Email Attachments - Frequently Asked Questions

What is the maximum attachment size?

20 MB. Attachments larger than 20 MB may not be sent or received.

What file types are blocked from being sent via email?

The following file types cannot be sent via email:

xlsm, docm, ade, adp, app, ani, asa, ashx, asmx, asp, bas, bat, cer, chm, class, cmd, cnt, com, config, cpl, crt, csh, der, dll, exe, fxp, gadget, hlp, hpj, ht, hta, htr, htw, ida, idc, idq, inf, ins, isp, its, job, js, jse, ksh, lnk, mad, maf, mag, mam, maq, mar, mas, mat, mau, mav, maw, mda, mdb, mde, mdt, mdw, mdz, msc, msh, msh1, msh2, mshxml, msh1xml, msh2xml, msi, msp, mst, ops, osd, pcd, pif, plg, prf, prg, printer, pst, reg, rem, scf, scr, sct, shb, shs, shtm, shtml, soap, stm, ps1, ps1xml, ps2, ps2xml, psc1, psc2, tmp, url, vb, vbe, vbp, vbs, vsmacros, vsw, ws, wsc, wsf, wsh, xnk

Why are these file types blocked?

These file types are commonly used to transmit computer viruses or other malicious programs.

Can I send Microsoft Office documents which contain macros?

No. Macro-enabled documents (.docm, .dotm, .xlsm, .xltm, .pptm, .potm, .pppsm, etc.) are routinely used to spread computer viruses and other malicious programs.

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