We forward emails with attachments for up to 10MB per email (including message and attached files) and up to 50MB for our premium members.

We refuse some attachments for security reasons. The list is basically the same as the other main email providers.

Here are the extensions that are not allowed on ImprovMX:

  • .ade

  • .adp

  • .bat

  • .chm

  • .cmd

  • .com

  • .cpl

  • .dll

  • .exe

  • .hta

  • .ins

  • .isp

  • .jar

  • .jse

  • .lib

  • .lnk

  • .mde

  • .msc

  • .msi

  • .msp

  • .mst

  • .nsh

  • .pif

  • .scr

  • .sct

  • .shb

  • .sys

  • .vb

  • .vbe

  • .vbs

  • .vxd

  • .wsc

  • .wsf

  • .wsh


Still have questions?

If you have any other queries please get in touch with our support team.

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