
Instantly.ai
Warmly
SmartLead.ai
lemlist
Reply.io
Flat-rate email warmup from $19/month: 5 mailboxes on Starter, 25 on Growth, no per-inbox fees. Builds real sender reputation for Gmail and Outlook so cold outreach lands in the inbox, not spam.

Compute various size metrics for a Git repository, flagging those that might cause problems - github/git-sizer

Which is more popular?
Based on our record, git-sizer seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | warmerly.com | github.com |
| Pricing | — | |
| Company | Startup from the United Kingdom · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Warmerly is an email warmup and deliverability platform for teams running cold outreach. It builds sender reputation on Gmail, Outlook and custom mailboxes by running continuous human-like warmup — threaded conversations with quoted replies, natural send delays, opens, stars and labels — against...
No description of git-sizer yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Warmerly and git-sizer.
Warmerly's answer
Built around agency workspaces, not a single sender identity Manages multiple client campaigns from one account without mixing contacts or messaging Multi-channel outreach across email and LinkedIn (via Unipile) in one workflow Built by an agency founder actively running outreach for real clients through Warmerly itself, not designed in the abstract
Warmerly's answer
Most outreach tools, including Instantly.ai and Warmly, are built for one person running their own outreach from one inbox. Agencies managing several client accounts get forced into workarounds: separate logins per client, or juggling multiple tools to keep campaigns from bleeding into each other. Warmerly is built specifically around that agency use case, with client workspaces as the default structure rather than something bolted on later.
Warmerly's answer
Small agencies running outreach campaigns on behalf of multiple clients, particularly agencies doing lead generation or business development work where they need to manage separate campaigns, contacts, and messaging for each client from one place.
Warmerly's answer
Warmerly started as an email warmup and deliverability tool, competing directly with Instantly.ai. While running it alongside Octelis, a Birmingham based digital marketing agency, the founder kept hitting the same problem from the inside: agencies running outreach for multiple clients need a way to separate campaigns cleanly, and existing tools weren't built for that. That reshaped Warmerly into a multi-channel outreach platform built around agency workspaces instead of a single sender.
Share your experience with using Warmerly and git-sizer. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Warmerly since Jul 2026.
Also there’s a cool project from GitHub you can use to help understand the size of git’s objects in your git repo https://github.com/github/git-sizer. This might help you determine what the best cloning strategy could be. Source: almost 5 years ago
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Build your own infinitely scalable cold email outreach system with Instantly.
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The prospecting tool to automate multichannel outreach & actually get replies.
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Reply.io is an AI-driven sales engagement platform that automates cold outreach through unlimited mailboxes, converts website traffic into booked meetings with AI Chat, and empowers your team to streamline the entire sales process with AI SDRs.
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