Dev tools · alternatives · 2026

24 alternatives to Nylas Pro

The extensible, open source mail app.

Nylas Pro is an open source email application for Mac that emphasizes extensibility. Built for developers and technical users who want customizable email functionality, it allows users to modify and extend the… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Nylas Pro launched in 2016; newer entries below may have overtaken it.

1
Nylas N1 Email App▲400
The extensible, open source mail client.
2015 · nylas.com · its alternatives →
2
Nylas Mail▲255
The most powerful and extensible email client
2017 · nylas.com · its alternatives →
3
Nylas - N1▲4
The extensible, open source mail client...
2015 · nylas.com · its alternatives →
4
MailSpring▲7
A fast and maintained fork of Nylas Mail
2017 · getmailspring.com · its alternatives →
5
Nylas Sync Engine▲73
Modern developer platform for email, contacts, & calendar
2015 · nylas.com · its alternatives →
6
Nylas▲6
Communications APIs for Developers
2019 · nylas.com · its alternatives →
7
Nylas CLI▲83
Email, calendar, and contacts for AI agents
May 2026 · cli.nylas.com · its alternatives →
8
Polymail▲1,567
A simple, beautiful, and powerful email client for Mac
2015 · polymail.io · its alternatives →
9
Polymail Pro▲597
The ultimate email productivity app for business 💌
2016 · polymail.io · its alternatives →
10
Mailbox for Mac (Beta)▲490
Fly through your email. Now on Mac
2014 · theverge.com · its alternatives →
11
Shootmail▲784
Notion like email builder & beautiful email templates
2024 · shootmail.app · its alternatives →
12
Taiga▲104
Mailbox theme for Nylas N1
2015 · noahbuscher.github.io · its alternatives →
13
Mimestream, a native macOS email client for Gmail▲403
A native macOS email client for Gmail
2020 · mimestream.com · its alternatives →
14
Mailbird for Mac▲373
Email the way you like it, now on Mac
2024 · getmailbird.com · its alternatives →
15
Swift Mail. Fastmail's modern mail standard delivered natively on macOS▲79
Hello HN! I'm excited to introduce Swift Mail, a native macOS email client purpose-built for the JMAP mail standard. Primarily constructed with SwiftUI and occasional AppKit elements, Swift Mail combines the speed and efficiency of a modern mail standard with desktop-centric features such as system notifications, keyboard shortcuts, quick look, multiple windows, state restoration, dark mode, and more. Swift Mail distinguishes itself from other email clients with its steadfast commitment to the JMAP standard over the traditional IMAP implementation, facilitating seamless alignment with modern…
2024 · swiftmail.io · its alternatives →
16
Nyro – Open-source AI assistant for your OS▲20
feedback and comments greatly appreciated!
2024 · github.com · its alternatives →
17
Canary Mail▲430
Discover Canary Mail, the best email client with AI-powered features and integrated calendar. Access multiple accounts, prioritize important emails, and boost productivity effortlessly.
2016 · canarymail.io · its alternatives →
18
Drag and Drop Email Editor by Vero▲148
Design beautiful emails, faster.
2020 · getvero.com · its alternatives →
19
new.email by Resend▲258
Build cross-platform emails using natural language.
2025 · resend.com · its alternatives →
20
Mail by Apple▲302
Apple's email client, unbundled 📧
2016 · apps.apple.com · its alternatives →
21
Stripo 2.0▲252
WYSIWYG editor for interactive AMP emails
2019 · stripo.email · its alternatives →
22
Mail Designer 365▲145
Create powerful, responsive email designs on your Mac
2017 · maildesigner365.com · its alternatives →
23
MailPile▲75
A fast, responsive open source email client
2014 · mailpile.is · its alternatives →
24
Comma▲151
A simple email newsletter reader for your phone
2016 · apps.apple.com · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →