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KOSHER EMAIL

When your reader cannot open a link

Large parts of the religious and Haredi world use filtered devices. Browsing is blocked, apps are restricted, and the mail client is often the only channel that works. Every campaign built around a landing page fails silently for these readers.

What we do differently

  • The content travels inside the message, so nothing depends on the reader opening a browser
  • Attachments over 10MB: PDFs, flyers, forms and invoices, sent as real files
  • Images embedded in the message body rather than hosted on a page
  • SMS and OTP to kosher phones, through the same account and the same API
  • Sending that respects Shabbat and holidays, scheduled around them rather than through them
  • MailToJoin, so people can subscribe by sending an email instead of filling a web form

Why other platforms cannot do this

Most email platforms treat attachments as a spam signal and block them, and they host images externally so they can track opens. Both choices are reasonable for a normal audience and both break completely for a reader whose device will not fetch anything from the web. It is not a feature they forgot. It is a design decision that assumes the reader can browse.

Send to an audience nobody else reaches

Open a free account and try it, or tell us what you send and we will come back with a quote.

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Frequently asked questions

What is a kosher or filtered device?

A phone or computer configured, often at the network or SIM level, to block web browsing and most apps. Email and SMS usually still work, which makes them the only reliable channel.

How large can an attachment be?

Over 10MB, which is enough for a designed PDF flyer, a multi-page form or a set of images.

Can I send OTP codes to a kosher phone?

Yes, as transactional SMS through the API. This is a common use for banks, insurers and service providers that need to verify a customer who cannot receive a push notification.

What is MailToJoin?

A subscription method where a person joins a list by sending an email to a dedicated address, instead of filling a form on a website they cannot reach.