# Companies using Mimecast

9,039 companies in our data use Mimecast, and 2,314 of them name it in job posts they wrote. Hiring for it is steady, with 1,262 job posts naming it from October 2025 to August 2026. IT teams are its most common home.

Data as of November 9, 2026. Source: Sumble.

## Which companies name Mimecast in the most job posts?

The companies with the most job posts naming Mimecast are Atlas Technica (459), ECI (109) and Brennan (69). Of the five companies in the table, Atlas Technica has the most employees who list it on their profiles: 22.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Atlas Technica](https://sumble.com/orgs/atlas-technica) | 459 | 22 | "Experience with Mimecast or other mail security gateway solutions such as IronPort or Proofpoint" (systems engineer, Nov 7, 2026) |
| [ECI](https://sumble.com/orgs/eci-2c07d14d) | 109 | 14 | "Implement SPF, DKIM, DMARC and email security solutions (ProofPoint, Mimecast)." (Senior Systems Escalation Engineer, Nov 4, 2026) |
| [Brennan](https://sumble.com/orgs/brennan-it) | 69 | 18 | "Mimecast and Check Point Harmony" (Security Operations Engineer, Oct 27, 2026) |
| [Air IT Group](https://sumble.com/orgs/air-it) | 68 | 15 | "Knowledge of Mimecast email security solutions." (field engineer, Oct 22, 2026) |
| [Alvarez & Marsal](https://sumble.com/orgs/alvarez-&-marsal) | 51 | 2 | "…VOIP connectivity troubleshooting, LAN connectivity troubleshooting, Mimecast, network printer support." (IT Field Services Support, Oct 27, 2026) |

## Is hiring for Mimecast growing?

Mimecast's share of job posts is about the same as three months earlier: 0.63 in every 10,000 job posts from June to August 2026, against 0.66 from March to May. Its busiest month was November 2025, at 0.80.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 102 | 1,413,673 | 0.72 |
| Nov 2025 | 145 | 1,822,119 | 0.80 |
| Dec 2025 | 57 | 1,236,103 | 0.46 |
| Jan 2026 | 124 | 1,828,002 | 0.68 |
| Feb 2026 | 127 | 1,856,647 | 0.68 |
| Mar 2026 | 118 | 1,850,711 | 0.64 |
| Apr 2026 | 107 | 1,728,886 | 0.62 |
| May 2026 | 130 | 1,821,509 | 0.71 |
| Jun 2026 | 130 | 1,909,496 | 0.68 |
| Jul 2026 | 107 | 1,815,180 | 0.59 |
| Aug 2026 | 115 | 1,835,698 | 0.63 |

## How many companies named Mimecast in a job post for the first time in recent months?

Mimecast showed up in job posts at 102 companies for the first time from June to August 2026, and 98 in the three months before. That brings the companies naming it for the first time since October 2025 to 375, through August 2026.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 98 |
| June to August 2026 | 102 |
| October 2025 to August 2026 | 375 |

Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.

## How do we know which companies use Mimecast?

2,314 companies name Mimecast in their own job posts. The other 6,725 show up because employees list it on their profiles. 673 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Mimecast | 2,314 | 26% |
| Employees' profiles list Mimecast | 6,725 | 74% |

## What size are the companies that use Mimecast?

The largest group of Mimecast users is companies with 50 to 999 employees (53%), more than on the typical tech page. The second-largest group is companies with 1,000 to 5,000 employees, at 19%.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 16% | 22% |
| 50 to 999 | 53% | 38% |
| 1,000 to 5,000 | 19% | 17% |
| Over 5,000 | 12% | 23% |

## Where are Mimecast companies based?

Beyond the United States (47%), Mimecast is unusually common in South Africa, at 5% of its companies. Its companies are based in 102 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 4,053 | 47% | 43% |
| United Kingdom | 2,021 | 23% | 6.4% |
| Australia | 533 | 6.1% | 2.2% |
| South Africa | 433 | 5% | 0.47% |
| Canada | 214 | 2.5% | 3.6% |
| India | 203 | 2.3% | 6.9% |

