Alternatives

Products that do what streakinbox does

Turn page visitors into customers

1
Superinbox▲531
Email vibing in your Gmail / Outlook
Oct 2025
2
Warmbox▲387
Warm-up your inbox and never land in spam
2021
3SC
Streak.com - Do sales, support and bug tracking all inside Gmail▲306
2012 · streak.com
4
Upstream▲977
The inbox designed for humans and agents
Jun 2026 · upstream.do
5
Streak 3▲208
The "low-work" CRM inside Gmail
2020
6
Inbox Zero▲821
Clean up your inbox in minutes, open source
2023 · getinboxzero.com
7
Email Warm-Up Tool by Reply▲325
Make sure your emails land in the inbox, not spam
2021
8
Gmail in the Gemini Era▲375
Ask your inbox anything to get summaries, drafts, & more
Jan 2026
9
Superflows▲476
AI assistant for email - get to inbox zero faster
2023
10
Pulse by EngageWith▲245
Get instant feedback from your team on Slack & MS Teams
2021
11
Streak▲363
CRM in your inbox - for Gmail
2014
12
Replybutton▲210
Get more email replies with embedded buttons and surveys
2019
13
ReplyBox▲87
A privacy-focused comment system
2023
14IB
InboxSDK by Streak (YC S11) – Build Apps inside Gmail▲176
2015 · inboxsdk.com
15
Visible AI Inbox▲173
Turn emails into portfolio insights with Visible AI Inbox
2024
16
Streak AI▲214
The CRM co-pilot for teams in Gmail
2023
17
Front (iOS)▲382
The easiest way to work with team inboxes (on your iPhone!)
2015
18
Nova Inbox▲182
Personalize emails in seconds, right from your inbox
2016
19
UnInbox: Spaces & Workflows▲251
Open source collaborative email platform to get shit done
2024
20
Meltbox▲21
Inbox for briefs from your agents. Better human in the loop.
Jul 2026 · meltbox.ai
21
Forms in Email▲206
Interactive forms in email that increase conversion by ~3X
2025
22
Streak Mail Merge for Gmail▲146
Send mass, personalized emails with automatic followups
2021
23
Inbox Autopilot by Dimension▲98
Your inbox, handled
Apr 2026 · dimension.dev
24OS
Open-Sourcing InboxSDK (YC S11) – Build Apps in Gmail▲257
Hi HN! We’re Aleem, Chris, Borys, Meichen and Zach from Streak (YC S11) and today we’re open sourcing our InboxSDK https://www.inboxsdk.com, which makes it easy to build apps for Gmail. Over 1.8B users spend their days in Gmail! Having your app built into the Gmail workflow is a better user experience and gives you great user retention. InboxSDK gives you a high-level, declarative API to insert your UI into Gmail without having to directly manipulate the DOM yourself. End users install a browser extension to use your app. The SDK can add UI to multiple areas of Gmail. For example,…
2022

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