Free Email Client software with a free plan (October 2026)

3 of the 5 Email Client tools we track have a free plan. 1 of them also offer a free trial of a paid plan.

Free Email Client plans compared

Tool	Free plan limits	Upgrade from	Free trial	Prices checked
Canary MailCanary Mail Free	Limits not published	$3/moGrowth Yearly	No	Oct 12, 2026
Proton MailProton Free	1 GB storage, 1 email address, 25 MB attachments 1 GB storage (500 MB to start) 1 user, 1 encrypted email address End-to-end and zero-access encryption Unlimited messages per day, folders, labels, and filters	$4.99/moMail Plus	No	—
Spark MailFree	AI Assistant limited to 1 month of email history; 5 meeting notes (lifetime) Smart Inbox Unlimited Email Accounts Smart Notifications Essential Email Productivity	$10/moPlus	7 days	—

Tool

Free plan limits

Upgrade from

Free trial

Prices checked

Canary MailCanary Mail Free

Limits not published

$3/moGrowth Yearly

Oct 12, 2026

1 GB storage, 1 email address, 25 MB attachments

$4.99/moMail Plus

—

AI Assistant limited to 1 month of email history; 5 meeting notes (lifetime)

$10/moPlus

7 days

—

A tool is listed when one of its published plans costs 0. Limits and features come from the vendor's plan description as captured on the check date.
The upgrade price is the cheapest paid plan per month, in the vendor's currency. Free plan limits change often: confirm them on the vendor page before relying on them.