## Which teams work with Mimecast?

IT teams are by far the most common home for Mimecast, at 226 companies. Next come infrastructure teams (40 companies) and service desk teams (35).

| Team | Companies |
|---|---:|
| IT | 226 |
| Infrastructure | 40 |
| Service desk | 35 |
| SOC | 31 |
| Technology | 31 |
| Cybersecurity | 29 |

## Which roles mention Mimecast most?

Mimecast shows up across many roles. The top one, IT Support, has 26% of the job posts. IT Support posts naming it numbered 86 from March to May 2026 and 92 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| IT Support | 26% | 334 | 86 | 92 |
| Security Analyst | 11% | 133 | 35 | 37 |
| Security Engineer | 8% | 101 | 26 | 33 |
| Systems Engineer | 7.9% | 100 | 26 | 28 |
| Information Security Engineer | 3.8% | 48 | 18 | 12 |
| Infrastructure Engineer | 2.9% | 37 | 10 | 15 |

## Which companies started naming Mimecast in job posts recently?

125 companies with 50 or more employees started naming Mimecast in job posts between April and August 2026. 18 of them have more than 5,000 employees. NGL Energy Partners LP and SYNETIS lead the new commercial companies, with 5 job posts each from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [NGL Energy Partners LP](https://sumble.com/orgs/ngl-energy-partners) | 5 |
| Commercial | [SYNETIS](https://sumble.com/orgs/synetis) | 5 |
| Commercial | [SecurityHQ](https://sumble.com/orgs/securityhq) | 4 |
| Commercial | [Lewis Silkin](https://sumble.com/orgs/lewis-silkin) | 3 |
| Commercial | [WE Soda](https://sumble.com/orgs/we-soda) | 3 |
| Mid-market | [DISH Network Technologies](https://sumble.com/orgs/dish-network-technologies) | 3 |
| Mid-market | [Womble Bond Dickinson (UK) LLP](https://sumble.com/orgs/womble-bond-dickinson) | 2 |
| Mid-market | [Anaplan](https://sumble.com/orgs/anaplan) | 2 |
| Mid-market | [Success Academy Charter Schools](https://sumble.com/orgs/success-academy-charter-schools) | 2 |
| Mid-market | [Ardonagh Specialty](https://sumble.com/orgs/ardonagh-specialty) | 2 |
| Enterprise | [State Street](https://sumble.com/orgs/state-street) | 3 |
| Enterprise | [CGI](https://sumble.com/orgs/cgi) | 2 |
| Enterprise | [S&P Global](https://sumble.com/orgs/s&p-global) | 2 |
| Enterprise | [Mattel, Inc.](https://sumble.com/orgs/mattel) | 2 |
| Enterprise | [Harris Computer](https://sumble.com/orgs/harris-computer) | 2 |

Companies that named Mimecast in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.

## What else do Mimecast companies use?

Datto and Barracuda are the tools most closely tied to Mimecast. Next is KnowBe4: 7.2% of these companies use it, against 0.38% of similar ones.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Datto | 93 | 5% | 0.19% | 26 times |
| Barracuda | 112 | 6.1% | 0.3% | 20 times |
| KnowBe4 | 133 | 7.2% | 0.38% | 19 times |
| ConnectWise | 133 | 7.2% | 0.38% | 19 times |
| Proofpoint | 346 | 19% | 1% | 19 times |
| VMware Carbon Black | 123 | 6.7% | 0.48% | 14 times |
| Netskope | 151 | 8.2% | 0.62% | 13 times |
| Sophos | 225 | 12% | 0.92% | 13 times |

Shares are out of the 1,848 companies whose job posts name Mimecast, not counting firms whose job posts name almost every technology.

## Which project themes come up in Mimecast job posts?

After broad digital transformation work, teams hiring for Mimecast most often mention Cloud Cost Optimization, in 90 job posts. After that comes Cloud Migration, with 83.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 459 |
| Cloud Cost Optimization | 90 |
| Cloud Migration | 83 |
| Security Infrastructure Modernization | 70 |

## About this data

Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.

Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.

Sumble has a free plan, and the same data is available through its API and MCP server.

A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.

Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.