.
RefrigeratorLanky642@reddit (OP)
Thanks again! We decided to go ahead with MigrationWiz based on recommendations like yours. However, during testing we hit a problem verifying the destination endpoint. It fails with the message:
“Your migration failed while checking destination credentials.”
MFA is disabled on both source and destination admin accounts, so I suspect there might be something wrong with our OAuth/endpoint setup.
Have you ever encountered this specific verification issue before when setting up OneDrive/SharePoint migrations with MigrationWiz? Any hint on what I should double-check (permissions, OAuth app, endpoint config, etc.)?
Really appreciate any insight!
badteeth3000@reddit
If it made an enterprise app in your tenant it should show the fail reason in the sign in logs. It either needs more permissions granted (easy to check on the enterprise app) or the account used to run it may have conditional access blocks (which should show in the sign in logs). Anything beyond that for me would be a MigrationWiz question.
RefrigeratorLanky642@reddit (OP)
Thanks for all the feedback, really helpful so far.
We decided to try MigrationWiz based on some of the comments here. I’m testing the OneDrive migration now, but I’m running into an issue during the verification phase.
When I run a migration check, it fails with:
“Your migration failed while checking destination credentials.”
Some extra context: • MFA is disabled on both accounts used for the migration • Credentials work fine when logging into M365 directly • The migration account has admin permissions • My suspicion is that it might be related to OAuth / endpoint setup, as no modern authentication config was added in MigrationWiz
👉 Has anyone seen this credential validation failure before when using MigrationWiz for OneDrive or SharePoint? Anything specific I should look at regarding permissions or authentication on the destination tenant?
Appreciate any tips from those who’ve done this with MigrationWiz. Cheers!
Ataal77@reddit
Well, I use Sharegate for Onedrive/Sharepoint migrations. However, I assume some of the prerequisites are similar, if not the same. One gotcha with OneDrive is that if the user has not signed into their OneDrive yet, you'll need to administratively pre-provision those accounts.
See this: Pre-provision OneDrive for users in your organization - SharePoint in Microsoft 365 | Microsoft Learn
Also, you'll find out that even if the service account you're using is a global admin, that doesn't necessarily mean you are in "God mode." It's been a while since I set up that service account, but I think I had to give it the SharePoint admin role as well. Since, well, OneDrive IS Sharepoint.
Sharegate is a little easier to use in some scenarios. It will grant you permissions you need on the fly, so to speak.
If you're not already following BitTitan's documentation on this, here it is:
OneDrive to OneDrive for Business (with Versions and Metadata) migration guide – BitTitan Help Center
acehotdog@reddit
From your scenario, since you want to streamline Outlook mailbox migrations and also handle OneDrive and SharePoint content efficiently while maintaining compliance, I recommend looking into Konnect eMail's Outlook to SharePoint integration. It provides an easy-to-use Outlook Add-In that lets users save emails and attachments directly into SharePoint or OneDrive with proper metadata tagging, simplifying both migration and ongoing management. This can complement native migration tools by ensuring secure, compliant email archiving and better user adoption across Microsoft 365, all without breaking the bank.
jxd8388@reddit
If you’d rather have someone handle the whole migration instead of juggling multiple tools, Skytek Solutions is one of the MSPs I’ve seen that can manage these end to end without over complicating things. Sometimes outsourcing it ends up being more cost-effective depending on your team’s availability
VoltageOnTheLow@reddit
oh boy I can't wait for one of your alts to come in here and mention the wonder-product that will solve this problem
badteeth3000@reddit
The difference between tools that cost a license per user vs say Sharegate is there is a specific Microsoft license that’s used to migrate vs how Sharegate works where its using a file scratch space that has you download a mailbox and then recreate in the new tenant. Technically, learning how to do that would save a bunch of $ and cause less hassle. I had to migrate some public folders to a different tenant that doesn’t use public folders and it taught me a lot. That said, bittitan would have done that for me & would have saved me $ on time spent. Anyway, I work at a place that onboards new acquisitions quite often & we use sharegate (around 15k/3yr I believe) due to unlimited migrations and have some old cloudiway licenses for google migrations (sharegate now supports google migrations). I still think learning how to do it using Microsoft’s tools would serve anyone better if they have the time/patience.
danieIsreddit@reddit
My last employer had success with BitTitan. I'm not sure of the pricing because we used a third party contractor (Kyocera, yea the printer company) to do the email migrations for us. I've used ShareGate in the past as well. I think ShareGate cost three to five thousand dollars per year.