United States · Series C startup

Who invested in MailFrontier

2 rounds we have observed, with the 4 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Funding summaryUpdated 26 Oct 2026

$12Mraised across 2 rounds since 2003, from 2 sources

$10MSeries B$1.5MSeries C
Latest round
Series C, $1.5MJan 2006
Biggest round
$10MSeries B · Aug 2003
Investors
4
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

200420052006
$10MSeries B$1.5MSeries C
First round
Series B, $10M
Aug 2003
Biggest round
$10M
Series B · Aug 2003
Between rounds
2.4 years
from the last two

The rounds

  1. Jan 2006
    Series C$1.5M1 new2 returning

    From a historical funding record

  2. Aug 2003
    Series B$10M3 new

    From a historical funding record

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

The exit

ExitBuyerPriceWhen
AcquiredSonicWALLundisclosedFeb 2008

From historical deal records. Wrong? Tell us.

Everyone who backed them

Menlo VenturesVC firm2rounds
DFJVC firm1round
Draper Fisher Jurvetson (DFJ)Investment firm1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about MailFrontier

Who invested in MailFrontier?

MailFrontier's investors include New Enterprise Associates, Menlo Ventures, DFJ and Draper Fisher Jurvetson (DFJ).

How much has MailFrontier raised?

MailFrontier has raised $12M across 2 rounds since 2003.

When did MailFrontier last raise?

MailFrontier's most recent round was a Series C of $1.5M in Jan 2006.

What was MailFrontier's biggest round?

MailFrontier's largest round on record is $10M (Series B), in Aug 2003.

Who backed MailFrontier first?

MailFrontier's first round on record, in Aug 2003, was backed by New Enterprise Associates, Menlo Ventures and Draper Fisher Jurvetson (DFJ).

What stage is MailFrontier at?

MailFrontier's latest named round is a Series C, in Jan 2006.

Where is MailFrontier based?

MailFrontier is based in the United States.

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