# Upstream vs Slashy Mail

The clearest difference is rating: Slashy Mail at 4.8 against Upstream's 3.7. Slashy Mail also leads on review sentiment (80% vs 50%) and update cadence (every 3 days vs every 2 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Slashy Mail holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews point the same way: 50% of Upstream's written reviews are positive against 80% of Slashy Mail's.

Upstream ships an update every 2 weeks, Slashy Mail every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Upstream | Slashy Mail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/upstream-email/id6751403722/reviews) | **[4.8 (12 ratings)](https://appshunter.io/ios/app/slashy-mail/id6759951027/reviews)** |
| Number of ratings | 3 | **12** |
| Positive reviews | 50.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Free | Free |
| Size | 87 MB | 66 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Upstream Labs](https://appshunter.io/developer/1834893204) | [Dhruv Roongta](https://appshunter.io/developer/1881890132) |

## What reviewers say

### Upstream

[App page](https://appshunter.io/ios/app/upstream-email/id6751403722)

This AI-powered inbox automatically organizes emails, drafts replies in your unique writing style, and sends follow-ups. It learns your workflow to minimize distractions and ensure no important messages are missed.

**Highlights:** AI email triaging, Personalized draft writing, Automated follow-ups, Self-organizing inbox, Learns user workflow

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Slashy Mail

[App page](https://appshunter.io/ios/app/slashy-mail/id6759951027)

A streamlined email client designed for Gmail users. It enables rapid inbox management, efficient searching, and quick replies. Features like reminders and scheduled sending help manage follow-ups effectively.

**Highlights:** Fast inbox triage, Quick search, Rapid replies, Compose with attachments, Reminders, Scheduled send

**Features:** iMessage stickers, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Upstream free?

Upstream is free to download, with no in-app purchases.

### Is Slashy Mail free?

Slashy Mail is free to download, with no in-app purchases.

### Which has better reviews, Upstream or Slashy Mail?

Slashy Mail is rated higher. Upstream averages 3.7 out of 5 from 3 ratings, while Slashy Mail averages 4.8 from 12 ratings.

### Do Upstream or Slashy Mail have ads?

Neither Upstream nor Slashy Mail shows ads.

### Which is updated more often, Upstream or Slashy Mail?

Upstream ships an update every 2 weeks, and Slashy Mail every 3 days. Most recently, Upstream was updated on October 24, 2026 and Slashy Mail on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*