? Gmail附件發(fā)送失敗常見原因及解決方法：首先檢查文件大小是否超過25MB限制，若超限請壓縮文件或使用Google Drive插入鏈接；其次確認文件類型是否被Gmail屏蔽（如.exe、.bat等可執(zhí)行文件），建議改用.zip壓縮包或通過網(wǎng)盤分享；接著排查瀏覽器問題，嘗試更換瀏覽器、清除緩存或使用網(wǎng)頁版Gmail；最后可采用替代方案如分卷壓縮、轉(zhuǎn)換文件格式或使用第三方傳輸工具。

If you're having trouble attaching a file in Gmail, you're not alone. It's a common issue that can come from a few different sources—like file type, size limits, or browser issues. Let’s break down the usual suspects and how to fix them.

? File Size Is Too Big

Gmail has a limit on how big an attachment can be. If your file is over 25MB, it won’t let you attach it directly. This is one of the most frequent reasons attachments don't go through.

• Try compressing the file if possible
• Use Google Drive instead (more on that below)
• Ask the recipient if they’re okay with a smaller version

Also, keep in mind that even if you're sending multiple files, their total size shouldn’t exceed 25MB.

? Unsupported File Types

Gmail blocks certain file types for security reasons. If your file ends in .exe, .bat, .scr, or other executable formats, Gmail will stop you from sending it.

Here are some file types that are blocked by Gmail:

• .ade, .adp, .app, .asp, .bas, .bat
• .cdm, .chm, .cmd, .com, .cpl, .crt
• .dll, .exe, .fxp, .gadget, .hlp
• .hta, .inf, .ins, .isp, .jar, .jnlp
• .js, .jse, .ksh, .lib, .lnk, .mad
• .maf, .mag, .mam, .maq, .mar, .mas
• .mat, .mau, .mav, .maw, .mda, .mdb
• .mde, .mdt, .mdw, .mdz, .msc, .msi
• .msp, .mst, .nsh, .ops, .pcd, .pif
• .pl, .prf, .prg, .ps1, .reg, .rem
• .scf, .scr, .sct, .shb, .shs, .sys
• .url, .vb, .vbe, .vbs, .vsmacros, .vss
• .vst, .vsw, .ws, .wsc, .wsf, .wsh

If you have one of these, try zipping it inside a .zip archive—or better yet, upload it to Google Drive and share it that way.

? Browser or App Limitations

Sometimes the problem isn’t with the file itself but with how you're trying to send it.

• Try switching browsers (Chrome, Firefox, Edge)
• Make sure your browser is updated
• If you're using the Gmail app on mobile, try the web version instead
• Clear your browser cache or try incognito mode

Also, if you're using a third-party email client like Outlook or Thunderbird connected via IMAP/POP, some features—including file attachments—might not work as expected.

? Workarounds When You Can't Attach Directly

If your file is too big or unsupported, here are some solid alternatives:

• Upload the file to Google Drive and insert it as a link in Gmail
• Use a service like Dropbox or WeTransfer and paste the link
• Split large files into smaller ones if needed
• Convert files to PDF or another supported format if possible

Google Drive integration works smoothly with Gmail, so that’s usually the easiest path forward.

That’s basically it. Most attachment problems in Gmail come down to file size, type, or browser quirks. Once you rule those out, things should start working again.

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