A plain-text email is a message with no HTML — just text, no fonts, colors or images. A multipart email (multipart/alternative) bundles two versions of the same message, an HTML part and a plain-text part, so the recipient's app can show whichever it supports.
How plain-text and multipart work
When you send a well-built campaign, it travels as a multipart/alternative message: the email client displays the HTML version, and falls back to the plain-text part if HTML is unsupported, stripped, or the reader prefers text. Some email clients, smartwatches and accessibility tools use the text part directly. A plain-text-only email skips the HTML entirely — plain, fast, and personal.
Why plain-text and multipart matter
Including a genuine plain-text part improves deliverability: some spam filters penalize HTML-only mail and reward a matching text alternative, and it guarantees your message is readable everywhere. Plain-text emails also feel personal, which suits transactional and one-to-one messages. Mailpro generates the text part automatically. Read about plain-text email or build campaigns in the editor.
Mailpro and deliverability
Every email, readable everywhere
Mailpro sends multipart emails with an automatic plain-text version alongside your HTML — so your message renders on any client and stays on the right side of spam filters.