What attachment types are not supported?
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 |