BillionMail is an open-source, self-hosted platform that combines a complete mail server with newsletter and email-marketing tooling in one dashboard. Teams that want to send and receive mail and run bulk campaigns from infrastructure they control, without per-subscriber fees, are the people it serves.[1]
Quick verdict
Small teams with basic server skills that send high volumes of mail benefit most from BillionMail: the mail server, mailboxes, and campaign stack arrive as one Docker deployment instead of three separate systems. That recommendation rests on its integrated Postfix, Dovecot, and Rspamd bundle plus batch campaign sending the vendor rates at 200,000 messages per hour. The material constraint is deliverability ownership: teams that cannot set up SPF, DKIM, and DMARC records or warm up a sending IP should choose a hosted provider instead. If you control a domain and a VPS and accept the warmup work, choose BillionMail; if you need guaranteed inbox placement from day one, choose Mailchimp.[1][2][3]
Key features
Complete mail server in one image Complete mail server in one image: Postfix, Dovecot, and Rspamd ship together, so sending, receiving, mailboxes, and spam filtering work without assembling separate components.[1]
One-command Docker deployment One-command Docker deployment: the vendor's single command brings up the console plus mail, database, Redis, and spam-filtering services, confirmed by an independent reviewer on a 2GB VPS.[1][2]
Visual campaign builder Visual campaign builder: drag-and-drop templates with images, buttons, and social blocks let operators compose newsletters without hand-coding HTML.[1]
Contact management and sync Contact management and sync: import contacts from files or synchronize them through the API, with list segmentation and subscription handling for targeted sends.[1]
High-volume batch sending High-volume batch sending: campaign throughput is vendor-rated at 200,000 messages per hour, and an independent test send completed without throttling.[1][2]
Real-time delivery tracking Real-time delivery tracking: opens, clicks, bounces, and unsubscribes report per campaign, giving operators the feedback loop bulk sending needs.[1]
Per-domain dedicated IPs Per-domain dedicated IPs: assign sending IPs per domain so one brand's reputation does not contaminate another's deliverability.[1]
Scheduled sending and domain tooling Scheduled sending and domain tooling: queue campaigns for off-peak windows and verify SPF, DKIM, and DMARC setup from the console.[1][2]
Who will love it
High-volume senders escaping per-subscriber pricing: newsletters and notification mail at scale cost infrastructure only, since the AGPL-3.0 core charges no license or subscriber fees.[1]
Teams wanting mail server plus marketing in one place: operators who maintain Postfix or Dovecot separately from a campaign tool consolidate inbound mail, mailboxes, and bulk sending onto one console.[1][2]
Privacy-minded operators and resellers: self-hosting keeps contact data on owned infrastructure, and V2 agent features with data isolation suit small hosting resellers.[1]
Who should avoid it
Teams needing inbox placement from day one: new IPs need SPF, DKIM, DMARC, and gradual warmup, work that hosted providers absorb and BillionMail hands to the operator.[1][2]
Non-technical marketers without server help: Docker hosts, DNS records, bounces, and IP reputation need operational skill, and advanced documentation is sparse.[1][2]
Teams needing built-in automation journeys: native drip sequences and advanced segmentation are roadmap items, so verify current releases before committing.[1]
Alternatives and compatibility
Mailchimp is the incumbent in the published catalogue relationship and the natural comparison for teams weighing self-hosted sending against managed deliverability.[1][2]
Mailchimp fits teams that want managed deliverability and native automation without server work, while BillionMail fits operators who accept warmup labor for infrastructure-cost sending.[1][2]
Migration between the two is manual work across contacts, templates, DNS authentication, and sending reputation; the campaign builder covers composition, not full provider state.[1]
Questions worth asking
What is the best BillionMail alternative for non-technical users?
Is BillionMail really no-code?
How much does BillionMail cost per month?
The software license costs nothing: the core is free forever under AGPL-3.0 with no subscriber fees, and the vendor states email sending itself is free. Budget instead for a VPS (an independent test setup used a server around $12 per month), a domain, and optionally dedicated IPs; paid email-verification credits start at $1.90 per 1,000. Checked October 9, 2026.[1][2]
Sources and editorial review
Source research. Reviewed on October 9, 2026. Reviewed by Sanjib Sah. Written by Sanjib Sah. AI assisted; reviewed by a human editor.
We have not run or tested this product.
- BillionMail official homepage
official · Observed October 9, 2026
Official homepage: mailserver-plus-marketing scope, Docker one-command deploy, feature list, V1/V2 comparison, free/AGPL positioning.
- BillionMail email marketing page (official)
official · Observed October 9, 2026
Official email-marketing page: campaign workflow, templates, tracking, dedicated IPs, batch sending, deliverability setup obligations.
- Martechsignal BillionMail in-depth review
published measurement · Observed October 9, 2026 · Published September 1, 2026
Independent desk review with test environment: overall 4.2/5 with setup 5/5; confirms deploy, throughput test, VPS cost, warmup and docs caveats.
- BillionMail GitHub repository (vendor-published locator)
official · Observed October 9, 2026
Vendor repository locator and license identity from catalogue record; page read timed out so no README claims are cited from it.