addy.io vs Sender

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

addy.io compared with Sender
Detail	addy.io	Sender
What it does	Free, open-source anonymous email forwarding	Email marketing platform for growing businesses
Stage	Not given	Established
Founded	Not given	2012
Based in	Not given	LT
Pricing model	freemium	freemium
Pricing	Free plan with unlimited standard aliases but limited features. Lite plan at $1/month (billed yearly) adds custom domains and additional usernames. Pro plan at $3/month (billed yearly) or $4/month (billed monthly) includes unlimited shared domain aliases and 20 custom domains. Family and Duo plans a	Not given
Key features	Browser extension for Firefox, Chrome, Edge, Safari Custom domain support Random alias generation Multiple recipients per alias Developer API for automation Tracking pixel blocking Rules and alias deactivation	Email automation workflows SMS marketing campaigns Landing page builder Segmentation and personalization Transactional emails via API and SMTP A/B testing Analytics and reporting Popup and signup forms
What makes it different	Completely free and open-source software Unlimited standard aliases on free plan Reply and send from aliases without revealing real email Easy alias management with deactivation instead of bounce Multiple app platforms including self-hosted options	Unified platform for email, SMS, and transactional messages
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	61 no change since last check	84 no change since last check
Trust Flow (Majestic)	31	43
Citation Flow (Majestic)	40	53
Referring domains (Majestic)	1456	10122

4 details filled in for both companies.

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