The corner of a small office: a plain desk against a window with a landline phone in its cradle, an empty chair pushed in, a mug and a potted fern, a coat on a hook by the door.

Contact

Who we are, and how to reach us.

SignSealer is operated by Mashdun LLC. Write to us and a person answers — there is no queue to get past.

Get in touch

Email: support@signsealer.com — support, billing, security, and anything about an agreement you have been sent.
Telephone: (866) 907-7446 — the same toll-free number our texts come from. Replying HELP to one of those texts reaches us too.
Mailing address: Mashdun LLC
188 Heritage Hills
Hohenwald, TN 38462
United States

Send us a message

A person reads these. If you would rather write from your own mail client, the address above is the same one.

We use what you write here to answer you, and for nothing else. What we do with it.

Already using SignSealer?

Open Support from inside your account. It opens a ticket with your business attached, so nobody has to ask you which account you mean, and you can read what you have already asked.

How texting works →

The company

The open wooden door of a small office on a street, a blank brass plate on the wall beside it, a bicycle against the railing of the steps.

SignSealer is a product of Mashdun LLC, 188 Heritage Hills, Hohenwald, TN 38462. The agreement between us is the terms of service; what we do with data is the privacy policy; and the text-message policy sets out what we send, from which number, and what STOP does.

A hand holding a phone showing a document and a signature, outside a timber lakeside cabin, with two guests walking to the door with luggage.

Ready when the next guest is.

Free for the first 25 agreements a month. No card to start.

Start free See it work