Mail deliverability test

Send an email to this address, from the address you actually mail from:

    arg3vt24as32@mailtest.jeffreyvis.nl

Then read the report:

    curl arg3vt24as32.mailtest.jeffreyvis.nl
    https://tools.jeffreyvis.nl/mailtest/arg3vt24as32/

The address accepts one message and expires in 60 minutes. Subject and
content are up to you - write what you would normally send.