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Bandwidth vs Maddy

A side-by-side editorial comparison of Bandwidth and Maddy — release velocity, themes, recent moves, and the top alternatives to consider.

Bandwidth vs Maddy: at a glance

FeatureBandwidthMaddy
SectorCommsComms
Velocity score6.30.0
Sparks · 30d00
Top themesvoip, communications-api, rcs, branded-callingmail-server, self-hosted, golang, zero-downtime-reload
Last editorial update12d ago1mo ago
WebsiteVisit →Visit →

What is Bandwidth?

Bandwidth ships Identity Presentation (branded calling) in beta — trust layer for enterprise outbound calling.

Bandwidth is an enterprise communications API provider actively shipping across messaging, voice, and number management. The last 30 days include SIP trunking on Build, 10DLC registration in the app UI, RCS test number self-serve, and voice debug logs in Voice Insights. Identity Presentation — authenticated branded calling that displays the caller's brand name, logo, and call reason on mobile phones — entered beta on August 14 and is the most differentiated new capability.

Read the full Bandwidth trajectory →

What is Maddy?

A one-binary mail server learning to behave like production infrastructure.

maddy is an all-in-one SMTP and IMAP server written in Go, aimed at people who want a working mail host without assembling Postfix, Dovecot and a policy daemon themselves. The 0.9 line moved quickly — 0.9.0 through 0.9.5 between late March and late May — with the sequence following a recognisable shape: a feature release, an immediate patch for a broken integration, a security release, then cleanup. Configuration is directive-based, and much of the changelog concerns the behaviour of individual modules like auth.ldap, check.rspamd and check.dnsbl.

Read the full Maddy trajectory →

Bandwidth vs Maddy: editorial side-by-side

B6.3

Bandwidth ships Identity Presentation (branded calling) in beta — trust layer for enterprise outbound calling.

◆ Current state

Bandwidth is an enterprise communications API provider actively shipping across messaging, voice, and number management. The last 30 days include SIP trunking on Build, 10DLC registration in the app UI, RCS test number self-serve, and voice debug logs in Voice Insights. Identity Presentation — authenticated branded calling that displays the caller's brand name, logo, and call reason on mobile phones — entered beta on August 14 and is the most differentiated new capability.

◆ Where it's heading

The platform is advancing on two simultaneous tracks: developer experience (self-serve tooling replacing support tickets, debug visibility, UI for previously API-only workflows) and differentiated enterprise capabilities (branded calling, RCS agent testing, MOS voice quality monitoring). The Brazil PSTN replacement expansion shows the geographic build-out is ongoing. Each release reduces friction at a specific operator task.

◆ Prediction

Identity Presentation moving from beta to general availability is the most likely near-term announcement. RCS expansion to additional carriers or geographies is the second active investment, given the self-serve test number tooling that just shipped.

M
Maddy
COMMS
0.0

A one-binary mail server learning to behave like production infrastructure.

◆ Current state

maddy is an all-in-one SMTP and IMAP server written in Go, aimed at people who want a working mail host without assembling Postfix, Dovecot and a policy daemon themselves. The 0.9 line moved quickly — 0.9.0 through 0.9.5 between late March and late May — with the sequence following a recognisable shape: a feature release, an immediate patch for a broken integration, a security release, then cleanup. Configuration is directive-based, and much of the changelog concerns the behaviour of individual modules like auth.ldap, check.rspamd and check.dnsbl.

◆ Where it's heading

The project is systematically removing the compromises that made early versions convenient. Obsolete SASL LOGIN was disabled by default, the STARTTLS plaintext fallback was dropped, the maddyctl symlink behaviour and the implicit run command were deleted after four years of deprecation warnings, and libdns providers that have not kept up with 1.x are being cut. Running the other way is operational maturity: no-downtime config reload, queue-length metrics, OpenMetrics fixes, systemd readiness reporting, and SLSA build attestations on release artifacts. This is a project moving from hobbyist-friendly to operator-friendly, and accepting breakage to get there.

◆ Prediction

0.10.0 is already scoped by the deprecations announced in 0.9.1 — expect the flagged libdns providers to be removed and gandi to require Bearer tokens. Given the 0.9.x pattern, a feature release followed quickly by an integration fix is the likely shape.

Alternatives to Bandwidth and Maddy

Other Comms products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Bandwidth or Maddy.

See all Bandwidth alternatives → · See all Maddy alternatives →

Recent activity from Bandwidth and Maddy

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 15d agoBandwidthSIP Trunking is live on Bandwidth Build
  2. 16d agoBandwidth10DLC Registration Center – UI Access
  3. 20d agoBandwidthSecure your off-net Lumen numbers with a port-out PIN
  4. 23d agoBandwidthRCS Registration Center – Test Number Management
  5. 1mo agoBandwidthIdentity Presentation – Beta
  6. 1mo agoBandwidthVoice API debug logs — now available in Voice Insights
  7. 3mo agoMaddymaddy 0.9.5 fixes nested pipeline logging and systemd reload reporting
  8. 4mo agoMaddymaddy 0.9.4 removes the maddyctl symlink and implicit run command
  9. 5mo agoMaddymaddy 0.9.3 patches an LDAP injection flaw in auth.ldap
  10. 5mo agoMaddymaddy 0.9.2 fixes an rspamd panic on unspecified tls_client
  11. 5mo agoMaddymaddy 0.9.1 flags libdns providers for removal in 0.10.0
  12. 5mo agoMaddymaddy 0.9.0 adds no-downtime configuration reloading

Frequently asked questions

What is the difference between Bandwidth and Maddy?

They serve adjacent needs but don't currently overlap on shipped themes. Bandwidth is currently shipping more aggressively (velocity 6.3 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Bandwidth better than Maddy?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Bandwidth is currently shipping more aggressively (velocity 6.3 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.

What are the best alternatives to Bandwidth?

Top Bandwidth alternatives in Comms are ranked by recent ship velocity. Browse the "Bandwidth alternatives" section above for the current picks, or visit /alternatives/bandwidth for the full list with editorial commentary on each.

What are the best alternatives to Maddy?

Top Maddy alternatives in Comms are ranked by recent ship velocity. Browse the "Maddy alternatives" section above for the current picks, or visit /alternatives/maddy for the full list with editorial commentary on each.