Gmail and Google Drive do not share a file size limit — they are two independent rule sets, and going over Gmail's limit hands your file to Drive rather than raising Gmail's ceiling. That one sentence explains most of the confusion people run into when they try to email a video.
The numbers involved are wildly different in scale, which makes the relationship between them look simpler than it is. Below, both sets of rules side by side, in Google's own words.
The two rule sets, side by side
| Gmail attachments | Google Drive | |
|---|---|---|
| Headline number | 25 MB for personal accounts (G1) | Up to 5 TB per file (D1, D3, D2) |
| What gets measured | "your total attachment size" in one message (G1) | each individual file |
| Where the file lives | inside the message | in your Drive, shared by link |
| Who decides if the recipient can open it | Gmail delivery | Drive sharing settings (G2) |
| Counts toward your Google storage | yes — "Attachments count toward your Google storage" (G1) | yes — storage is shared across Drive, Gmail and Photos (D7) |
The first row is the only one anybody quotes. The second row is the one that actually catches people out.
Gmail's 25 MB is a per-message total, not a per-file cap
Google's wording on the Gmail help page is specific: "For personal Gmail accounts, the limit is 25 MB." And crucially, the sentence describing what happens at that threshold says "If your total attachment size is greater than the limit, Gmail automatically removes the attachment and adds it as a Google Drive link in the email."
Total attachment size. Not per file. Three 10 MB clips in one message are over the limit even though no single file is close to it. This is the opposite of how most chat platforms work, so the instinct people carry over from elsewhere is wrong here.
Keep the qualifier attached too: that 25 MB is stated for personal Gmail accounts. Work and school accounts run on a different table, covered further down.
What "it becomes a Drive link" really means
This is the part that deserves more attention than it gets. Google frames Drive as the intended route for exactly this case: "Add attachments, like files or photos, to your emails. To send large files over the size limit, like videos, use Google Drive."
And the Drive-attachments page says the same thing from the other side: "When you send messages in Gmail, you can attach files from Google Drive, such as documents and photos. If the file exceeds the Gmail size limit, or if you want to collaborate on it with others, attach it from Drive."
So the file is not squeezed into the email. It is removed from the email and replaced with a link. Two consequences follow directly:
- Access is now a Drive question. Gmail "checks to see if your recipients have access to the file. If they don't, you'll be prompted to change the sharing settings of the file before you send your message." A delivered message no longer means a viewable file. There is a longer walk-through in why your recipient can't open a Drive attachment.
- The file occupies your storage. Google states plainly that "Attachments count toward your Google storage. Storage is shared across Drive, Photos, and Gmail. If you reach your storage limit, you can't send or receive attachments."
What does not happen: Google's official documentation doesn't state that Gmail compresses or re-encodes anything on the way out. Nothing in Gmail's help pages describes a transcoding step. If you want the file smaller, that is your job, not Gmail's. The mechanics of this handoff are covered in more depth in what happens when a large attachment becomes a Drive link.
Work and school accounts: a third set of numbers
If you are on Google Workspace, the administrator's tables apply instead, and sending and receiving are measured at different points.
For sending, Google's Workspace table lists 25 MB for Business and Education, and for Enterprise: "Up to 50 MB** for Enterprise Plus and 25 MB for Enterprise Standard." That footnote is load-bearing — it reads "**Available only on the web version of Gmail." The same table notes these are "the limits on the total size of the message content and attachments before encoding."
For receiving, the wording shifts: "You can receive emails of up to 50 MB (Enterprise Standard) or 70 MB (Enterprise Plus)*," where the asterisk says "*These values are the limit after encoding, which adds about a 37% increase." Those receiving numbers are attached to those two editions specifically, and Google adds that these limits "apply to all editions and can't be increased."
Note the mismatch in measurement points: sending is measured before encoding, receiving after. If that distinction matters to you, see sending vs receiving attachment limits. For personal accounts, Google's documentation doesn't state a receiving limit at all.
Getting under 25 MB instead of handing off
Sometimes a real attachment is simply better than a link — no sharing settings to configure, nothing counting against your storage long-term, nothing that breaks when the file moves. For a short clip, getting under 25 MB is usually a bitrate question rather than a quality sacrifice.
Try it right here
Runs in your browser. Your file is not uploaded anywhere.
This runs in your browser. The video is read from disk, re-encoded locally and handed back — it never goes to a server, so there is no upload step standing between you and the fix. If you want to set the knobs yourself instead of taking the preset, compress video exposes them, and the full set is at all Clapr tools.
Drive's numbers, and a documented unit discrepancy
Drive's side is where the scale changes completely. The Drive help page lists a maximum stored file size of "Up to 5 TB." The Workspace storage page repeats it: "You can upload and synchronize files up to 5 TB in size. Only the first file that breaks the limit completes uploading."
But the Drive API reference for files.create states the cap as "Maximum file size: 5,120 GB." Google's help centre and Google's developer documentation express the same ceiling in different units, and neither page supplies a conversion — so quote whichever matches the surface you are using rather than doing arithmetic across them.
Three qualifiers you should not drop:
- 5 TB is not what a free account can store. The video page says "You can store videos up to 5 TB if you have purchased at least that much storage. Otherwise you are limited to how much storage you have available." A free Google Account "comes with up to 15 GB of cloud storage at no charge," shared across Drive, Gmail and Photos.
- The 750 GB daily figure is a Workspace page number. "Each user can upload and copy 750 GB to Drive within 24 hours" appears in the Workspace admin documentation. Whether it applies to free personal accounts is not stated there.
- Uploading and playing back are separate. Drive's video page says "You can upload video of any resolution, but the minimum size for playback in Drive is 4 KB. The maximum playback resolution is 1920 x 1080." That is a statement about the player, not about your file — Google's documentation doesn't state that the stored original is altered.
FAQ
Is Gmail's 25 MB limit per file or per email? Per email. Google's wording is "your total attachment size," so several smaller files can collectively break the limit. The 25 MB figure is stated for personal Gmail accounts.
Does sending as a Drive link raise Gmail's limit? No. It moves the file out of Gmail's rules and into Drive's. The email carries a link, the file counts toward your Google storage, and whether the recipient can open it is decided by Drive's sharing settings.
Why does Google say 5 TB in one place and 5,120 GB in another?
The Drive help centre says "Up to 5 TB"; the Drive API reference for files.create says "Maximum file size: 5,120 GB." Both are official, stated in different units, with no conversion given on either page.
Can a free Google account store a 5 TB video? Not from the free tier alone. The 5 TB figure carries the qualifier "if you have purchased at least that much storage," and a free account comes with up to 15 GB shared across Drive, Gmail and Photos.
Does Drive compress my video to 1080p? Google states a maximum playback resolution of 1920 x 1080 — that describes the Drive player. Google's official documentation doesn't state that your uploaded file is changed.
My attachment failed and it was well under 25 MB. Why?
Storage is one candidate: Google says that if you reach your storage limit, "you can't send or receive attachments." File type is another — Gmail blocks certain extensions, including .img and .iso, and notes it "often updates the types of files not allowed."
More on platform limits and workarounds in the guides hub.
Limits quoted from Google's Gmail and Drive help centres and the Drive API reference, checked 16 September 2026. Google changes these pages without notice — verify against the official documentation before relying on a number.
