What attachment types are not supported?

Learn which file attachment extensions you can’t send.

You can send any file attachment types except for those in the following list.

.adp	.app	.asp	.bas	.bat
.cer	.chm	.cmd	.com	.cpl
.crt	.csh	.der	.exe	.fxp
.gadget	.hlp	.hta	.inf	.ins
.isp	.its	.js	.jse	.ksh
.lib	.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
.pcd	.pif	.plg	.prf	.prg
.reg	.scf	.scr	.sct	.shb
.shs	.sys	.ps1	.ps1xml	.ps2
.ps2xml	.psc1	.psc2	.tmp	.url
.vb	.vbe	.vbs	.vps	.vsmacros
.vss	.vst	.vsw	.vxd	.ws
.wsc	.wsf	.wsh	.xnk